SSC CHSL Previous Paper 35 (Held On: 26 Oct 2020 Shift 2) (Previous Year Paper)

The correct answer is 'In spite of any obstacle.'

Key Points

• Given Idiom: Come hell or high water means in spite of any obstacle.
• Example: I've always managed to get into work come hell or high water.
• From the given options, the third option is the most appropriate meaning of the given idiom.
  

Hence, the correct answer is option 3.

Mistake Points

• We may think from the phrase "Come hell or high water" that it is all about afraid of the challenges, but the correct answer is option 3. So be careful while dealing with such questions.
  

Additional Information

• The phrase originated in America around the mid-1800s and the earliest print reference is from 1882 in an Iowa newspaper, The Burlington Weekly Hawk-Eye. However, why hell or high water is referenced as obstacles, is not clear.

The wrongly spelt word is 'Permanant'.

Key Points    

• Let us explore the options:-
• 'Migrant' is a person who moves from one place to another, especially in order to find work or better living conditions.
• 'Precedent' means an earlier event or action that is regarded as an example or guide to be considered in subsequent similar circumstances.
• 'Permanant': There is no such word in English or we can say that there is some spelling mistake in this word.
• The correct spelling is 'Permanent' and it means lasting or intended to last or remain unchanged indefinitely.
• 'Adamant' means refusing to be persuaded or to change one's mind.
  

Hence, the correct answer is option 3.

Additional Information​

• Example of 'Permanent' in a sentence:
• Don't make a permanent decision for your temporary emotion.
• आइए हम विकल्पों का पता लगाएं : -
• ' Migrant' वह व्यक्ति होता है जो काम करने या बेहतर जीवनयापन की स्थिति खोजने के लिए एक स्थान से दूसरे स्थान पर जाता है ।
• ' Precedent ' का अर्थ है पहले की घटना या क्रिया जिसे बाद की समान परिस्थितियों में एक उदाहरण या मार्गदर्शक माना जाता है ।
• ' Permanant': अंग्रेजी में ऐसा कोई शब्द नहीं है या हम कह सकते हैं कि इस शब्द में कुछ वर्तनी की गलती है।
• सही वर्तनी ' Permanent' है और इसका अर्थ है स्थायी या अनिश्चित रूप से पिछले या अपरिवर्तित रहना ।
• ' Adamant' का अर्थ है मना करने से या किसी का मन बदलने से इनकार करना ।

इसलिए, सही उत्तर विकल्प 3 है ।

The correct answer is 'Incoherent'.

Key Points

• Let us explore the given options:-
• 'Eccentric' means (of a person or their behaviour) unconventional and slightly strange.
• Example: His eccentric behaviour lost him his job.
• 'Inaudible' means unable to be heard.
• Example: His weak voice was almost inaudible.
• 'Gullible' means easily persuaded to believe something.
• Example: He's so gullible he'll believe anything.
• 'Incoherent' means something that is expressed in an incomprehensible or confusing way.
• Example: He was confused and incoherent and I didn't get much sense out of him.
  

Hence, the correct answer is option 4*.*

• आइए दिए गए विकल्पों का पता लगाएं: -
• 'Eccentric' का अर्थ है   (एक व्यक्ति या उनके व्यवहार के) अपरंपरागत और थोड़ा अजीब ।
• उदाहरण: His eccentric behaviour lost him his job.
• 'Inaudible' का अर्थ है   सुनने में असमर्थ ।
• उदाहरण: His weak voice was almost inaudible.
• 'Gullible' का अर्थ है   आसानी से कुछ विश्वास करने के लिए राजी कर लिया ।
• उदाहरण: He's so gullible he'll believe anything.
• 'Incoherent’का अर्थ होता है, जो एक समझ से बाहर या भ्रमित तरीके से व्यक्त किया जाता है ।
• उदाहरण: He was confused and incoherent and I didn't get much sense out of him.
  

इसलिए, सही उत्तर विकल्प 4 है ।

The correct answer is Rama told me that she needed my help for her new assignment​​.

Key Points

• The given sentence is a direct speech.
• The basic rules for changing or converting direct speech into indirect speech:​
• The commas, inverted commas are removed, and 'that' is added.
• The reporting verb ''said to'' becomes ''told''.
• The first-person 'I' becomes the third-person 'she', the second-person 'your' becomes the first-person 'my' and the first-person 'my' becomes the third-person 'her'.
• The present simple tense format 'Subject + V1 (need) + Object' will be changed into the past simple tense format 'Subject + V2 (needed) + Object'.
  

Hence, the correct answer is option 4.

Additional Information

• The following table will enable us to know how tense changes into Indirect speech:-

The correct answer is 'himself'.

Key Points

• The given sentence is talking about Einstein.
• The use of the word 'was' in the sentence indicates a first and third-person singular past of 'be'.
• Therefore, the most appropriate word to be filled in the blank is 'himself'.
• 'Himself' is used for emphasizing that a particular man, boy, or male animal does something without help from anyone else.
• Example: Napolean himself was once a crying baby.
  

Hence, the correct answer is option 1.

Complete Sentence: Einstein himself was a rebel and didn’t follow any of his parents’ plans for him.

Additional Information

• Let us explore the other options:
• 'Oneself' is used for emphasizing that you and not anyone else does something.
• 'Themselves' is used for referring back to a group of people already mentioned in the same sentence.
• 'Itself' is used for referring back to something already mentioned in the same sentence.

The correct answer is 'performance'.

Key Points

• The given sentence is talking about some kind of condition during the climb.
• The use of the word 'successfully' in the sentence indicates in a way that accomplishes a desired aim or result.
• Therefore, the most appropriate word to be filled in the blank is 'performance'.
• 'Performance' means a task or operation seen in terms of how successfully it is performed.
• Example: The audience was clearly enchanted by her performance.
  

Hence, the correct answer is option 3.

Complete Sentence: They believe that academic performance guarantees a successful career...

Additional Information

• Let us explore the other options:
• 'Direction' means giving a sense of happy satisfaction or enjoyment.
• 'Realization' means allowing or characterized by great or excessive freedom of behaviour.
• 'Completion' means (of an argument or statement) seeming reasonable or probable.

The correct answer is 'as high as'.

Key Points

• The given sentence is talking about parents pushing and goading their children to study hard and score.
• The use of the word 'score' in the sentence indicates a rating or grade, such as a mark achieved in a test.
• Therefore, the most appropriate word to be filled in the blank is 'as high as'.
• 'As high as' means great, or greater than normal, in quantity, size, or intensity.
• Example: Interest rates are twice as high as those of our competitors.
  

