SSC CHSL Previous Paper 32 (Held On: 21 Oct 2020 Shift 2) (Previous Year Paper)

The correct answer is 'Pnemonia'.

Key Points

• The correct spelling is 'Pneumonia' which is a serious illness affecting one or both lungs that makes breathing difficult.
• E.g. He died from bronchial pneumonia. 
  

Additional Information

• Let's know the meanings of other words:
• Deviation- the act of moving away from what is normal or acceptable.
• Miscellaneous- consisting of many different kinds of things that are not connected and do not easily form a group.
• Preamble- an introduction to a book or a written document.

The correct answer is 'invalid'.

Key Points

• Invalid as a noun means "​a person who needs other people to take care of them, because of illness that they have had for a long time".
• E.g. She had been a delicate child and her parents had treated her as an invalid.
• From the meaning and example that are given above, 'invalid' is the correct answer.
  

Additional Information

• Let's look at the meanings of other words:
• Athlete- a person who competes in sports.
• Activist- ​a person who works to achieve political or social change, especially as a member of an organization with particular aims.
• Petitioner- a person who organizes or signs a petition.

The correct answer is 'disperse'.

Key Points

• The given sentence means that the police used tear gas to move apart the crowd.
• Tear gas is commonly used by law enforcement to control riots and crowds.(दंगों और भीड़ को नियंत्रित करने के लिए आमतौर पर कानून प्रवर्तन द्वारा आंसू गैस का उपयोग किया जाता है।)
• Let's look at the meanings of the given words:
• Attack- to use violence to try to hurt or kill somebody.(किसी को चोट पहुँचाने या मारने की कोशिश करने के लिए हिंसा का इस्तेमाल करना।)
• Disburse- to pay money to somebody from a large amount that has been collected for a purpose.(किसी उद्देश्य के लिए एकत्र की गई बड़ी राशि से किसी को धन देना।)
• Collect- to bring things together from different people or places.(विभिन्न लोगों या स्थानों से चीजों को एक साथ लाने के लिए।)
• Disperse- To make somebody move apart or go in different directions.(किसी को अलग करना या अलग-अलग दिशाओं में जाना।)
• From the meanings given, 'disperse' is the grammatically and conceptually correct word for the blank.
  

So, the complete sentence is- *The police used tear gas to disperse the crowd.(*भीड़ को तितर-बितर करने के लिए पुलिस ने आंसू गैस के गोले छोड़े।)

The correct answer is 'To believe only part of something'.

Key Points

• Take something with a pinch of salt means "to not completely believe something that you are told because you think it is unlikely to be true".
• E.g.  You should take everything she says with a pinch of salt because she tends to exaggerate.
• According to the meaning and example that are given above, 'to believe only part of something' is the correct meaning of the given idiom.
  

Additional Information

• Similar idioms:
• Cast doubt on- to cause people to feel uncertainty about something.
• E.g. New evidence has cast doubt on the guilty verdict.
• Smell a rat- begin to suspect trickery or deception.
• E.g. When I got an e-mail asking for my password, I should have smelled a rat.
• Take with a grain of salt- to understand that something is not completely true or right.
• E.g. This newspaper is not reliable. Take whatever it publishes with a grain of salt.

The correct answer is 'begin to'.

Key Points

• Let us refer to this line from the passage, "But the mere thought of (3)_ on occasions like these would throw her (4)_ such a nervous state that a tiny muscle in the corner of her left eye would (5) twitch."
• The word before the blank No 5 is 'would' which is a modal.
• Modals are followed by V1.
• Only option 3 has v1 i.e begin.
• So, 'begin to' is the correct option for blank No 5.

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Additional Information

• Characteristics of modals:
• Modals are auxiliary verbs which are used to express certainty, possibility, willingness, obligation, ability, etc.
• Modals never change their form i.e. we can't use 's/es/ing/ed' with them.
• Modals are followed by bare infinitive i.e v1 without to.

The correct answer is 'into'.

Key Points

• 'Throw into' is a phrasal verb which means "To suddenly or forcefully put someone or something into a particular condition, position, or situation".
• E.g. The explosion threw the crowd into chaos.
• Let us refer to this line from the passage, "But the mere thought of (3)_ on occasions like these would throw her (4)_ such a nervous state".
• From the above sentence, we get to know that Ms Foster is put into a nervous state by the thought of being late.
• So, 'into' is the correct word for blank No 4.

The correct answer is 'being late'.

Key Points

• The passage talks about the fear of Ms Foster about missing a train, flight, etc.
• 'Being' is a gerund and a gerund is a word that acts like a noun and looks like a verb.
• E.g. I like being nice to people.
• 'Late' means "arriving, happening or done after the expected, arranged or usual time".
• Now, let us refer to this line from the passage, " But the mere thought of (3)_ on occasions like these".
• From the above sentence, we get to know that Ms Foster gets afraid at the thought of getting late on some specific occasions.
• 'Being late' in option 1 means 'getting late'.
• So, 'being late' is the correct option for blank No 3.

The correct answer is 'particularly'.

Key Points

• Let's refer to this line from the passage, "In other respects, she was not a (2)_ nervous woman."
• The word after the blank is 'nervous' which is an adjective.
• Therefore, we need an adverb to qualify the adjective 'nervous'.
• Out of the given options, only 'particularly' is an adverb.
• So, 'Particularly' is the correct word for the blank No. 2.
  

Alternate Method

• 'Particularly' is an adverb which means 'very or very much'.
• ​E.g. I don't particularly care what happens to him.
• Let's refer to this line from the passage, "In other respects, she was not a (2)_ nervous woman."
• Form the above sentence, we get to know that Ms Foster is not a very nervous woman in general.
• So, 'particularly' is the correct word for the blank No. 2.
  

Additional Information

• Let's know the meanings of other words:
• Usual is an adjective which means "that happens or is done most of the time or in most cases".
• General is an adjective which means "affecting all or most people, places or things".
• Particular is an adjective which means "used to emphasize that you are referring to one individual person, thing or type of thing and not others".

The correct answer is 'even'.

Key Points

• The given passage talks about the fear of Ms Foster.
• 'Even' is an adverb which is used to emphasize something unexpected or surprising.
• E.g. He didn't even call to say he wasn't coming.
• The above-mentioned sentence is emphasizing the fact that he didn't call.
• Let refer to this line from the passage, "All her life Ms Foster had a great fear of missing a train, a plane, a boat, or (1)_ a theatre curtain."
• The given sentence talks about the fear of missing a theatre curtain which is quite surprising and unexpected.
• According to the meaning and example that are given above, 'even' is the correct word for blank No 1.
  

