SSC CHSL 2020 Official Paper 30 (Held on: 10 Aug 2021 Shift 3) (Previous Year Paper)

The incorrect spelling is- Preshious.

Key Points

• The correct spelling of the word is- Precious.
• The meaning of the word is- of great value; not to be wasted or treated carelessly.
• The synonyms of the word can be Valuable, rare, expensive, etc.

Hence, the correct answer is Option 1.

Additional Information

• The rest of the words are absolutely correct. The meaning of the words is-
• Plenary- unqualified; absolute.
• Presentable- clean, smart, or decent enough to be seen in public.
• Peaceful- free from disturbance; tranquil.

The correct answer is 'Waver'

Key Points

• Let's see the meanings of the given words-
• Vacillate- waver between different opinions or actions; be indecisive. विभिन्न मतों या कार्यों के बीच डगमगाना; अनिर्णायक हो।
• Fortify- provide (a place) with defensive works as protection against attack. हमले के खिलाफ सुरक्षा के रूप में रक्षात्मक कार्यों के साथ (एक जगह) प्रदान करें।
• Strengthen- make or become stronger. बनाना या मजबूत होना।
• Augment- make (something) greater by adding to it; increase. (कुछ) जोड़कर बड़ा करना; बढ़ोतरी।
• Waver- move in a quivering way; flicker. कांपते हुए तरीके से आगे बढ़ें; झिलमिलाहट
• Hence, according to the meanings of the given words, the correct answer is Option 4.

The correct answer is Utopia.

Key Points

• Let's see the meanings of the given words-
• Utopia- an imagined place or state of things in which everything is perfect.
• Heaven- a place regarded in various religions as the abode of God (or the gods) and the angels, and of the good after death, often traditionally depicted as being above the sky.
• Paradise- (in some religions) heaven as the ultimate abode of the just.
• Aden-  the main port and commercial capital of Yemen, on the N coast of the Gulf of Aden
• Hence, according to the meaning of the given words, the correct answer is Option 1.

The erroneous part is "Sanitize her hands."

Key Points

• In the given sentence, the usage of 'Sanitize' is incorrect instead of it use 'Sanitized'
• According to the rule of parallelism, Whenever the verbs are in parallel then we need to use all the verbs in the same form. Here, put is in the second form as we can get a hint from the verb walked as it is given in the second form also it is connected with the conjunction 'and'
• Hence, the correct sentence is- Vidya put on her mask, sanitized her hands and walked into the shop.

The correct answer is deputed.

Key Points

• Let's see the meanings of the given words-
• Committed- pledged or bound to a certain course or policy; dedicated.
• Declared- openly or formally asserted or announced.
• Deputed- appoint or instruct (someone) to perform a task for which one is responsible.
• Reserved- slow to reveal emotion or opinions.
• Hence, according to the meanings of the given words, the correct answer is Option 3 i.e. Deputed.
• The speaker of the sentence wants to say that The principal was busy which is why the principal appointed someone else to attend the conference. Hence, according to the context 'Deputed' is the correct answer.

The correct answer is Residue.

Key Points

• Let's see the meanings of the given words-
• Silt- fine sand, clay, or other material carried by running water and deposited as a sediment, especially in a channel or harbour.
• Residue- a small amount of something that remains after the main part has gone or been taken or used.
• Cut- make an opening, incision, or wound in (something) with a sharp-edged tool or object.
• Incision- a surgical cut made in skin or flesh.
• Opening- a space or gap that allows passage or access.
• Hence, according to the meanings of the given words, the correct answer is Option 1 i.e. Residue.

The correct answer is Flexible.

Key Points

• Let's see the meanings of the given words-
• Rigid- unable to bend or be forced out of shape; not flexible.
• Flexible- capable of bending easily without breaking.
• Adamant- refusing to be persuaded or to change one's mind.
• Definite- clearly stated or decided; not vague or doubtful.
• Firm- having a solid, almost unyielding surface or structure.
• Hence, according to the meanings of the given words, the correct answer is Option 1 i.e. Flexible.

The correct answer is 'Make a beginning or start something'

Key Points

• The meaning of the idiom 'Break the ice' is- do or say something to relieve tension or get conversation going in a strained situation or when strangers meet. तनाव दूर करने या तनावपूर्ण स्थिति में बातचीत करने के लिए या जब अजनबी मिलते हैं तो कुछ करें या कहें।
• Let's see an example-
• Someone suggested that we play a party game to break the ice.
• Hence, the correct answer is Option 2.