Hence, the correct answer is option 3.

Complete Sentence: So many parents push and goad their children to study hard and score as high as possible in their exams.

Additional Information

• Let us explore the other options:
• 'As higher as' is used to compare one noun to another noun.
• 'As good as' means having the required qualities; of a high standard.
• 'As better as' means more desirable, satisfactory, or effective.

The correct answer is 'significantly'.

Key Points

• The given sentence is talking about parents giving some kind of importance to their children.
• The use of the word 'importance' in the sentence indicates the state or fact of being of great significance or value.
• Therefore, the most appropriate word to be filled in the blank is 'significantly'.
• 'Significantly' means in a sufficiently great or important way as to be worthy of attention.
• Example: Health problems can be significantly reduced by careful diet.
  

Hence, the correct answer is option 3.

Complete Sentence: The series highlighted how parents often give significantly higher importance to their children’s academic performance than their aptitudes.

Additional Information

• Let us explore the other options:
• 'Completely' means totally; utterly.
• 'Fully' means completely or entirely; to the fullest extent.
• 'Largely' means to a great extent.

The correct answer is 'about'.

Key Points

• The given sentence is talking about the obsession of parents.
• The use of the phrase 'their' in the sentence indicates belonging to or associated with the people or things previously mentioned or easily identified.
• Therefore, the most appropriate word to be filled in the blank is 'about'.
• 'About' means on the subject of; concerning a particular subject.
• Example: The two women jawed together all day about their children.
  

Hence, the correct answer is option 3.

Complete Sentence: I remember watching a TV series on bringing up children that showed parents being obsessed about their children’s performance in school exams.

Additional Information

• Let us explore the other options:
• 'Of' expresses the relationship of a part of something to its whole.
• 'In' is used for showing where someone or something is.
• 'To' is used for identifying the person or thing affected by or receiving something.

The correct answer is 'instant'.

Key Points

• The given sentence is talking something about the first meeting with the neighbours.
• The use of the word 'liking' in the sentence indicates a feeling of regard or fondness.
• Therefore, the most appropriate word to be filled in the blank is 'instant'.
• 'Instant' means happening or coming immediately.
• Example: The women took an instant dislike to one another.
  

Hence, the correct answer is option 1.

Complete Sentence: When I first met my neighbours I took an instant liking to them.

Additional Information

• Let us explore the other options:
• 'Instantly' means at once.
• 'Instance' means an example or single occurrence of something.
• 'Instantaneously' means instantly; at once.

The correct answer is 'Vulnerable'.

Key Points  

• The word 'Invincible' means too powerful to be defeated or overcome.
• The antonyms of the word 'Invincible' are "vulnerable, vincible, weak".
• From the antonym of the given word, we can say that the word 'Vulnerable' is the opposite in meaning.
• The word 'Vulnerable' means being in a situation where one is likely to meet with harm.
  

Hence, the correct answer is option 4. Let's see the meaning of other given options:-

Additional Information

• The synonyms of the word 'Invincible' are "invulnerable, unbeatable, unstoppable".
• Example of 'Invincible' in a sentence:
• They took an invincible lead in the chase for the championship.

The correct answer is 'Permit'.

Key Points  

• The word 'Deport' means to force to leave a country.
• The antonyms of the word 'Deport' are "permit, accept, receive".
• From the antonym of the given word, we can say that the word 'Permit' is the opposite in meaning.
• The word 'Permit' means to authorize or allow something.
  

Hence, the correct answer is option 2. Let's see the meaning of other given options:-

Additional Information

• The synonyms of the word 'Deport' are "displace, expel, transport".
• Example of 'Deport' in a sentence:
• People with invalid papers are deported to another country.

The correct answer is 'came to know'.

Key Points

• In the underlined segment, the use of the present tense form of the verb 'comes' is incorrect.
• The given sentence is in the past tense (indication: was, declared, knew).
• The simple past is a verb tense that is used to talk about things that happened or existed before now.
• Therefore, the past tense form of the verb 'came' should be used in place of the present tense form of the verb 'comes'.
  

Hence, the correct answer is option 2.

Correct Sentence: When the actress came to know that she was declared the winner of the best actress award, her joy knew no bounds.

The correct answer is 'Insulated'.

Key Points

• Let us explore the given options:-
• 'Hydrated' means caused to absorb water.
• Example: The bicyclists must be hydrated frequently.
• 'Insulated' means protected by interposing material that prevents the loss of heat or the intrusion of sound.
• Example: Many houses in the north are warm in winter because they are insulated so that the heat is not lost.
• 'Assimilated' means absorb and integrate (people, ideas, or culture) into a wider society or culture.
• Example: Immigrants have been successfully assimilated into the community.
• 'Calibrated' means carefully assessed, set, or adjusted.
• Example: These sensors should be systematically calibrated and checked for accurate signal outputs.
  

Hence, the correct answer is option 2*.*

The correct answer is 'precarious'.

Key Points

• The given sentence is talking about some kind of condition during the climb.
• The use of the phrase 'give up' in the sentence indicates to cease making an effort; admit defeat.
• Therefore, the most appropriate word to be filled in the blank is 'precarious'.
• 'Precarious' means not securely held or in position; dangerously likely to fall or collapse.
• Example: Her health remained precarious, despite the treatment.
  

Hence, the correct answer is option 1.

Complete Sentence: Even though we found ourselves in a precarious situation during our climb, we decided not to give up the expedition.

Additional Information

• Let us explore the other options:
• 'Pleasant' means giving a sense of happy satisfaction or enjoyment.
• 'Permissive' means allowing or characterized by great or excessive freedom of behaviour.
• 'Plausible' means (of an argument or statement) seeming reasonable or probable.

The correct answer is 'jobs to the youth' i.e. this part of the sentence has an error.

Key Points

• In the given sentence, the use of the preposition 'to' is incorrect.
• The preposition 'to' is used for saying who is told, given, or shown something.
• The preposition 'for' should be used in place of the preposition 'to'.
• The preposition 'for' means relating to or concerning someone or something.
  

Hence, the correct answer is option 4.

Correct Sentence: The country has the lowest per capita income and needs to create jobs for the youth.

The correct answer is 'CDAB'.