Additional Information

• Let's know about the other options:
• Hardly is an adverb which means "almost none".
• Extremely is an adverb which means "to a very high degree".
• Quite is an adverb which means "to some degree".

The correct answer is 'avid'.

Key Points

• The given sentence means that Ritu reads a lot of books. It means that she is very enthusiastic about reading books.
• Now, let's know the meanings of the given words-
• Irritated (नाराज़ करना)- annoyed or angry.
• Avid (अत्‍युत्साही)- very enthusiastic about something (often a hobby).
• Inattentive (लापरवाह)- not paying attention to something/somebody.
• Erratic (अनियत)- ​not happening at regular times.
• According to the meanings given above, 'avid' is the correct word for the blank.
  

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So, the complete sentence is- Ritu is an avid reader. I always find her with a book.

The correct answer is 'has been'.

Key Points

• The usage of 'being' is wrong in the given sentence.
• The given sentence is in the present perfect continuous tense and 'has been' is used in the present perfect continuous tense.
• E.g. Girish has been working in this company for two years.
• According to the rule and example that are given above, 'has been' will be used in the underlined part of the sentence.
  

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Correct Sentence: For the last two years Shweta has been diligently working with Rohingya refugees to create colourful table mats using their local weaving techniques.

Additional Information

• The present perfect continuous tense shows that something started in the past and is continuing at the present time.
• The present perfect continuous is formed using the construction "has/have been + v1 + ing + for/ since + time".
• E.g. we have been living in this house since 2007.
• Usage of 'since' and 'for':
• Since is used for a point of time. 
• Since Monday, since, 2002, since, last year.
• For is used for a period of time.
• For the last two years, for the last 3 weeks

The correct answer is 'DBCA'.

Key Points

• Sentence D is independent of any other sentence as it is giving some general information about the film 'Wayfarers'. Hence, 'D' is the first sentence.
• 'Lakua and his wife' mentioned in sentence B refer to the phrase 'a poor couple' in sentence D. Hence, 'B' follows 'D'.
• The phrase 'the latter burdened with a paralytic husband' mentioned in the sentence C refers to 'Nathuni' in sentence B. Hence, 'C' follows 'B'.
• The adverb 'finally' indicates that 'A' is the last sentence.
  

Important Points

• Important Rules to Solve the Para Jumbles:
• Read the sentences attentively and try to comprehend the idea or theme of the paragraph and eliminate the irrelevant options.
• Try to identify the opening (independent sentence) and closing sentences of the paragraph (concluding sentence).
• Try to identify the mandatory pairs. Two sentences can be connected through various connectors and other determinants. Identify the pronouns connecting the sentences with each other.

The correct answer is 'few time left'.

Key Points

• The usage of 'few' is wrong with the word 'time'.
• 'Time' is an uncountable noun.
• 'Few' is a quantifier which means 'some; not many' and is used with countable nouns.
• E.g. Few people understand this problem.
• 'Little' is a quantifier which means 'some' and is used with uncountable nouns.
• E.g. They had little money to spend.
• According to the rule and the examples given above, 'little' will be used instead of 'few' in the given sentence.
  

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Correct Sentence: You must make a choice immediately because there is little time left.

Additional Information

• Uncountable nouns are the nouns which cannot be counted. 
• E.g. Equipment, time, hair, furniture, scenery, information, work, etc.
• Uncountable nouns cannot be made plural by adding an 's' at the end.

The correct answer is 'Biennial'. 

Key Points

• Biennial means "happening once every two years". (द्विवाषिक)
• E.g. a biennial convention.
• According to the meaning and example that are given above, 'biennial' is the correct answer.
  

Additional Information

• Let's know the meanings of other words:
• Biannual- happening twice a year. (साल में दो बार)
• Centennial- ​the 100th anniversary of an event. (शताब्दी)
• Triennial- happening every three years. (

The correct answer is 'Unproductive'.

Key Points

• The word 'Prolific' means "producing many works, etc."
• E.g. one of the most prolific periods in her career.
• The word 'Unproductive' means "not producing very much; not producing good results".
• E.g. I've had a very unproductive day.
• According to the meanings of the words and the examples given above, 'unproductive' is the correct antonym of the word 'prolific'.

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Additional Information

• Let's know the meanings of other words:
• Abundant- existing in large quantities; more than enough.
• Several- ​more than two but not very many.
• Rich- containing or providing a large supply of something.

The correct answer is 'alumni occupy'.

Key Points

• The given sentence is in the present indefinite tense. Therefore, option 2 gets eliminated.
• 'Alumnus' means "a former male student of a school, college or university".
• E.g. Imran has received numerous job offers because he’s an alumnus of an elite medical school.
• 'Alumni' means "​the former male and female students of a school, college or university".
• E.g. Several of the class of 1992 alumni donated money to their classmate’s account when he became ill last winter.
• The given sentence is not talking about a single student as is clear from 'leading positions in different areas'.
• Therefore, we cannot use 'alumnus'.
• According to the rule and examples that are given above, 'alumni occupy' will be used in the underlined part of the given sentence.
  

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Correct Sentence: The Delhi Birla International School alumni occupy leading positions in different areas of profession and service.

Additional Information

• Present Indefinite Tense represents an action which is regular or normal or true and uses the base form of the verb.
• In the present indefinite tense 's/es' is used with the base form of the verb if the subject is "third-person singular".
• E.g. My father goes for a walk daily.

The correct answer is 'Merely loud and angry words but ineffective'.

Key Points

• Full of sound and fury- loud and angry words that attract a lot of attention but do nothing useful.
• E.g. The town meeting created lots of sound and fury, but no resolution.
• According to the meaning and example given above, 'merely loud and angry words but ineffective' is the correct meaning of the idiom 'full of sound and fury'.

The correct answer is 'CBAD'.

Key Points

• Sentence C is independent of any other sentence and introducing the subject 'Bahadur Shah Jafar' for the first time. Hence, 'C' is the first sentence.
• Hence, options 1 and 3 get eliminated.
• Sentence D cannot be the second sentence as the word 'finally' used in the sentence indicates that it must be the last sentence.
• Hence, option 4 also gets eliminated.
• Therefore, 'CBAD' is the correct sequence.

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Important Points

• Important Rules to Solve the Para Jumbles:
• Read the sentences attentively and try to comprehend the idea or theme of the paragraph and eliminate the irrelevant options.
• Try to identify the opening (independent sentence) and closing sentences of the paragraph (concluding sentence) .
• Try to identify the mandatory pairs. Two sentences can be connected through various connectors and other determinants. Identify the pronouns connecting the sentences with each other.

The correct answer is 'The first-ever ‘All India Folk Dance Festival’ was organised by Chhattisgarh in January 2020.'