The correct answer is Regardless of whether.

Key Points

• In the given sentence, the usage of 'Regard of whether' is incorrect instead use 'Regardless of whether'
• 'Regard' is a verb. We need to use an adverb that will work as a connector.
• Regardless means despite; not being affected by something.
• This job is open to all, regardless of previous experience.
• We need to use 'Whether' because there is doubtfulness in the sentence that the students were ready or not hence, we need to use 'Whether' ((used especially in reporting questions and expressing doubts) if, or not)
• Example- I wasn't sure whether you'd like it.

Hence, the correct sentence is- Regardless of whether the students were ready or not the teacher announced the dates of the test.

The correct answer is Competent.

Key Points

• Let's see the meanings of the given words-
• Inept- not skilled or effective
• Competent- having the necessary ability, knowledge, or skill to do something successfully.
• Lacking- not available or in short supply.
• Useless- not fulfilling or not expected to achieve the intended purpose or desired outcome.
• Partial- existing only in part; incomplete.
• Hence, the correct answer (Antonym) is Option 1 i.e. Competent.

The correct answer is 'Contain'

Key Points

• Let's see the meanings of the given words-
• Consist- be composed or made up of. (बना या बना हुआ।)
• Codify- arrange (laws or rules) into a systematic code. (व्यवस्थित (कानून या नियम) एक व्यवस्थित कोड में।)
• Contain- be made up of (a number of things). ((कई चीजों) से बना हो।)
• Cover- put something on top of or in front of (something), especially in order to protect or conceal it. ((किसी चीज) के ऊपर या सामने कुछ रखना, विशेष रूप से उसे बचाने या छिपाने के लिए।)
• According to the meanings of the words, Option 2 and 4 are eliminated as they are not making a sentence meaningful. We use 'consist' with the preposition 'of' because consist is an intransitive verb and in the sentence, the object is mentioned i.e. 'Carbon, oxygen, and hydrogen'

So the correct sentence is- Carbohydrates are so called because they contain carbon, oxygen, and hydrogen.

The correct answer is: Option 2.

Key Points

• The word "Suceed" is incorrectly spelt. The correct spelling is "Succeed". (सफल होना)
• Example: If you work hard, you will succeed in your endeavors.
• "Succeed" means to achieve the desired aim or result. (सफल होना)
• Example: She managed to succeed in her business venture despite numerous challenges.

Therefore, the correct answer is: Option 2.

Additional Information

Here are the other options explained along with their Hindi meanings and example sentences:

• Inherit (विरासत में पाना): To receive (money, property, or a title) as an heir at the death of the previous holder.
• Example: He will inherit the family estate after his grandfather's passing.
• Accede (सहमति देना): To agree to a demand, request, or treaty.
• Example: The government acceded to the public's demands for better healthcare.
• Implant (प्रतिरोपण करना): To insert or fix (tissue or an artificial object) in a person's body, especially by surgery.
• Example: The surgeon will implant a pacemaker to regulate his heartbeat.

The correct answer is he has to isolate himself

Key Points

• In the given sentence, the usage of 'have to' is incorrect instead of it we need to use 'has to'
• The subject of the sentence is- 'he' hence, we need to use a singular verb so 'has to' will be used.
• 'Has to' is a modal auxiliary verb that means 'to need to or be forced to; must' and the main verb of the sentence is 'isolate'
• Example- He has to go to Vermont tomorrow.

Hence, the correct sentence is- If a person tests positive for Covid-19, he has to isolate himself immediately so that he does not infect others.

The correct answer is 'DACB'

Key Points

• Whenever the years are given in the sentences then try to reorganize the years.
• The given sentences are talking about Nepal gaining the name of a democratic republic.
• The first sentence will be sentence D as the year mentioned in this sentence is '1950' and there is a crown's authority in 1951.
• The second sentence will be Sentence A as the year mentioned in this sentence is '1955'
• The third sentence will be sentence C as the year menioned in this sentence is '1991' also tells that in this year the parliamentary system has been established.
• The fourth sentence will be sentence B as the year mentioned in this sentence is ''2008"

So the correct sequence is- DACB

The correct answer is 'Period of poor performance'

Key Points

• The meaning of the idiom 'A lean patch' is- Period of poor performance. Or 'A period of failure, decline, or poor performance or results.'
• Let's see an example-
• Almost every new business experiences a lean patch at some point or another.
• Hence, the correct answer is Option 1.