Key Points 

• The sentence 'C' is independent of any other sentences as it is giving general information about "Ram Parshad". Hence, 'C' is the first part.
• The phrase "One day I followed" mentioned in the sentence 'D' is linked with the phrase"head out of the house at the same time every evening'' mentioned in the sentence 'C'. Hence, 'D' follows 'C'.
• The phrase "into a part of the city" mentioned in the sentence 'A' is linked with the phrase ''where he went every day'' mentioned in the sentence 'D'. Hence, 'A' follows 'D'.
• The sentence 'B' is the concluding sentence. Hence, 'B' is the last sentence.
  

Paragraph after rearranging the sentences: From my conversation with the cook I had learned that Ram Parshad had started to head out of the house at the same time every evening. One day I followed at a distance to know where he went every day. He went into a part of the city I had never seen before and walked around a few alleys. At one point I distinctly saw him turn around as if to make sure no one was following him; then he darted away.

Hint

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

The correct answer is 'No improvement'.

Key Points

• In the underlined segment, there is no need for any substitution or improvement.
• The use of the quantifier ''a lot of'' which means ‘a great quantity of’ or a ‘large number of’ is absolutely correct.
• The singular verb 'is' and the singular noun 'confusion' are correctly used with the quantifier ''a lot of''.
• Therefore, no improvement is required in the underlined segment.
  

Hence, the correct answer is option 3.

Additional Information

• The expressions ''a lot of'' and ''lots of'' are rather informal. In a more formal style, we prefer expressions like ''a great deal of'', ''a large number of'', 'much' or 'many'.

The correct answer is 'On the occasion of Ambedkar Jayanti a speech will be delivered by Savita'.

• In Active Voice, a sentence emphasizes the subject, performing an action.
• In Passive Voice, a sentence emphasizes the action or the object of the sentence.
• The given sentence is in the active voice and 'Savita' is the subject and ''on the occasion of Ambedkar Jayanti'' is the object.
• When we convert this sentence into a passive voice, the subject 'Savita' of the active voice becomes the object, the object ''on the occasion of Ambedkar Jayanti''becomes the subject.
• The passive format "'will + be + V3 (delivered)" should be used.
• This is the active and passive voice rule for the future simple tense.

Hence, the correct answer is option 3.**

*Verbs of passive format have a different set of tenses (V3 - Past participle or Third form of the Verb) as given below in the table:

The correct answer is 'Advisible'.

Key Points    

• Let us explore the options:-
• 'Advisible': There is no such word in English or we can say that there is some spelling mistake in this word.
• The correct spelling is 'Advisable' and it means (of a course of action) to be recommended; sensible.
• 'Invisible' means unable to be seen.
• 'Capable' means having the ability, fitness, or quality necessary to do or achieve a specified thing.
• 'Irritable' means having or showing a tendency to be easily annoyed.
  

Hence, the correct answer is option 1.

Additional Information​

• Example of 'Advisable' in a sentence:
• It is advisable to insure your life against accidents.

The correct answer is 'Berate'.

Key Points

• The word 'Reproach' means to criticize someone severely or angrily especially for personal failings.
• The synonyms of the word 'Reproach' are "berate, blame, castigate".
• From the synonym of the given word, we can say that the word 'Berate' has the same meaning.
• The word 'Berate' means to scold or criticize someone angrily.
  

Hence, the correct answer is option 2. Let's see the meaning of other given options:-

Additional Information

• The antonyms of the word 'Reproach' are "laud, praise".
• Example of 'Reproach​​​' in a sentence:
• She got a sharp reproach from her boss.

The correct answer is 'DBAC'.

Key Points 

• The sentence 'D' is independent of any other sentences as it is giving general information about "Air pollution". Hence, 'D' is the first part.
• The phrase "wear full-sleeved clothes" mentioned in the sentence 'B' is linked with the word "precautions'' mentioned in the sentence 'D'. Hence, 'B' follows 'D'.
• The phrase "wear a hat to cover your hair and scalp" mentioned in the sentence 'A' is linked with the phrase ''exposed to bad quality air'' mentioned in the sentence 'B'. Hence, 'A' follows 'B'.
• The sentence 'C' is the concluding sentence. Hence, 'C' is the last sentence.
  

Paragraph after rearranging the sentences: Air pollution plays a major role in skin and hair-related problems for which you need to take precautions. Therefore, when you are exposed to bad quality air, try and wear full-sleeved clothes to cover as much of your skin as possible. You can also wear a hat to cover your hair and scalp to protect them from toxic particles that could be harmful. All the above precautions could save you from serious skin diseases.

Hint

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

The correct answer is 'Lethargy'.

Key Points

• The word 'Idleness' means an inclination not to do work or engage in activities.
• The synonyms of the word 'Idleness' are "lethargy, apathy, sluggishness".
• From the synonym of the given word, we can say that the word 'Lethargy' has the same meaning.
• The word 'Lethargy' means a lack of energy and enthusiasm.
  

Hence, the correct answer is option 4. Let's see the meaning of other given options:-

Additional Information

• The antonyms of the word 'Idleness' are "energy, exuberance, liveliness".
• Example of 'Idleness' in a sentence:
• His mother became fat because of idleness.

The correct answer is 'I do not want to go' i.e. this part of the sentence has an error.

Key Points

• In the given sentence, the use of the base form of the verb 'do' is incorrect.
• The given sentence is in the past tense (indication: declined, offered, had).
• The simple past is a verb tense that is used to talk about things that happened or existed before now.
• Therefore, the past tense form of the verb 'did' should be used in place of the base form of the verb 'do'.
  

Hence, the correct answer is option 3.

Correct Sentence: I declined the lunch offered by Suresh, not because I did not want to go, but because I had no time.

The correct answer is 'Forbidden.'

Key Points

• Given Idiom: Out of bounds means forbidden; not allowed.
• Example: The path by the railway line is officially out of bounds to both cyclists and walkers.
• From the given options, the first option is the most appropriate meaning of the given idiom.
  

Hence, the correct answer is option 1.

Mistake Points

• We may think from the phrase "Out of bounds" that it means limitless, but the correct answer is option 1. So be careful while dealing with such questions.
  

Additional Information

• This expression alludes to the boundaries of the playing area in numerous sports and to the rules applying to them. Its figurative use dates from the 1940s.

The Family tree chart for the given data is:

Clearly, F is the niece of A.

The given series:  A27Z, C5B, E9D, ____, ____.

Thus, the first letter of the next two terms will be G and I in this particular order.

The number in the middle is the sum of the position values of the two letters in the term as per the English alphabetical series.

Hence, the next two terms are G13F and I17H.