Key Points

• We need to follow these instructions while changing the voice of an 'Assertive sentence'.
• Find the subject and object of the sentence and exchange their places; make changes in their cases as well if subject and object are pronouns.
• Use preposition by before agent. (Chhattisgarh)
• Use helping verb in passive form according to the tense of active form. (Past indefinite - was/ were)
• Always use the third form of the main verb in passive form.
• At last line up the remaining part.
  

Following these steps, we finally get- The first-ever ‘All India Folk Dance Festival’ was organised by the Chhattisgarh State in January 2020.

 

Additional Information

 

• Assertive sentence- The sentence which declares or asserts a statement, feeling, opinion, incident, event, history, or anything is called an assertive sentence.
• E.g. Virat Kohli is the best player in the Indian cricket team.

The correct answer is 'Lineage'.

Key Points

• The word 'Pedigree' means "the parents, grandparents, etc. of an animal that are all of the same breed".
• E.g. Dogs with good pedigrees.
• The word 'Lineage' means "the series of families that somebody comes from originally". 
• E.g. The royal history traces the lineage of the kings to the ancient Buddhist monarchs of India.
• According to the meanings of words and the examples that are given above, 'lineage' is the correct synonym of the word 'pedigree'.
  

Additional Information

• Let's know the meanings of other words:
• Forbidden- not allowed.
• Illegitimate- not allowed by a particular set of rules or by law.
• Pediment- the part in the shape of a triangle above the entrance of a building in the ancient Greek style.

The correct answer is 'which are type of Madhya Pradesh’s village culture'.

Key Points

• The error lies in the wrong omission of the article 'a' in the given sentence.
• The indefinite article 'a/an' is used when we refer to a single entity out of many of similar kind or to refer to a thing in general.
• E.g. I need a laptop.
• In the above-mentioned sentence, we are referring to a laptop in general. It can be any laptop out of many laptops.
• There may be many types of village cultures in Madhya Pradesh and the sentence given in the question is referring to one out of many types which is not a specific type.
• According to the rule and example that are given above, the article 'a' will be used before the word 'type' in the given sentence.
  

Correct Sentence: Subhash Gidwani is selling dolls, which are a type of Madhya Pradesh’s village culture, at the Annual Dastakar Bazaar, held in January every year in Delhi.

Additional Information

• 'Which' is a relative pronoun.
• A relative pronoun is a word that introduces a dependent (or relative) clause and connects it to an independent clause.
• E.g. His best movie, which won several awards, was about the life of Gandhi.

The correct answer is 'Compatible'.

Key Points

• ​The word 'Congenial' means "pleasant to spend time with because their interests and character are similar to your own".
• E.g. a congenial colleague.
• The word 'Compatible' means "if two people are compatible, they can have a good relationship because they have similar ideas, interests, etc."
• E.g. She found a compatible partner through a computer dating agency.
• According to the meanings of the words and examples given above, 'compatible' is the correct synonym of the word 'congenial'.

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Additional Information

• Let's know the meanings of the other words:
• Bombastic- sounding important but having little meaning and used to impress people.
• Aloof- not friendly or interested in other people.
• Servile- wanting too much to please somebody and obey them.

The correct answer is 'The foreigner asked the farmer if he could tell him the way to the nearest hotel.'.

Key Points

• While changing the narration of an interrogative sentence, we need to follow the given steps-
• The conjunction ‘if’ should be used in place of a comma (,) and inverted commas (“ ”).
• 'Question mark (?)' is changed to full stop (.).
• ‘Said to’ will be changed into ‘asked’.
• 'Can' is changed to 'could'.
• 2nd person (you) is changed into he and 1st person (me) is changed into him i.e.according to the object (farmer) and the subject (foreigner) of the reporting verb respectively.
  

The final sentence- The foreigner asked the farmer if he could tell him the way to the nearest hotel.

Additional Information

• A conjunction is not used in the sentence of wh-family words (what, where, who, whom, why, etc.).
• E.g. He said to her, "What are you doing these days?"

                            He asked her what she was doing those days.

• Change of modals:
• Can- could
• Will- would
• May- might

The correct answer is 'Warmonger'.

Key Points

• The word 'Pacifist' means '​holding or showing the belief that war and violence are always wrong'.
• E.g. The pacifist was rewarded by his college for being a peacekeeper.
• The word 'Warmonger' means "a person, especially a politician or a leader, who wants to start a war or encourages people to start a war".
• E.g. He is a terrifying warmonger who loves to blow things up.
• ​According to the meanings of the words and examples given above, 'warmonger' is the correct antonym of the word 'pacifist'.
  

Additional Information

• Let's know the meanings of other words-  
• Orator- a person who makes formal speeches in public or is good at public speaking.
• Peacemaker- a person who tries to persuade people or countries to stop arguing or fighting and to make peace.
• Nihilist- a person who believes in nihilism.

The correct answer is 'Conscentious'. 

Key Points

• The correct spelling is 'Conscientious' which means 'taking care to do things carefully and correctly'.
• Let's know the meanings of other words-
• Expanse- a wide and open area of something, especially land or water.
• Resultant- caused by the thing that has just been mentioned.
• Constraint- a thing that limits something, or limits your freedom to do something.

Additional Information

• Words similar to Conscientious:
• Conscience- the part of your mind that tells you whether your actions are right or wrong.
• Conscious- aware of something; noticing something.

When the paper is unfolded it will appear like :-

So, answer is the given figure below

Hence, the correct answer is "Option (1)".

Given figure :

Triangles :

ABC ABD ABE ABF ABG ABH ABI

ACD ACE ACF ACG ACH ACI ADE 

ADF ADG ADH ADI AEF AEG AEH 

AEI AFG AFH AFI AGH AGI AHI

So, 28 triangles are in the given figure.

Hence, the correct answer is "28".

First let's count the sections of given triangle and then add them, then that is the number of triangles.

 

Lines originating from the top vertex are dividing the triangle in 7 parts. And naming the parts as 1, 2 ,3, 4, 5, 6 and 7.

Then adding these parts separately we get,

Number of triangles = 1 + 2 + 3 + 4 + 5 + 6 + 7 = 28

According to the given information we have to check the options one by one :

Option 1) D A B X A D A B X D D A B X X D A B X X 

Option 2) D A B X X D A B X X D A B X X D A B X X 

Option 3) D A B X X D A B X C D B B X X D A B A X 

Option 4) D A B X D D A B X A D D B A X D A B D X 

Option (2) is giving a pattern of dabxxdabxxdabxxdabxx.

No other option is giving any particular pattern.

Hence, the correct answer is "xxxaxx".