The erroneous part is 'Your advices were timely'

Key Points

• In the given sentence, the usage of 'Advices were' is incorrect instead of it use 'advice was'
• According to grammar, 'Advice' is an uncountable noun (Abstract noun) hence, we cannot use it in the plural form so the correct use should be in the singular with the singular verb.
• In the given sentence, the speaker wants to say that the subject got his advice timely and guided him to take the right decisions.
• Let's see an example-
• My advice is to go by train.
• Hence, the correct sentence is- Your advice was timely and guided me to take the right decisions.

The correct answer is 'The car was driven towards the highway for a trial run by Ravi.'

Key Points

• The given sentence is in the passive voice.
• While changing the sentence into passive voice the main thing you have to keep in mind is the tense of the sentence because it doesn't change.
• In the given sentence, the tense of the sentence is in the past tense.
• Hence, the structure will be- was + V₃.
• Also, the object of the sentence will become the subject of the sentence. The object is 'The car' and the subject is 'Ravi'

Hence, the correct passive of the sentence is- The car was driven towards the highway for a trial run by Ravi.

The correct answer is 'BADC'

Key Points

• On reading the sentences, we can comprehend that the passage is all about checking the article before going live.
• The first sentence will be sentence B as it is the introduction of the passage because it tells that 'Encylopedia's' every article should be checked thoroughly.
• The second sentence will be sentence A as it uses a noun 'first' so it gives the hint of what will be the first step.
• The third sentence will be sentence D it tells who can be an author of the article given in Encyclopedia.
• The fourth sentence will be sentence C as it is the only sentence left.

So the correct passage is- Every article in the Encyclopedia goes through a rigorous editorial process to make sure it's clear, accurate, objective, and fair. First, a new article comes into our offices. The author may be an editor at the Encyclopedia who knows that subject or a prominent scholar with specialized expertise in that field. The article is first reviewed by a fact-checker, who uses a variety of sources to make sure the article is accurate and the facts are correct.

The correct answer is 'Chronology'

Key Points

• Let's see the meanings of the given words-
• Chronology- the arrangement of events or dates in the order of their occurrence. घटनाओं या तिथियों की व्यवस्था उनके घटित होने के क्रम में।
• Chronic- (of an illness) persisting for a long time or constantly recurring. (किसी बीमारी का) लंबे समय तक बना रहना या लगातार आवर्ती होना।
• Calendar- a chart or series of pages showing the days, weeks, and months of a particular year, or giving particular seasonal information. किसी विशेष वर्ष के दिनों, सप्ताहों और महीनों को दर्शाने वाला या विशेष मौसमी जानकारी देने वाला चार्ट या पृष्ठों की श्रृंखला।
• Routine- a sequence of actions regularly followed. क्रियाओं का एक क्रम नियमित रूप से पालन किया जाता है।
• Hence, according to the meanings of the given words, the correct answer is Option 1 i.e. Chronology.

The correct answer is 'The customer said to the bank manager, “Are you working next Saturday?”'

Key Points

• The given sentence is in Indirect speech.
• As the given sentence has 'if' it means the interrogative reported speech will be there in Direct speech.
• The pronoun will be used according to the object that is 'Bank manager' so the pronoun will be 'You'
• The tense will be the present continuous tense.
• The reporting verb 'asked' will be changed into 'said to'.

So the correct answer is- The customer said to the bank manager, “Are you working next Saturday?”

The correct answer is 'Composed'

Key Points

• Seychelles, one of the world’s smallest countries, is (1) ______ of two main island groups:
• Let's see the meaning of the given words-
• ​Composed- constitute or makeup (a whole, or a specified part of it).
• Contained- have or hold (someone or something) within.
• Covered- put something on top of or in front of (something), especially in order to protect or conceal it.
• Combined- join or merge to form a single unit or substance.
• According to the sentence, we need to use a word that means makeup because 'Seychelles' is made up of small islands.