The given position of the dice:

From the first and the fourth positions of the dice, it is clear that F, D, A, and C are adjacent to B.

Hence, E is opposite B.

Hectare, Meter, and Volt all are units to measure Area, Length, and electric potential respectively.

While;

Angle is not a unit it is a geometric figure. 

Hence, Angle is the odd one out.

In 31 : 250

31 × 8 + 2 = 248 + 2 = 250

Similarly,

54 × 8  + 2 = 432 + 2 = 434

Hence, 54 : 434 has the same relation as 31 : 250.

To form the code, the letters in the word are replaced by their second successor and second predecessor in the alternate order as per the English alphabetical series as shown below.

STUDENT → URWBGLV

SImilarly,

Hence, the code for the word COMPUTER is EMONWRGP.

The given figure series:

In figure 1, there is a horizontal rectangle. In the next figure, there is a vertical rectangle and again in the next figure, there is a horizontal rectangle. Thus, in the next figure, there will be a vertical rectangle.

Also, the triangle is rotated by 90 degrees in the anti-clockwise direction in each figure. Thus, in the fourth figure, the black part of the triangle will be facing the east direction.

Also, the rhombus is at the tip and the base of the triangle in alternate order. In the third figure, the rhombus was at the base of the triangle. Thus, in the fourth figure, the rhombus will be at the tip of the triangle.

Hence, the second option is the answer figure.

The given series: 

(5 + 4) × 2 = 9 × 2 = 18

(9 + 2) × 2 = 11 × 2 = 22

Similarly,

(5 + 3) × 2 = 8 × 2 = 16

Hence, 16 is the missing term.

Fast is the opposite of slow, similarly, leftover is the opposite of fresh.

Hence, 'leftover : fresh' is similar to 'fast : slow'.

Principal = Rs.25,000

Interest rate = 7%

Time period = 1 year

Interest for one year = 25000 × 7 ÷ 100 = Rs.1750

Hence, the interest for one year is Rs.1750.

c _ cce _ fcdc _ _ ef _ _ cc _ e _

1) ecdefcde

c e c c e c f / c d c d e e f / f c c c d e e

2) eecdeefc

c e c c e e f / c d c c d e f / e e c c f e c

3) dececdef

c d c c e e f / c d c c e e f / c d c c e e f

4) fcfeefcd

c f c c e c f / c d c f e e f / e f c c c e d

Hence, dececdef is the correct answer.

4 ÷ 2 = 2 and 8 ÷ 4 = 2

Similarly,

16 ÷ 4 = 4 and 64 ÷ 16 = 4

Hence, (4, 16, 64) is similar to (2, 4, 8).

Alternate approach: The second and the third number is the square and cube of the first number.

Except for NOQ, in all other options, each letter is the second successor of the previous letter as per the English alphabetical series as shown below.

Hence, NOQ is different from the other three.

The number of squares in the given figure is shown below: 

We count squares separately. 

Number of square in this diagram is (5 × 3) + (4 × 2) + (3 × 1) = 15 + 8 + 3 = 26.

Number of square in this diagram is (3 × 6) + (2 × 5) + (1 × 4) = 18 + 10 + 4 = 32.

Therefore total squares from this two diagrams  = 32 + 26 = 58

The remaining Squares are :

From 

 number of squares are  (1 × 1) + (2 × 2) = 1 + 4 = 5 

Therefore total squares from this diagrams  = 60 + 5 = 65

Remaining square is

Hence, there are 66 squares in the figure.

The given figure:

When we will unfold the paper for the first time, we will get the shapes on the upper half that is vertically rotated by 180° as shown below

Again, when we will unfold the paper for the second time we will get similar shapes on the right-hand side of the paper as the shapes are horizontally symmetrical. The paper will look like the figure below:

Hence, the "first figure" is the answer figure.

The given Venn Diagram:

Triangle → Female

Circle → Graduates

Rectangle → Employed

Square → Youth under 30

The number that is common in the circle, square, rectangle, and triangle represents the female graduates who are under 30 years and are employed.

Clearly, '5' lies in the circle, triangle, rectangle, and square.

Hence, there are 5 female graduates under 30 who are employed.

We use these modes of transport to travel from one place to another. In terms of increasing order of weight/price/the distance one can travel using them:

1. Bicycle
   
2. Motorcycle
   
3. Car
   
4. Bus
   
5. Train

Hence, the logical order is 15243.

To form the code, the firs letter is replaced by its second predecessor, the second letter is replaced by its third predecessor, the third letter is replaced by its fourth predecessor and so on as per the English alphabetical series.

BREEZE → ZOAZTX

Similarly,

Hence, DOKOBR is the code for the word FROTHY.

Except for 340, all other numbers are divisible by 3. 

To check if a number is divisible by 3 or not, see if the sum of the digits of the number is divisible by 3 or not.

3 + 6 + 0 = 9 (divisible by 3)

2 + 3 + 4 = 9 (divisible by 3)

3 + 4 + 1 = 8 (not divisible by 3)

1 + 2 + 3 = 6 (divisible by 3)

Hence, 341 is different from the other three.

The given series: 6, 12, ?, 144, 720, 4320

6 × 2 = 12

12 × 3 = 36

36 × 4 = 144

144 × 5 = 720

720 × 6 = 4320

Hence, 36 is the missing term in the series.

The given shape:

Clearly, the given shape is hidden in the second figure.

According to the question:

[{(11 × 2) - (2 ÷ 2)} + (3 - 2)] ÷ 2 

[{(11 - 2) + (2 × 2)} ÷ (3 + 2)] × 2

⇒ [{9 + 4} ÷ 5] × 2

⇒ [13 ÷ 5] × 2

⇒ 2.6 × 2 = 5.2

Hence, 5.2 is the outcome of the given equation.

The given word:

If we place a mirror to the right of the word then all the letter of the word will be rotated by 180 degrees on its vertical axis as shown below.

Hence, the second figure is the correct option.

The Venn Diagram for the given data:

Conclusions:

I. Some needles are eggs → True (As all eggs are needles, some needles are definitely eggs)

II. Some grapes are eggs → False (As there is no relation between grapes and eggs)

Hence, only conclusion I follows.

In STAR and PRWU,

Similarly, 

Hence, QPVS is related to TRZP the same way PRWU is related to STAR.