Interchanging the value of A,

40 A 2 A 3 A 4 A 15 

Using BODMAS rules,

Option 1 → ÷, ×, =, -

40 ÷ 2 × 3 = 4 - 15

20 × 3 = - 11

60 ≠ -11

Option 2 → ÷, ×, =, ×

40 ÷ 2 × 3 = 4 × 15  

20 × 3 = 60

60 = 60

Option 3 → ×, ÷, +, =

40 × 2 ÷ 3 + 4 = 15 

40 × 0.67 + 4 = 15

26.8 + 4 = 15

30.8 ≠ 15

Option 4 → ×, =, -, ÷

40 × 2 = 3 - 4 ÷ 15

80 ≠ 3 - 0.26 

80 ≠ 2.76

Hence, the correct answer is "÷, ×, =, ×".

The logic follows here is :- Each letter is increased by 2 and we get next letter.

Similarly,

Hence, "RQNKEG" is the correct answer.

The logic follows here is :

Similarly,

Hence, the correct answer is "FUPNFS".

Given:

The rate of onion increased from Rs. 70 per kilogram to Rs. 120 per kilogram

Concept Used:

Concept of percentage. It is calculated on the basis of 100.

For example, x% means x out of 100

Calculation:

Initial price Rs. 70 per kg

Final price Rs. 120 per kg

Price increased by (120 - 70) = Rs. 50

Price increased in percentage (50/70) × 100

⇒ 71.42 ≈ 71.5%

∴ The rate of onion was increased by 71.5%

Dirham and USD both are currencies of their country.

The Venn diagram will be :

Hence, the correct answer is "Option (4)".

Additional Information

Dirham is the currency of UAE (United Arab Emirates).

USD (United States Dollar) is the currency of USA (United States of America).

The logic follows here is :

(Sum of numbers at the base) - Number at the top = Number in the middle

For figure A :

(14 + 18) - 8 = 32 - 8 = 24.

For figure B :

(2 + 8) - 2 = 10 - 2 = 8.

Similarly,

For figure C :

(12 + 10) - 4 = 22 - 4 = 18.

Hence, the correct answer is "18".

The logic follows here is :

Similarly,

Hence, the correct answer is "PPZF".

Family chart :

Family Tree :

From the family tree, we can conclude that-

I is the Father of the Boy.

Hence, the correct answer is "Father".

The logic follows here is :

Hence, the correct answer is "1045".

The given figure can be observed in the following :

Hence, the correct answer is "Option (3)".

The logic follows here is :

I. 676 = 26²

II. 216 = 6³

III. 125 = 5³

IV. 729 = 9³

All numbers are perfect cubes except 676 which is a perfect square.

Thus, 676 is the odd one of the given set of numbers.

Hence, the correct answer is "676".

The least possible Venn diagram for the given statements will be :

Conclusions :

I. No mall is a heartz → True (All malls are kings but no king is a heartz implying no mall is a heartz either).

II. All kings are malls → False (It is possible but not definite. Hence, it is false).

Hence, the correct answer is "Only conclusion I follows".

In the First Dice and Second dice, 

Letter C is common.

The left letter will be opposite to each other writing them clock-wise starting from B.

 

Option 1 → E is opposite to A, not C.

Option 2 → We left with the only F who is opposite to C.

Option 3 → B is opposite to D, not C.

Option 4 → A is opposite to E, not C.

Hence, the correct answer is "F".

Additional Information

• Dices are of two types :

1. Standard Dice
2. Non-Standard Dice.

• Dice has:-

1. faces = 6
2. sides = 12
3. corners = 8

• Two opposite faces never seen together.
• Adjacent faces are never opposite to each other.

The logic follows here is:

Second is the S.I unit of time.

Similarly,

Meter is the S.I unit of length.

Hence, the correct answer is "Meter". 

Additional Information

• There is a total of 9 S.I units.

1. 7 of them are fundamental units.
2. 2 of them are Supplementary units.

 

The logic follows here is:

Second number = (First number + 1)²

25 = (4 + 1)²

25 = 5²

25 = 25

Option 1 → 12 : 120

120 = (12 + 1)²

120 = 13²

120 ≠ 169

Option 2 → 11 : 170

170 = (11 + 1)²

170 = 12²

170 ≠ 144

Option 3 → 6 : 36

36 = (6 + 1)²

36 = 7²

36 ≠ 49

Option 4 → 6 : 49

49 = (6 + 1)²

49 = 7²

49 = 49

Hence, the correct answer is "Option 4".

From the diagram given below.:

The shaded part represents persons who use both a bicycle and a bike but not a car is = 34

Hence, the correct answer is "34".

The logic follows here is:

3 letters of the cluster follow the same pattern as the same number is added and subtracted from the letter.   

Option 1 → 

Option 2 → 

Option 3 → 

Option 4 → 

Thus we can see NOPE doesn't follow the pattern of the same number in addition and subtraction.

Hence, the correct answer is "NOPE".

The Correct mirror image of the given figure when the mirror is placed on the right is:

Hence, the correct answer is "Option 3".

Additional Information

In a mirror image Left changes to right and the right changes to left vice-versa.

When placement of mirror not given, By default we will assume it in Vertical direction.

The Letter adjacent to the mirror after the mirror image will adjacent to it just with the left change to right and right change to left vice-versa.

The starting letter of the word will be at last after the mirror image drawn with left changes to right and right changes to left.

The logic follows here is:

80 = 12² - 8²

80 = 144 - 64

80 = 80

220 = 16² - 6²

220 = 256 - 36

220 = 220

Similarly,

? = 25² - 20²

? = 625 - 400

? = 225

Hence, the correct answer is "225".

The logic follows here is:

Arrangement of words in a meaningful and ascending order: (As per the mean distance from the Sun).

The correct sequence will be:

4. Mercury
5. Venus
6. Earth
7. Mars
8. Jupiter
9. Saturn

Hence, the correct answer is "4, 5, 1, 6, 3, 2".

The logic follows here is:

Except for Istanbul rest, all are the capital of a country.

 

Hence, the correct answer is "Istanbul". 

Additional Information

• In September 2016, India inked a direct deal with the French government to purchase 36 new Rafale fighter jets in a 7.87 billion euro deal.
• India will also get the latest weapons like the Meteor and Scalp missiles as part of the contract, besides a five-year support package that assures high availability of the fighter. India will pay a 15% advance and deliveries are to start in three years.
• Rafale is a twin-engine medium multi-role combat aircraft, manufactured by the French company Dassault Aviation.
• The Tower of London, officially Her Majesty's Royal Palace and Fortress of the Tower of London is a historic castle on the north bank of the River Thames in central London. It is a cultural World Heritage site.
• Maputo is the capital and largest city of Mozambique. It is known as the City of Acacias, in reference to acacia trees commonly found along its avenues, and the Pearl of the Indian Ocean.