Hence, the correct sentence is- Seychelles, one of the world’s smallest countries, is composed of two main island groups:

The correct answer is 'More'

Key Points

• the Mahé group of (2) ______ than 40 central, mountainous granitic islands
• In the given sentence, we need to use a determiner that means a greater or additional amount or degree of.
• Hence, the correct answer is Option 2 i.e. More.

So the correct sentence is- the Mahé group of more than 40 central, mountainous granitic islands

The correct answer is 'Second'

Key Points

• and a (3) ______ group of more than 70 outer, flat, coralline islands.
• As the first group of islands is The Mahe group it is already mentioned in the passage. So the second group has more than 70 outer, flat, coralline islands.
• So the correct answer is Option 4 i.e. Second.

Hence, the correct sentence is- and the second group of more than 70 outer, flat, coralline islands.

The correct answer is 'Typically'

Key Points

• The islands of the Mahé group are rocky and (4) ______ have a narrow coastal strip and a central range of hills.
• Let's see the meanings of the given words-
• Regularly- with a constant or definite pattern, especially with the same space between individual items.
• Typically- in most cases; usually.
• Routinely- as part of a regular procedure rather than for a special reason.
• Habitually- by way of habit; customarily.
• Hence, according to the meanings of the given words, the correct answer is Option 2 i.e. Typically.

So the correct sentence is- The islands of the Mahé group are rocky and typically have a narrow coastal strip and a central range of hills.

The correct answer is 'predominant'

Key Points

• The (5) ______ feature of those islands, with their lush tropical vegetation, is that of high-hanging gardens overlooking silver-white beaches and clear lagoons.
• Let's see the meanings of the given words-
• Collective- done by people acting as a group.
• Predominant- present as the strongest or main element.
• Global- relating to the whole world; worldwide.
• Wide- of great or more than average width.
• Hence, the correct answer is Option 2 i.e. Predominant.
• The sentence is talking about the strongest feature of the islands

Hence, the correct sentence is- The predominant feature of those islands, with their lush tropical vegetation, is that of high-hanging gardens overlooking silver-white beaches and clear lagoons.

The logic followed here is:

Given:

Sacred ∶ Profane → Profane is the antonyms of Sacred.

Similarly,

Barren ∶ Fertile → Fertile is the antonyms of Barren.

Hence, ‘Fertile’ is the correct answer.

he table is alphabets place value:

The pattern followed here is:

Given:

COMPETE ∶ OCETPME

Similarly,

EXTREME ∶ ?

Hence, 'EXTREME' is coded as "XEEMRTE".

Statements:

All bats are sticks.

All sticks are woods.

The least possible diagram for the given statements is as follows

Conclusions:

I. Some woods are not bats → False (Some woods not being bats is a possibility but it is not definite.)

II. All bats are woods → True (Because all bats are sticks and all sticks are woods so all bats are also woods)

Hence, “Only conclusion II follows” is the correct answer.

The embedded part of this image is:

Hence, option (2) is the correct answer.

The number of cubes in the given figure is:

So, there are a total of 12 cubes in the figure.

Hence, ‘12’ is the correct answer.

The Venn diagrams best represent the relationship between - Carnivorous, Frog, Amphibian figures are shown below:

All Frogs are Amphibian and carnivorous. some amphibians are carnivorous.

Hence, ‘option 4’ is the correct answer.

Given :- t _ f e t c _ _ _ c f e

By checking options and substituting accordingly.

Option (1) e c f t → t e f e / t c c f / t c f e

Option (2) t c f e → t t f e / t c c f / e c f e

Option (3) f e t c → t f f e / t c e t / c c f e

Option (4) c f e t → t c f e / t c f e / t c f e

• Option (4) gives a pattern of t c f e - t c f e - t c f e.

Hence, ‘c f e t’ is the correct answer.

The logic followed here is:

Given:

Hollow ∶ Worthless → Worthless is the synonyms of Hollow (adjective).

Similarly,

Solid ∶ Sound → Sound is the synonyms of Solid (adjective).

Hence, ‘Sound’ is the correct answer.

For this question, the relation is given below -

Logic: If two dice have the same two face value in the given image then the third number is opposite to each other.

In first dice and second dice.

Number 2 and 5 is common.