Given 

The perimeter of rectangular field = 32 m

Formula Used 

Perimeter of rectangle = 2(length + breadth)

Calculation 

⇒ let the length and breadth be 5a and 3a respectively 

⇒ 32 = 2(5a + 3a) 

⇒ 16 = 8a 

⇒ a = 2 

⇒ so, length = 5 × 2 = 10 m, breadth = 3 × 2 = 6 m

∴ the length and breadth of rectangle is 10 m and 6 m respectively

Given

sin (2x - 45) = cosx 

Formula Used 

sinθ = cos(90 - θ)° 

Calculation 

We know that, sin 45 = cos 45

⇒ co[90°- (2x - 45)°] = cosx

⇒ 90 - 2x + 45 = x 

⇒ x = 135/3 = 45° 

⇒ cotx = cot 45° = 1

∴ the value of cotx is 1

Given 

From the graph, 

No of science student in 2017 - 2018 = 25

No of Mathematics student in 2017 - 2018 = 53

No of commerce student in 2018 - 2019 = 48

No of Vocational student in 2018 - 2019 =  38

Formula Used 

Average = sum of observation/No. of observation

Calculation

⇒ Sum of no. of science and Mathematics student in 2017 - 2018 = 25 + 53 = 78

⇒ Sum of no. of commerce and vocational student in 2018 - 2019 = 48 + 38 = 86

⇒ Difference = 86 - 78 = 8 

⇒ Average = 8/2 = 4 

∴ the difference between the average no. of student is 4

Given 

Ratio of cost price and selling price = 10 : 11 

Formula Used 

Profit% = (profit/cp) × 100

Profit = sp - cp 

Calculation 

⇒ let the cost price and selling price be 10x ad 11x 

⇒ Profit = 11x - 10x = x 

⇒ Profit % = (x/10x) × 100 = 10% 

∴ the profit percentage is 10%

Given 

Ravi and Mohan can complete work = 3 days

Ravi alone complete the work = 7 days

Formula Used

Work = time × efficiency 

Calculation

⇒ LCM of (3, 7) = 21

⇒ Let the total work be 21

⇒ Efficiency of Ravi and Mohan together = 21/3 = 7

⇒ Efficiency of Ravi alone = 21/7 = 3

⇒ Efficiency of Mohan = 7 - 3 = 4 

⇒ Mohan takes time to complete the work alone = 21/4 = $5\frac{1}{4}$ days

Given:

The income of renu = 90% of sudha

Calculation: 

⇒ Income of Sudha = 3000 + 10% of 3000 = Rs 3300 

⇒ Income of Renu = 90% of 3300 = (90/100) × 3300

⇒ 2970

∴ the income of Renu is Rs 2970

Given 

A = (1 + 2x)/(1 - 2x)

B = (1 - 2x)/(1 + 2x) 

Calculation 

⇒ A = 1/B

⇒ (A + B)/(A - B) = [{(1 + B2)/B}/{(1 - B2)/B}]

⇒ (A + B)/(A - B) = (1+ B2)/(1 - B)

⇒ (A + B)/(A - B)  = (8x2 + 2)/8x = x + 1/4x

Given 

Principal = Rs 8000 

Time = 2 years 

Rate of interest = 5% 

Formula Used 

Simple interest = Principal × rate × time/100

Compound interest = principal[(1 + r/100)^t - 1)

Calculation

⇒ simple interest = (8000 × 2 × 5)/100 = Rs 800

⇒ compound interest = 8000[(1 + 1/20)² - 1] = 8000 × 41/400 = Rs 820

⇒ the difference between simple interest and compound interest = Rs 820 - Rs 800 = Rs 20

Given 

From Pie chart,

Students in R school = 14% of total students

Students in S school = 22% of total students

Formula Used

Average = Sum of observation/No. of Observation

Calculation 

⇒  Students in R school = (14/100) × 8400 = 1176 

⇒ Students in S school = (22/100) × 8400 = 1848

⇒ Average in School R and S together = (1176 + 1848)/2 = 3024/2 = 1512

∴ The average number of student in schools R and S together is 1512

Given 

Marked price of a books = Rs 540 

Formula Used 

Discount = Marked price - selling price 

Discount % =(discount/marked) × 100 

Calculation 

⇒ 10% = (Discount/540) × 100 

⇒ Discount = 54 

⇒ Selling price = Marked price - discount 

⇒ SP = 540 - 54 = Rs 486 

∴ The selling price of books is Rs 486

Given 

Radius of circle = 10 cm 

distance b/w center and chord  = 6 cm

Formula Used 

(Hypotnuese)² = (Perpendicular)² + (Base)²

Calculation

⇒ radius of circle = hypotuese = 10 cm

⇒ distance b/w center and chord = perpendicular = 6cm

⇒ so, length of chord = 2 × Base 

⇒ 10² = 6² + Base²

⇒ Base = 8 cm 

⇒ so, length of chord = 2 × 8 = 16 cm

∴ the length of chord AB is 16 cm

Calculation 

(secθ + tanθ)/(secθ - tanθ) 

⇒ Use factorisation method 

⇒ [(secθ + tanθ)/(secθ - tanθ)] × [(secθ + tanθ)/secθ + tanθ)]

⇒ (secθ + tanθ)²/(sec²θ  - tan²θ )

⇒ we know that, sec²θ - tan²θ = 1

⇒ (secθ + tanθ)/(secθ - tanθ)  = (secθ + tanθ)2

Given 

Abhi takes time = 9 hrs

Formula Used 

Time = Distance/speed 

Calculation 

Let the distance be covered by Abhi be 2x 

⇒ 9 hrs = (x/40) + (x/50)

⇒ x = (9 × 2000)/90 

⇒ x = 200 km 

∴ the total distance covered by Abhi = 2x = 400 km

Shortcut Trick

For divisibility by 5, the last digit y must be either 0 or 5.

Since the number is also divisible by 8, it must be even, which eliminates y = 5; therefore, y = 0.

For divisibility by 8, the last three digits 3x0 must be divisible by 8.

Testing the smallest values: 300 ÷ 8 (No), 310 ÷ 8 (No), 320 ÷ 8 = 40 (Yes).

Smallest pair is x = 2 and y = 0.

∴ The correct answer is x = 2, y = 0.

Alternate Method

Given: The number 62783xy is divisible by both 8 and 5.

Condition for Divisibility by 5:

⇒ The last digit y must be 0 or 5.

Condition for Divisibility by 8:

⇒ The last three digits 3xy must be divisible by 8.

⇒ If y = 5, the number 3x5 is odd. An odd number is never divisible by 8.