The pattern follows here is:

Similarly,

Hence, the correct answer is "GHSD".

Given:

Total people = 150

Average age of men = 50 years

Formula used:

Average = Sum of values/Number of values

Calculation:

Total men in the group = (2/5) × 150 = 60

Total women in the group = (1/3) × 150 = 50

Total children in the group = 150 – 60 – 50 = 40

Average age of men = 50 (given)

Average age of women = (4/5) × 50 = 40

Average age of children = (1/5) × 50 = 10

Now, Total age of men in the group = 60 × 50 = 3000

Total age of women in the group = 50 × 40 = 2000

Total age of children in the group = 40 × 10 = 400Total age of all persons in the group = 3000 + 2000 + 400 = 5400

Average age of persons in the group = 5400/150 = 36

∴ The average age of all the people in the group is 36

Formula used:

A = P(1 + RT/100)

A → Amount

P → Principal

R → Rate 

T → Time

Calculation:

A sum at simple interest becomes two times in 8 years

⇒ 2P = P(1 + 8R/100)

⇒ R = 100/8

⇒ R = 12.5

∴ The rate of interest is 12.5%

The time in which the same sum  will be 4 times

⇒ 4P = P(1 + 12.5 × T)/100

⇒ 300 = 12.5T

⇒ T = 24 

∴ The sum  will be 4 times in 24 years

Given:

T = 24% and R = 12%

Calculation:

Percentage difference between the number of students in school T and R = 24% – 12% = 12%

The difference between the central angles corresponding to schools T and R = (12/100) × 360° = (6/5) × 36 = 43.2°

∴ The difference between the central angles corresponding to schools T and R is 43.2°.

Given:

sin(A – B) = 1/2

Calculation:

We know that

sin 30° = 1/2

sin(A – B) = sin 30° 

⇒ A – B = 30°      ----(i)

Also, cos(A + B) = 1/2

cos 60° = 1/2

cos(A + B) = cos 60° 

⇒ A + B = 60°      ----(ii)

Adding (i) and (ii) 

2A = 90° 

⇒ A = 45° 

∴ The value of A is 45°

Given:

a + b = 2

a3 + b3 = 62

Formula used:

(a + b)³ = a3 + b3 + 3ab(a + b)

Calculation:

a + b = 2

Cubing the given equation

(a + b)³ = 2³

⇒ a³ + b³ + 3ab(a + b) = 8

⇒ 62 + 3ab  (2) = 8  

⇒ 6ab = 8 – 62

⇒ 6ab = -54

⇒ ab = -54/6 = -9

∴ The value of ab is -9.

Given:

Area of three adjacent faces of a cuboid are 30 cm2, 20 cm2, and 24 cm2

Formula used:

Area of rectangle = length × breadth

Volume of cuboid = length × breadth × height

Calculation:

Area of three adjacent faces of cuboid are lb, bh, lh

where l →  Length of cuboid

b → Breadth of cuboid

h → Height of cuboid

According to question,

lb = 30, bh = 20, lh = 24

Now, lb/bh = 30/20

⇒ l/h = 3/2

⇒ l = (3/2) × h      ----(i)

lh = 24      ----(ii)

Putting value of l from (i) in (ii)

(3/2) × h × h = 24

⇒ h² = 16 

⇒ h = 4 cm

l = (3/2) × 4 = 6 cm

b = 30/6 = 5 cm

Volume of cuboid = lbh = 6 × 5 × 4 = 120 cm³.

∴ Volume of cuboid is 120 cm3.

Shortcut Tricklb = 30; bh = 20; lh = 24

(lbh)² = 30 × 20 × 24

so the volume of cuboid = lbh = 120 cm³

Given:

A number, when divided by 14, leaves a remainder of 9

Calculation:

Suppose the number is = 14 + 9 = 23

Now, the square of the number is divided by 14

⇒ 23²/14 = 529

⇒ 529/14 leaves a remainder is 11

∴ The remainder will be 11.

Given:

∠BAC = 90°

BD = 4 cm

CD = 5 cm

Concept used:

In ΔABC, Right angle at B

AD is perpendicular to BC, then

AD² = BD × DC

Calculation:

According to property

AD2 = BD × DC

⇒ AD² = 4 × 5

⇒ AD = √20

⇒ AD = 2√5 cm

∴ The AD is 2√5 cm.

Given:

Selling Price = Rs. 1350

Calculation:

Let the cost price of one ball be x

Now selling 26 balls for Rs. 1,350, there is a loss equal to the cost price of eight balls

Cost price of 26 balls = 26x, loss = 8x(8 balls)

Loss = Cost Price – Selling Price

⇒ 8x = 26x – 1350

⇒ 18x = 1350

⇒ x = 75 

∴ The cost price of a ball is Rs.75

Given:

Distance = 950 km

Time = 19 hours

Formula used:

Speed = Distance/Time

Calculation:

Speed of car = 950/19 = 50 km/hr

Speed of train = (220/100) × 50 = 110 km/hr

Now, distance covered by train in 3.5 hrs

Distance = 110 × 3.5 = 385 km

∴ The correct answer is option (2).

Given:

Radius of circle = 13 cm

AB = 10 cm

Formula used:

The formula of Pythagoras, for right-angled triangle,

Hypotenuse2 = perpendicular2 + base2

Concept used:

Perpendicular from the center of the circle to a chord bisects the chord.

Calculation:

AB = 10 cm

In ΔOAX

⇒ OA² = AX² + OX²

⇒ (13)² = (AB/2)² + OX2

⇒ OX² = (13)² - (5)²

⇒ OX² = 169 - 25

⇒ OX = 12 cm

Similarly, XM = 12 cm

OX = OX + XM 

⇒ 12 + 12

⇒ 24 cm

∴ The distance between centre is 24 cm.

Concept used:

Follow BODMAS rule to solve this question, as per the order given below, 

(33/40) + (1/5)[(4/5) – (1/5)(7/8 – 5/4)]

⇒ 33/40 + (1/5)[(4/5) – (1/5){(7 – 10)/8}]

⇒ 33/40 + (1/5)[4/5 + 3/40]

⇒ 33/40 + (1/5) × 35/40

⇒ 40/40 = 1

∴ The value of $\frac{{33}}{{40}} + \frac{1}{5}\left[ {\frac{4}{5} - \frac{1}{5} \times \left( {\frac{7}{8} - \frac{5}{4}} \right)} \right]$ is 1.