So, number 1 is opposite to 4.

Hence, the correct answer is “1”

The image obtained when the paper is unfolded is,

Hence, option 4 is the correct answer.

The logical and meaningful order of the given words is as follows:

LOGIC: The words have been arranged according to the stage create a building or houses etc.

3. Foundation → First we create the foundation of any structure.
4. Column → Then we stand column for structure.
5. Beam → Then we create a beam on a column.
6. Roof → After creating the basic structure we create a roof.
7. Canopy → We create a canopy that is above all of them.

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

Option (1) 98 ÷ 4 - 126 + 96 × 5 = 266

After interchange 8 and 2 and - and +.

92 ÷ 4 + 186 - 96 × 5 = 866

23 + 186 - 96 × 5 = 866

23 + 186 - 480 = 866

209 - 480 = 866

• 271 = 866 (LHS ≠ RHS)

Option (2) 98 ÷ 4 - 126 + 96 × 5 = 266

After interchange 6 and 4 and × and ÷.

98 × 6 - 124 + 94 ÷ 5 = 244

98 × 6 - 124 + 18.8 = 244

588 - 124 + 18.8 = 244

606.8 - 124 = 244

482.8 = 244 (LHS ≠ RHS)

Option (3) 98 ÷ 4 - 126 + 96 × 5 = 266

After interchange 5 and 8 and × and ÷.

95 × 4 - 126 + 96 ÷ 8 = 266

95 × 4 - 126 + 12 = 266

380 - 126 + 12 = 266

392 – 126 = 266

126 = 126 (LHS = RHS)

Option (4) 98 ÷ 4 - 126 + 96 × 5 = 266

After interchange 5 and 9 and + and ÷.

58 + 4 - 126 ÷ 56 × 9 = 266

58 + 4 – 2.25 × 9 = 266

58 + 4 – 20.25 = 266

62 – 20.25 = 266

41.75 = 266 (LHS ≠ RHS)

Hence, “Option (3)” is the correct answer.

The pattern followed here is:

 

Hence, '53' is the correct answer.

Table show alphabet serial number –

<br>

The pattern followed here is:

Sum of the opposite letters positional values + 1 = number.

TOGETHER is coded as 119

=> Sum of the opposite letters positional values + 1

= (7 + 12 + 20 + 22 + 7 + 19 + 22 + 9) + 1

= 118 + 1 = 119

And,

MASTER is coded as 87

=> Sum of the opposite letters positional values + 1

= (14 + 26 + 8 + 7 + 22 + 9) + 1

= 86 + 1 = 87

Similarly,

REVERSE is coded as

=> Sum of the opposite letters positional values + 1

= (9 + 22 + 5 + 22 + 9 + 8 + 22) + 1

= 97 + 1 = 98

Hence, REVERSE will be written as “98”.

Given:

Train A:

Speed = 90 km/h

Time at station Y = 8 a.m.

Train B:

Speed = 120 km/h

Time at station Y = 8.10 a.m.

Time at station Z = 8.40 a.m.

Total time taken from station Y to Z = 8.10 to 8.40 = 30 min = 0.5 hours

We know that,

=> Speed = Distance / Time

=> Speed of train B = (Distance from station Y to Z) / (Time taken from station Y to Z)

=> 120 = (Distance from station Y to Z) / 0.5

=> 120 × 0.5 = Distance from station Y to Z

=> Distance from station Y to Z = 120 × 0.5 = 60 km

Hence, distance between Stations Y and Z is “60 km”.

The logic followed here is:

All the given options except option (1), are the prime numbers whereas option 1 is not a prime number.

Option (1) 183 → It is not a prime number.

**Option (**2) 199 → It is a prime number.

**Option (**3) 163 → It is a prime number.

**Option (**4) 139 → It is a prime number.

Hence, “183” is an odd one.

The table is alphabets place value:

The pattern followed here is:

TRAILER is written as QPXGICO

Similarly,

'ALMIRAH' = ?

Hence, '​ALMIRAH' is coded as "XJJGOYE".

The logic followed here is:

Option (1) Confident → Confident is a positive attitude feeling.

Option (2) Honest → Honest is a positive attitude feeling.

Option (3) Intelligent → Intelligent is a positive attitude feeling.

Option (4) Coward → Coward is a negative attitude feeling.