⇒ Thus, y = 0 is the only possibility.

Finding the smallest x for 3x0:

⇒ If x = 0, 300 ÷ 8 = 37.5 (Not divisible)

⇒ If x = 1, 310 ÷ 8 = 38.75 (Not divisible)

⇒ If x = 2, 320 ÷ 8 = 40 (Divisible)

⇒ Comparing values, the smallest values are x = 2 and y = 0.

∴ The correct answer is x = 2, y = 0.

Additional Information

Divisibility Rule of 8

A number is divisible by 8 if the number formed by its last three digits is divisible by 8 or if the last three digits are 000.

Divisibility Rule of 5

A number is divisible by 5 if its units digit is either 0 or 5.

Divisibility by 40

Since 40 = 5 × 8 (and they are co-prime), any number divisible by both 5 and 8 is also divisible by 40.

Parity Rule for Divisibility

Any number divisible by an even number (like 2, 4, 6, 8, etc.) must itself be an even number.

Given:

[(3 + 5 - 4) + (17 - 3 × 4)] + [ 4 ÷ 2 - 16 ÷ 4 + 3] 

Concept Used:

Follow the VBODMAS Rule, 

Calculation:

⇒ [(3 + 5 - 4) + (17 - 3 × 4)] + [ 4 ÷ 2 - 16 ÷ 4 + 3] 

⇒ [4 + (17 - 12)] + [2 - 4 + 3]

⇒ [4 + 5] + [1]

⇒ 10

Given 

∠ABC = 65° 

AB = AC {ΔABC is an isosceles traingle}

Formula Used 

 The sum of angle of triangle is 180° 

Calculation 

⇒ We know that, in isosceles triangle 2 sides and 2 angle are equal 

⇒ If AB = AC then ∠ ABC = ∠ACB = 65° 

⇒ so, ∠BCA = ∠ACB = 65° 

⇒ ∠ABC + ∠ BAC + ∠ACB = 180° 

⇒ ∠BAC = 180° - 130° 

⇒ ∠BAC = 50°

Given:

Length of side cube = 7cm 

Formula Used: 

volume of cube = (side)³

Calculation:

⇒ Volume of the cube = 7³ = 343 cm³

∴ the volume of the cube is 343 cm3

Given 

The average age of Sonu, Hari and Govind = 30 years

Formula Used 

Average = Sum of observation/No. of observation

Calculation

⇒ Sum of age = 30 × 3 = 90 

⇒ let the age of Sonu, Hari and Govind be 4x, 5x and 6x 

⇒ 4x + 5x + 6x = 90 

⇒ 15x = 90 

⇒ x = 6 

⇒ Difference between the ages of Sonu and Govind = 6x - 4x 

⇒ 2x = 2 × 6 = 12 years 

∴  the difference between the ages of Sonu and Govind is 12 years

Given 

p(x) = x3 + 2x2 - ax - b

g(x) = (x2 - 1)

Calculation 

⇒ g(x) = 0 

⇒ (x2 - 1) = 0 

⇒ x = 1, -1 

⇒ p(1) = 0 

⇒ 13 + 2(1)2 - a - b = 0 

⇒ a + b = 3 ----(i)

⇒ p(-1) = 0

⇒ (-1)3 + 2(-1)2 + a - b = 0

⇒ a - b = -1 ----(ii)

 ⇒ from eq(i) and (ii) 

⇒ a = 1, b = 2

⇒From the Graph,  

⇒ Number of total student in 2017 - 2018 = 25 + 40 + 53 + 32 = 150 

⇒ Number of total student in 2018 - 2019= 30 + 48 + 64 + 38 = 180 

⇒ Required Ratio = 150 : 180 = 5 : 6 

∴ the ratio of the total number of students appeared in examination in 2017 - 18 and 2018 - 19 is 5 : 6

Given 

Area of Quadrilateral = 12√3 cm²

Concept Used 

 We know that The median of a triangle is cut the triangle in equal areas

Area of triangle = (√3/4) (side)² 

Calculation 

⇒ Area of ΔABC = Area of Quadrilateral BDGF × 3 

⇒ Area of ΔABC = 12√3 × 3 

⇒Area of ΔABC = 36√3 cm²

⇒ 36√3 = (√3/4) × (side)²

⇒ side = 12 cm

∴ the side of ΔABC is 12 cm

Total number of students appeared in 2017-18 = 25 + 40 + 53 + 32 = 150

Total number of students appeared in 2018-19 = 30 + 48 + 64 + 38 = 180

∴ Required percentage = (180 - 150) × 100/180 = 16.67% ≈ 16.7%

Given 

$\frac{sin23^\circ cos67^\circ tan45^\circ +cos23^\circ sin67^\circ cot45^\circ }{2sin45^\circ cos45^\circ }$

Formula Used 

sin(90° - θ) = cosθ 

cos(90 - θ) = sinθ 

sin² θ + cos²θ = 1

2sinθcosθ = sin2θ  

Calculation 

tan 45° = 1, cot 45° = 1

sin23° = sin(90 - 67)° = cos67° 

cos23° = cos(90 - 67)° = sin67° 

(sin23°sin23° + cos23° cos23°)/sin90° 

⇒ sin² 23° + cos² 23° = 1

Formula used: 

SinA . CosB + CosA . SinB = Sin(A + B)

tan 45° = 1, cot 45° = 1

Calculation:

[Sin23° . Cos67° .Tan45° + Cos23°. Sin67°. Cot45°]/2 Sin45°. Cos45° 

⇒  [Sin23° . Cos67° + Cos23°. Sin67°]/2 × (1/√2) × (1/√2)

⇒ Sin(23° + 67°)/1

⇒ Sin90° 

⇒ 1

∴ The required value of the trigonometric expression is 1.

Given 

OA = 13 cm 

OP = 5cm 

Formula Used 

(Hypotnuese)² = (Perpendicular)² + (Base)²

Calculation 

We know that, tangent makes right angle with center of circle 

⇒ ΔOPA is right angle triangle, ∠OPA = 90°  

⇒ (Hypotnuese)2 = (Perpendicular)2 + (Base)2

⇒ (OA)² = (AP)² + (OP)²

⇒ 13² = AP² + 5² 

⇒ AP = 12 cm

Given 

x + 1/x = 5

Formula Used

if x + 1/x = a

then, x² + 1/x² = a² - 2 

Calculation 

⇒ we have , x + 1/x = 5

⇒ then, x2 + 1/x2 = 52 - 2 = 23 

∴ the value of x2 + 1/x² is 23

The correct answer is Jawaharlal Nehru.