Calculation:

Let the cost price of the article be Rs.100

Then, the marked price of the article = 100 × (125/100) = Rs.125

Discount of 10% given on marked price 

Selling price of the article = 125 × (90/100) = Rs.112.5

Profit percentage = (SP – CP/CP) × 100 

∴ Profit percentage = {(112.5 – 100)/100} × 100 = 12.5%

Shortcut TrickP = M - D - (M × D)/100

P = 25 - 10 - (25 × 10)/100

P = 12.5%

Given:

$\frac{{secθ + tanθ }}{{secθ - tanθ }} = 5$

Concept used:

secθ = Hypotenuse/Base, tanθ = perpendicular/base, cosθ = base/hypotenuse

Pythgorus theorem

Hypotenuse² = Perpendicular² + Base²

Calculation:

Let Perpendicular = P, Base = B, Hypotenuse = H

$\frac{{secθ + tanθ }}{{secθ - tanθ }} = 5$

⇒ {(H/B) + (P/B)}/{(H/B) - (P/B)} = 5/1

⇒ (H + P)/(H - P) = 5/1

⇒ H + P = 5      ----(1)

⇒ H - P = 1      ----(2)

Solve (1) and (2)

⇒ H = 3, P = 2

Hypotenuse2 = Perpendicular2 + Base2

⇒ Base = √5

$\frac{{3{{\cos }^2}\theta + 1}}{{3{{\cos }^2}\theta - 1}}$

⇒ {3 × (√5/3)² + 1}/{3 × (√5/3)2 - 1}

⇒ (8/3)/(2/3)

⇒ 4

∴ The value is 4.

Calculation:

sin(θ + 30°) = 3/√12

⇒ sin(θ + 30°) = 3/2√3      ----(√12 = 2√3)

⇒ sin(θ + 30°) = (3/2√3) × (√3/√3)

⇒ sin(θ + 30°) = (3/2√3) × (√3/√3)

⇒ sin(θ + 30°) = √3/2

⇒ sin(θ + 30°) = sin 60° 

⇒ (θ + 30°) = 60° 

⇒ θ = 30° 

The value of θ is equal to 30°

Calculation:

Time taken by P to fill the tank = 15 minutes

P's 1 minute work = 1/15 

Time taken by Q to fill the tank = 30 minutes

Q's 1 minute work = 1/30

Now, they are opened at alternate minutes

In 2 minutes = 1/15 + 1/30 = 3/30 = 1/10 tank is filled 

Time taken to completely fill the tank = 2 × 10 = 20 minutes

Calculation:

$\frac{{\sqrt {1 + x} + \sqrt {1 - x} }}{{\sqrt {1 + x} - \sqrt {1 - x} }}$ × $\frac{{\sqrt {1 + x} + \sqrt {1 - x} }}{{\sqrt {1 + x} + \sqrt {1 - x} }}$

⇒ $(1 + x) + (1 – x) + 2√(1 – x^2) \over(1 + x) – (1 – x)$

⇒ $2 + 2√(1 – (√3/2)^2)\over2x$

⇒ $2 + 2 × (1/2)\over 2 × (√3/2)$

⇒ (3/√3) × (√3/√3)  

⇒ √3

Calculation:

Let the tank be filled in x minutes

For half the time D alone fill the tank

D's 1 minute work = 1/20

For 1st half = (x/2) × (1/20) = x/40

For second half C and D together work

C and D working together = (1/15 + 1/20) = 7/60

For second half = (x/2) × (7/60) = 7x/120

Total work is completed 

⇒ x/40 + 7x/120 = 1

⇒ 10x/120 = 1

⇒ x = 12

∴ The tank will be filled in 12 minutes

Given:

A circle is inscribed in a Quadrilateral ABCD

AB = 6.5 cm, BC = 5.4 cm, CD = 5.3 cm

Concept used:

The length of two tangents drawn from the external point is equal.

Calculation:

AP = AS, BP = BQ, CR = CQ, DR = DS

⇒ (AP + PB) + (DR + RC) = (BQ + QC) + (AS + DS)

⇒ AB + CD = AD + BC

⇒ 6.5 + 5.3 = AD + 5.4

⇒ 11.8 = AD + 5.4

⇒ AD = 11.8 - 5.4 

⇒ 6.4 cm

∴ The AD is 6.4 cm.

Given:

A is twice as good as B

Time is taken to finish work = 22 days

Calculation:

A is twice as good as B

A can complete the given work in half time of B

Suppose B can complete work in 2x days

Then, A can complete the work in 2x/2 = x days

According to the question.

⇒ (1/x) + (1/2x) = 1/22

⇒ (1 + 2)/2x = 1/22

⇒ 3/2x = 1/22

⇒ x = 33 days

∴ A alone can finish the given work in 33 days

Shortcut Trick

For third proportional of a and b, use formula: c = b² ÷ a

Given: a = 16, b = 24

Third Proportional = (24 × 24) ÷ 16

Third Proportional = 576 ÷ 16 = 36

∴ The correct option is D.

Alternate Method

Given:

First term (a) = 16

Second term (b) = 24

Formula used:

If a, b, and x are in continued proportion, then a : b = b : x ⇒ x = b² ÷ a

16 Term 1 (a)

× 1.5

24 Term 2 (b)

× 1.5

36 Third Prop (x)

Logic: 16 : 24 :: 24 : x

Calculations:

⇒ Let the third proportional be x.

⇒ 16 : 24 :: 24 : x

⇒ 16 ÷ 24 = 24 ÷ x

⇒ 16 × x = 24 × 24

⇒ x = 576 ÷ 16

⇒ x = 36

∴ The correct option is D.

Additional Information

Mean Proportional

For any two numbers a and b, the mean proportional is calculated as √(a × b).

Fourth Proportional

If four numbers a, b, c, and d are in proportion (a:b = c:d), then the fourth proportional d = (b × c) ÷ a.

Continued Proportion

Three numbers a, b, and c are in continued proportion if the ratio of the first to the second is the same as the ratio of the second to the third (a/b = b/c).

BCD forms a straight line i.e 180° 

⇒ ∠BCA = 180° – 132° = 48° 

Now, Sum of all angles of a triangle is equal to 180° 

⇒ ∠B + ∠C + ∠A = 180° 

⇒ (4/7) × ∠A + ∠A = 180° – 48° 

⇒ (11/7) × ∠A = 132° 

⇒ ∠A = 84°         

∴ The measure of ∠A is  equal to 84°

Given:

√x = √3 – √ 5

Calculation:

Squaring both sides

(√x)² = (√3 – √5)²

⇒ x = 3 + 5 – 2√15 

⇒ x – 8 = -2√15

Again, squaring both sides

(x – 8)² = (-2√15)²

⇒ x² + 64 – 16x = 4 × 15

⇒ x² + 4 – 16x = 0

⇒ x² – 16x + 6 = 2  

∴ The value is 2.