• In 1946, an Advisory Planning Board was set up by the interim Government of India with K. C. Neogyas its Chairman. Immediately after independence in 1947, the Economic Programme Committee (EPC) was formed by the All India Congress Committee with Nehru as its chairman.

Additional Information

• First of all the idea of a planned economy was crystallized in the 1930s when our national leaders came under the influence of socialist philosophy.
• India’s Five-year plans were very much impressed by the rapid strides achieved by the USSR through five years plans.
• Immediately after independence in 1947, the Economic Programme Committee (EPC) was formed by the All India Congress Committee with Nehru as its chairman.
• This committee was to make a plan to balance private and public partnerships and urban and rural economies.
• In 1948, this committee recommended forming a planning commission.

The correct answer is Ambubachi Mela.

• Ambubachi Mela is one of the biggest congregations of eastern India. During the period of Ambubachi from the seventh to the tenth day of the Hindu month of "Asadha", the doors of the shrine are closed to all.
• It is the celebration of the yearly menstruation course of goddess Kamakhya.

Additional Information

• It is believed that the presiding goddess of the temple, Devi Kamakhya, the Mother Shakti, goes through her annual cycle of menstruation during this time stretch.
• Ambubachi Mela is an annual fair organized at Guwahati’s Kamakhya Temple.
• The temple is perched on top of the Nilachal Hill and is one of the most famous tourist destinations in Assam.
• The Kamakhya Temple is known to be one of the 51 shakti peethas of goddess Shakti.

The correct answer is Priyanka Chopra.

• Unicef honored Indian actress Priyanka Chopra with the Danny Kaye Humanitarian Award at the Unicef Snowflake Ball in December.
• The event was held on December 3 in New York.

Additional Information

• UNICEF works in the world’s toughest places to reach the most disadvantaged children and adolescents – and to protect the rights of every child, everywhere.
• UNICEF's mission is The world has changed, but children’s needs have not.
• UNICEF is present in 191 countries and territories around the world, but not involved in nine others (Bahamas, Brunei, Cyprus, Latvia, Liechtenstein, Malta, Mauritius, Monaco, Singapore, and Taiwan).
• UNICEF headquarters is in New York.

The correct answer is Odisha.

• Chief Minister Naveen Patnaik announced that Odisha won the World Habitat Award 2019 for the Jaga Mission.

Additional Information

• Initiated in 1985, the annual World Habitat Awards competition attracts projects which provide an outstanding contribution to people’s living conditions in a variety of contexts.
• More than 250 outstanding World Habitat Awards projects have been recognized over the years, demonstrating substantial, lasting improvements in living conditions.
• The twin goals of the Habitat Agenda are adequate shelter for all and the development of sustainable human settlements in an urbanizing world.

The correct answer is Smriti Mandhana.

• Indian captain Virat Kohli was named The Wisden Almanack's Leading Cricketer of the Year for 2018 while Smriti Mandhana won the Women's Leading Cricketer award.
• Kohli, who has now won the title thrice, is third only to Sir Don Bradman and Jack Hobbs who have won it 10 and eight times respectively.

Additional Information

• Smriti Shriniwas Mandhana (born 18 July 1996) is an Indian cricketer who plays for the Indian women's national team.
• In June 2018, the Board of Control for Cricket in India (BCCI) named her the Best Women's International Cricketer.
• Smriti Mandhana at just 18 years and 29 days made her debut in Indian Women Test Team.
• She was 18 years and 29 days when she made her test debut in 2014.

The correct answer is 2010.

• The symbol is an amalgam of Devanagari "Ra" and the Roman Capital "R" with two parallel horizontal stripes running at the top representing the national flag and also the "equal to" sign.
• The Indian Rupee sign was adopted by the Government of India on 15th July 2010.

Additional Information

• Udaya Kumar was just a day or two away from starting his new job in the Department of Design at the Indian Institute of Technology (IIT), Guwahati, in 2010 when he won a national contest to design a symbol for the Indian rupee.
• The Indian rupee (INR) is the currency of India.
• INR is the International Organization for Standardization currency code for the Indian rupee, for which the currency symbol is ₹.

The correct answer is Ramesh Pandey.

• Senior Indian Forest Service officer Ramesh Pandey was selected for the prestigious Asia Environmental Enforcement Award by the United Nations Environment Programme.

Additional Information

• The 1996-batch IFS officer, posted as Chief Conservator Forests in Lucknow and Secretary, UP State Bio-diversity Board, is known for his investigation and intelligence gathering on poachers.
• Pandey also received the award at the United Nations Conference Centre in Bangkok.
• The purpose of the Asia Environmental Enforcement Awards is to publicly recognize outstanding achievements by public organizations and individuals in Asia to combat transboundary environmental crime.

The correct answer is 2007.

• The Rig Veda manuscripts from Bhandarkar Oriental Research Institute, Pune, have been nominated for inscription in UNESCO's “Memory of the World” Register 2007.

Additional Information

• The 30 manuscripts of Rigveda preserved at the Bhandarkar Oriental Research Institute, Pune were added to UNESCO's Memory of the World Register in 2007.
• Rigveda, (Sanskrit: “The Knowledge of Verses”) also spelt Ṛgveda, the oldest of the sacred books of Hinduism, composed in an ancient form of Sanskrit about 1500 BCE, in what is now the Punjab region of India and Pakistan.
• According to tradition, Vyasa is the compiler of the Vedas, who arranged the four kinds of mantras into four Samhitas (Collections).
• Lord Shiva is the all-pervading God of all gods, the supreme consciousness according to Vedas and Upanishads.

The correct answer is Babur.

• In 1526, the Mughal forces of Babur, the Timurid ruler of Kabulistan, defeated the much larger ruling army of Ibrahim Lodi, Sultan of Delhi.

Additional Information

• The first battle of Panipat was fought in 1526 between Babur and Ibrahim Lodi.
• Panipat was a legendary location where after 1526, multiple battles were fought between the Mughal and varying other forces.
• He was invited by Daulat Khan, the governor of Punjab, to invade the region and unsettle Ibrahim Lodi.
• Lodi’s army relied heavily on cavalry and especially on elephants, which in earlier times, could shock the enemy and rout them.

The correct answer is Jupiter.

• The gas giants of our solar system are Jupiter, Saturn, Uranus, and Neptune.
• These four large planets, also called jovian planets after Jupiter, reside in the outer part of the solar system past the orbits of Mars and the asteroid belt.