Total number of students in school R = (12/100) × 10,500 = 1,260

Total number of students in school Q and T = {(16 + 24)/100} × 10,500 = 4200

⇒ Required percentage = (1260/4200) × 100 = 30%

∴ The number of students in school R is 30% of the total number of students in schools Q and T together

Percentage of students in school R = 12%

Percentage of students in school Q and T = 16% + 24% = 40%

∴ Required percentage = (12/40) × 100 = 30%

Calculation:

Let the cost price of one eraser be Rs.x

The number of erasers bought by the person in Rs.2 be y 

Expenditure = Price × consumption

⇒ 2 = x × y     ----(i)

The price of an eraser is reduced by 25%, a person can buy three more erasers for Rs.2

⇒ 2 = (75x / 100) × (y + 3)      ----(ii)

Equating (i) and (ii)

⇒ xy = (3x / 4) × (y + 3)

⇒ 4y = 3y + 9

⇒ y = 9

∴ The total number of erasers that can be bought for the original price is 9.

The correct answer is 1952.

Key Points

• In the year 1952, the first Elected Parliament with two houses come into being in India.
• The first general elections under the new Constitution were held during the year 1951-52.
• The first elected Parliament came into existence in April 1952.
• The Seventeenth Lok Sabha was held in May 2019.

Additional Information

• Indian Parliament is the supreme legislative body of India.
• The Indian Parliament comprises of the President and the two Houses -
• Rajya Sabha
• Lok Sabha
• Lok Sabha:
• 543 members are directly elected by citizens of India on the basis of universal adult franchise representing Parliamentary constituencies across the country.
• It has a term of five years.
• Rajya Sabha:
• Rajya Sabha or the upper house is a permanent body not subject to dissolution.
• One-third of the members retire every second year and are replaced by newly elected members.
• Each member is elected for a term of six years.
• Session of Parliament :
• The period during which the House meets to conduct its business is called a session.
• The Constitution empowers the President to summon each House at such intervals that there should not be more than a six-month gap between the two sessions.
• The President has the power to summon and prorogue either House of Parliament or to dissolve Lok Sabha.
• The Constitution of India came into force on January 26, 1950.

The correct answer is Norway.

Key Points

• Norway country ranked first in the 2019 Human Development India Index. 
• HDI is part of the Human Development Report that is published by the United Nations Development Programme (UNDP).
• India was ranked 129 out of 189 countries on the 2019 Human Development Index (HDI) improving from the 130th position in 2018.
• The other indices that form the part of the 2019 Report are:
• Inequality-adjusted Human Development Index (IHDI),
• Gender Development Index (GDI),
• Gender Inequality Index (GII) and
• Multidimensional Poverty Index (MPI).
• The focus of the 2019 Report is on ‘Inequality in Human Development’.

​

Additional Information

• HDI emphasizes that people and their capabilities should be the ultimate criteria for assessing the development of a country, not economic growth alone.
• HDI measures the average achievement of a country in three basic dimensions of human development:
• A long and healthy life,
• Access to knowledge, and
• A decent standard of living
• Top Performers in 2019 :
• Norway, Switzerland, Ireland occupied the top three positions in that order.
• Germany is placed fourth along with Hong Kong, and Australia secured the fifth rank on the global ranking.
• India’s Performance :
• India’s HDI value increased by 50% (from 0.431 to 0.647), which places it above the average for other South Asian countries (0.642).
• In India, between 1990 and 2018, life expectancy at birth increased by 11.6 years, mean years of schooling increased by 3.5 years, and expected years of schooling increased by 4.7 years. Per capita incomes rose by over 250%.

The correct answer is Six.

Key Points

• Six Vedangas are there in total. 
• The Vedanga are six auxiliary disciplines of Hinduism that developed in ancient times and have been connected with the study of the Vedas.
• They are as follows:
• Shiksha (Phonetics)
• Kalpa (Ritual Canon)
• Vyakaran (Grammar)
• Nirukta (explanation)
• Chhanda (Vedic meter)
• Jyotisha (Astrology)

Additional Information

• Shiksha :
• This auxiliary discipline has focused on the letters of the Sanskrit alphabet, accent, quantity, stress, melody, and rules of euphonic combination of words during a Vedic recitation.
• Chandas :
• This auxiliary discipline has focused on the poetic meters, including those based on a fixed number of syllables per verse, and those based on a fixed number of morae perverse.
• Vyakarana :
• This auxiliary discipline has focused on the rules of grammar and linguistic analysis to establish the exact form of words and sentences to properly express ideas.
• Nirukta :
• This auxiliary discipline has focused on linguistic analysis to help establish the proper meaning of the words, given the context they are used in.
• Kalpa  :
• This field focused on standardizing procedures for Vedic rituals, rites of passage rituals associated with major life events such as a birth, wedding, and death in the family, as well as discussing the personal conduct and proper duties of an individual in different stages of his life.
• Jyotisha :
• This auxiliary Vedic discipline focused on time keeping.

The correct answer is Norman Joseph Woodland.

Key Points

• The first Barcode system was developed by Norman Joseph Woodland.
• The barcode was invented by Norman Joseph Woodland and Bernard Silver and patented in the US in 1951.
• The invention was based on Morse code that was extended to thin and thick bars.
• Barcode contains information about a product like-
• price & weight of the product, date of manufacturing and expiry, name of the manufacturer.
• Barcode is allocated by an international institution set up for this purpose.
• Every product has a unique barcode all over the world.

Additional Information

• On June 26, 1974, the UPC barcode was used for the first time in Troy, Ohio, at Marsh Supermarket.
• The first product that was scanned with the new barcode was a pack of Wrigley's Juicy Fruit chewing gum.
• The choice of a pack of gum as the first product to be scanned wasn't just by chance.
• A barcode scanner will read this pattern of black and white bars and translate them into a line of test that your retail point of sale system can understand.
• Barcodes are applied to products as a means of quick identification.
• They are used in retail stores as part of the purchase process, in warehouses to track inventory, and on invoices to assist in accounting, among many other uses.

The correct answer is Dhebar Lake in Rajasthan.

Key Points

• Dhebar Lake in Rajasthan is the second largest artificial lake in Asia.
• Dhebar Lake is India's second-largest artificial lake, after Govind Ballabh Pant Sagar.
• It is located in the Udaipur District of Rajasthan State in western India.
• Jaisamand Lake is also known by the name of Dhebar Lake.
• Dhebar Lake, built by Maharana Jai Singh in 1685, covers an area of 36 square miles.