Additional Information

• A gas giant is a large planet mostly composed of helium and/or hydrogen.
• These planets, like Jupiter and Saturn in our solar system, don't have hard surfaces and instead have swirling gases above a solid core.
• The planet is any of the large bodies that orbit the Sun, including Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune, in the order of closeness to the Sun.

The correct answer is 12.

Key Points

• Function Keys are keys on the keyboard which cause the operating system to command an interpreter or an application to perform certain actions on the screen.
• There are 12 keys on the keyboard from F1 to F12.

Additional Information

• The function keys or F keys are lined across the top of the keyboard and labelled F1 through F12.
• These keys act as shortcuts, performing certain functions, like saving files, printing data, or refreshing a page.
• For example, the F1 key is often used as the default help key in many programs.

The correct answer is General Bipin Rawat.

• General Bipin Rawat was named the country's first Chief of Defence Staff.

Key Points

• Indian soldiers are considered one of the best on high elevations, jungle combat, and mountain warfare.
• The Siachen conflict is an excellent example of mountain warfare.
• The conflict between India and Pakistan over the disputed Siachen Glacier in Kashmir is common knowledge.

Important Points

• Lieutenant General Manoj Pande was appointed as 29th Chief of the Army Staff (2022).
• After the death in a helicopter crash of the country’s first Chief of Defence Staff, General Bipin Rawat (retired).
• The Government announced Lt General Anil Chauhan (retired) as the new CDS.
• He is the second CDS of India.

The correct answer is Richard Willstätter.

• The Nobel Prize in Chemistry 1915 was awarded to Richard Martin Willstätter "for his researches on plant pigments, especially chlorophyll."

Additional Information

• The Royal Swedish Academy of Sciences selects the Nobel Laureate in Physics and Chemistry, Karolinska Institute selects Nobel Laureate in the field of Physiology or Medicine, the Swedish Academy for the Nobel Prize selects Nobel Laureate in Literature, and a Committee of five persons to be elected by the Norwegian Parliament selects for the Nobel Peace Prize.
• In 1968, the Sveriges Riksbank established the Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel.
• The Royal Swedish Academy of Sciences was given the task to select the Laureates in Economic Sciences starting in 1969.
• On 27 November 1895, Alfred Nobel signed his testament, giving the largest share of his fortune to a series of prizes in Physics, Chemistry, Medicine or Physiology, Literature, and Peace.

The correct answer is Vidiadhar Surajprasad Naipaul.

• A Million Mutinies Now is a nonfiction book by V. S. Naipaul.
• It was published in 1990.
• It is a travelogue written during the author's sojourn in his ancestral land of India.

Additional Information

• V.S. Naipaul tells stories that show us ourselves and the reality we live in.
• His use of language is as precise as it is beautiful. Simple, strong words, with which to express the humanity of all of us.
• The Nobel Prize is an international award administered by the Nobel Foundation in Stockholm, Sweden, and based on the fortune of Alfred Nobel, Swedish inventor, and entrepreneur.
• In 1968, Sveriges Riksbank established The Sveriges Riksbank Prize in Economic Sciences in Memory of Alfred Nobel, founder of the Nobel Prize.

The correct answer is Lord Wellesley.

• The doctrine of subsidiary alliance was introduced by Lord Wellesley.
• Under the subsidiary alliance system, the ruler of the allying Indian State was compelled to accept the permanent stationing of a British force within his territory and to pay a subsidy for its maintenance.

​​

Additional Information

• The term "Subsidiary Alliance" was introduced by French Governor Dupleix and was firstly used by Lord Wellesley who effectively institutionalized the policy of “non-intervention” which made the Nawab and Nizams subsidiary allies by signing almost 100 such treaties.
• The allies of the Indian state’s rulers were compelled to accept the permanent garrison of the British Army within their territories and to pay a subsidy for its maintenance.
• The Indian ruler could not employ any European in their service without prior approval of the British.
• They could not negotiate with any other Indian rulers without consulting the Governor-General.

The correct answer is Heike Kamerlingh Onnes.

Key Points

• Superconductivity was discovered in 1911 by the Dutch physicist Heike Kamerlingh Onnes, and he was awarded the Nobel Prize for Physics in 1913 for his low-temperature research.
• In 1908, Kamerlingh Onnes successfully liquefied helium. This allowed him to investigate the thermodynamics properties of helium in the liquid and gas phases.
• He also investigated the electrical properties of metals down to about 1K.
• In 1911, he observed the transition to a "zero resistance state" in a pure mercury sample as the temperature of the sample was lowered to below 4.2K.
• He labeled this "zero resistance state" as "superconductivity."

Additional Information

• Superconductivity:-
• It is a complete disappearance of electrical resistance in various solids when they are cooled below a characteristic temperature. This temperature, called the transition temperature, varies for different materials but generally is below 20 K (−253 °C).

The correct answer is Virendra Kumar.

• Virendra Kumar was sworn in as Protem Speaker of 17th Lok Sabha. President Ram Nath Kovind swore in a seven-term member of Parliament Virendra Kumar as the Protem Speaker of Lok Sabha.

Additional Information

• The first session of the newly-constituted 17th Lok Sabha was held from June 17 to July 26.
• The Election for the Lok Sabha Speaker was scheduled to be held on June 19, 2019.
• Virendra Kumar was elected to the 11th Lok Sabha for the first time in 1996 and became a member of the Standing Committee on Labour and Welfare.
• Kumar was also served a prison sentence of 16 months under the Maintenance of Internal Security Act (MISA) in protest against the imposition of Emergency.

The correct answer is Pyrheliometer.

• For quality data of solar radiation, pyranometers have to be calibrated at regular intervals and required proper maintenance.
• The instrument used for measuring the intensity of direct solar radiation, that is, beam radiation is called a pyrheliometer.

Additional Information

• An optometer is a device that is used to assess a patient's vision, looking both at power and range.
• This device is utilized by an optometrist or ophthalmologist in a clinical setting.
• A marine chronometer is a precision timepiece that is carried on a ship and employed in the determination of the ship's position by celestial navigation.
• It is used to determine longitude by comparing Greenwich Mean Time (GMT) and the time at the current location found from observations of celestial bodies.
• A refractometer is used to determine a concentration of a particular substance within a given solution.
• It operates based on the principle of refraction.
• When rays of light pass from one medium into another, they are bent either toward or away from a normal line between the two media.