Additional Information

• Chandubi Lake in Assam :
• Chandubi Lake is a natural lake located in Rabha Hasong Autonomous Council, Kamrup District, Assam at a distance of 64 kilometers.
• From the city of Guwahati accessible through National Highway 37.
• The lake is located at the foot of Garo hills surrounded by Assam and Meghalaya.
• Chilika Lake in Odisha :
• Chilika is the largest brackish water estuarine Lake in Asia.
• It sprawls over an area of 1100 sq km.
• Covering parts of three districts of Odisha i.e Puri on the East, Khurda on the North, and Ganjam on the South.
• It is the largest coastal lagoon in India and the second largest lagoon in the World.
• The Lake is a highly productive ecosystem, with rich fishery resources.
• Kolleru Lake in Andhra Pradesh :
• Kolleru Lake is one of the largest freshwater lakes in India located in the state of Andhra Pradesh.
• It forms the largest shallow freshwater lake in Asia, 15 kilometers away from the Eluru and 65km from Rajamahendravaram.
• it is located between Krishna and Godavari deltas.

The correct answer is Safety pin.

Key Points

• The safety pin was invented by Walter Hunt.
• American mechanic Walter Hunt is regarded as the inventor of the safety pin.
• The safety pin included a clasp that covered the point and kept it from opening and a circular twist at the bend to act as a spring and hold it in place.
• The safety pin was invented while Hunt was twisting a piece of wire and trying to think of something that would help him pay off a debt of fifteen dollars.
• It was the first pin to have a clasp and spring action and Hunt claimed
• it was designed to keep fingers safe from injury, hence the name.

Additional Information

• Scooter :
• The concept of the scooter stretches back at least a century before to 1817 and Baron Karl von Drais de Sauerbrun of Germany.
• Safety Lamp :
• The Davy lamp is a safety lamp for use in flammable atmospheres, invented in 1815 by Sir Humphry Davy.
• It consists of a wick lamp with the flame enclosed inside a mesh screen.

The correct answer is Arabic word.

Key Points

• The term ‘monsoon’ is derived from an Arabic word.
• The word 'monsoon' is known to have been derived from the Arabic word 'mausim', meaning season.
• The term was reportedly first used in English in British India and refers to the seasonal change in the direction of the prevailing winds of a region.
• Basically, it describes a seasonal wind shift over a region that is usually accompanied by a dramatic increase in precipitation.
• Many of us are familiar with the Indian-Asian monsoon that brings heavy rains during the summer months over widespread areas of India and SE Asia.

Additional Information

• June 1 is regarded as the date of onset of the monsoon in India
• as indicated by the arrival of the monsoon in the southernmost state of Kerala.
• The monsoon accounts for nearly 80% of the rainfall in India.
• The rainfall is a result of the convergence of wind flow from the Bay of Bengal and reverses winds from the South China Sea.
• The onset of the monsoon occurs over the Bay of Bengal in May, arriving at the Indian Peninsula by June, and then the winds move towards the South China Sea.
• Monsoon Formed :
• The primary cause of monsoons is the difference between annual temperature trends over land and sea.
• The apparent position of the Sun with reference to the Earth oscillates from the Tropic of Cancer to the Tropic of Capricorn.
• Thus the low-pressure region created by solar heating also changes latitude.

The correct answer is Nandini Harinath.

Key Points

• Nandini Harinath is one of the Deputy Operations Director of the Mars Orbiter Mission (MOM).
• Nandini Harinath is a rocket scientist at ISRO’s Satellite Centre in Bengaluru.
• She is a part of the Mars Orbiter Mission, Maangalyaan.
• She has co-authored a research paper on mission planning, analysis, and operations—Outline of key components.
• Nandini is also the Mission system leader of NISAR which is a joint NASA-ISRO satellite that is to be developed to launch in 2020.

Additional Information

• Mars Orbiter Mission:
• The Mars Orbiter Mission, also called Mangalyaan, is a space probe orbiting Mars since 24 September 2014.
• It was launched on 5 November 2013 by the Indian Space Research Organisation.
• It was the fourth space agency to reach Mars, after Roscosmos, NASA, and the European Space Agency.
• It made India the first Asian nation to reach Martian orbit and the first nation in the world to do so on its maiden attempt.
• Mars Orbiter Mission (MOM), the maiden interplanetary mission of ISRO, launched on November 5, 2013, by PSLV-C25 and it got inserted into Martian orbit on September 24, 2014, in its first attempt.
• 1000 Earth days corresponds to 973.24 Mars Sols (Martian Solar day) and MOM completed 388 orbits.

The correct answer is Frequency of the sound.

Key Points

• Frequency of the sound characteristics of sound is measured in hertz (Hz). 
• When sound travels through air, the atmospheric pressure varies periodically.
• The number of pressure variations per second is called the frequency of sound,
• Sound wave frequencies can be measured with a frequency counter or with a spectrum analyzer.
• These devices work by using a microphone to convert the sound wave into an electrical signal.
• The peaks and valleys of the wave are counted to find the frequency.

Additional Information

• The intensity of the sound :
• Sound intensity, also known as acoustic intensity, is defined as the power carried by sound waves per unit area in a direction perpendicular to that area.
• The SI unit of intensity, which includes sound intensity, is the watt per square meter (W/m²).
• Sound intensity is not the same physical quantity as sound pressure.
• The loudness of the sound :
• Loudness refers to how loud or soft a sound seems to a listener.
• The loudness of sound is determined, in turn, by the intensity of the sound waves.
• Intensity is a measure of the amount of energy in sound waves.
• The unit of intensity is the decibel (dB).
• The wavelength of the sound :
• The wavelength of a sound, therefore, is the distance between adjacent identical parts of a sound wave.
• Just as the distance between adjacent crests in a transverse wave is one wavelength.
• the distance between adjacent compressions in a sound wave is also one wavelength,

The correct answer is Andhra Pradesh.

Key Points

• The Tropic of Cancer does NOT pass through Andhra Pradesh. 
• Tropic of Cancer passes through the middle part of India.
• Tropic of Cancer is an imaginary line that is at an angle of 23.50 degrees.
• It is North of the Equator, which passes through the middle of India.
• Tropic of Cancer passes through 17 countries and India is one of them.

Additional Information

• It passes through the other eight states.
• Gujarat (Jasdan)
• Rajasthan (Kalinjarh)
• Madhya Pradesh (Shajapur)
• Chhattisgarh (Sonhat)
• Jharkhand (Lohardaga)
• West Bengal (Krishnanagar)
• Tripura (Udaipur)
• Mizoram (Champh)
• The Tropic of Cancer (23°30’N) passes almost halfway through the country India.
• From the extends south to north, the mainland of India extends between 8°4’N and 37°6’N latitudes.
• From the other extends west to east, India extends between 68°7’E and 97°25’E longitudes.
• Due to the great longitudinal extent and difference of about 29°, wide differences in local time of places located at two extreme points of the country.
• The difference between these two points would be approximately two hours.