Hence, All word are positive attitude feeling except coward.

Hence, “Coward” is an odd one.

The logic followed here is:

1^st number

2^nd number = 1^st number × 2 – (1^st number bigger digit – 1^st number smaller digit)

3^rd number = 2^nd number × 2 – (2^nd number bigger digit – 2^nd number smaller digit)

For 32 ∶ 63 ∶ 123

1^st number = 32

2^nd number = 1^st number × 2 – (1^st number bigger digit – 1^st number smaller digit)

= 32 × 2 – (3 - 2) = 64 – 1 = 63

3^rd number = 2^nd number × 2 – (2^nd number bigger digit – 2^nd number smaller digit)

= 63 × 2 – (6 - 3) = 126 – 3 = 123

Option 1 →  33 ∶ 66 ∶ 130

1^st number = 33

2^nd number = 1^st number × 2 – (1^st number bigger digit – 1^st number smaller digit)

= 33 × 2 – (3 - 3) = 66 – 0 = 66

3^rd number = 2^nd number × 2 – (2^nd number bigger digit – 2^nd number smaller digit)

= 66 × 2 – (6 - 6) = 132 – 0 = 132 ≠ 130

Option 2 → 35 ∶ 72 ∶ 149

1^st number = 35

2^nd number = 1^st number × 2 – (1^st number bigger digit – 1^st number smaller digit)

= 35 × 2 – (5 - 3) = 70 - 2 = 68 ≠ 72

3^rd number = 2^nd number × 2 – (2^nd number bigger digit – 2^nd number smaller digit)

= 68 × 2 – (8 - 6) = 136 – 2 = 134 ≠ 149

Option 3 → 26 ∶ 48 ∶ 92

1^st number = 26

2^nd number = 1^st number × 2 – (1^st number bigger digit – 1^st number smaller digit)

= 26 × 2 – (6 - 2) = 52 - 4 = 48

3^rd number = 2^nd number × 2 – (2^nd number bigger digit – 2^nd number smaller digit)

= 48 × 2 – (8 - 4) = 96 - 4 = 92

Option 4 → 26 ∶ 51 ∶ 100

1^st number = 26

2^nd number = 1^st number × 2 – (1^st number bigger digit – 1^st number smaller digit)

= 26 × 2 – (6 - 2) = 52 - 4 = 48 ≠ 51

3^rd number = 2^nd number × 2 – (2^nd number bigger digit – 2^nd number smaller digit)

= 48 × 2 – (8 - 4) = 96 - 4 = 92 ≠ 100

Hence, the correct answer is "26 ∶ 48 ∶ 92".

The logic followed here is:

The first number + (1^st digit of 1^st number + 2^nd digit of 1^st number) = 2^nd number.

For 56 ∶ 67

= 56 : 56 + (5 + 6)

= 56 : 56 + 11

= 56 : 67

Option 1 → 49 ∶ 58

= 49 : 49 + (4 + 9)

= 49 : 49 + 13

= 49 : 62 ≠ 58

Option 2 → 85 ∶ 98

= 85 : 85 + (8 + 5)

= 85 : 85 + 13

= 85 : 98

Option 3 → 63 ∶ 75

= 63 : 63 + (6 + 3)

= 63 : 63 + 9

= 63 : 72 ≠ 75

Option 4 → 76 ∶ 88

= 76 : 76 + (7 + 6)

= 76 : 76 + 13

= 76 : 89 ≠ 88

Hence, the correct answer is "85 ∶ 98".

Table show alphabet serial number –

The pattern followed is,

All follow the same pattern, except 'GDBY’.

Hence, "GDBY" is the odd one.

The figure that will replace the question mark (?) in the following figure series is shown below:

1. Lower left side small figure transfer to lower right side.

2. Lower right side small figure transfer to the middle.

3. Middle small figure transfer to the upper left side.

4. Upper left side small figure transfer to the upper right side.

5. Upper right side small figure transfer to lower left side.

Final series is

Hence, ‘option 2’ is the correct answer.

The Logic here is as follows:

1^st number

2^nd Number = (1^st Number) – (1^st number bigger digit – 1^st number smaller digit)

3^rd Number = (2^nd Number) – (2^nd number bigger digit – 2^nd number smaller digit)

In (92, 85, 82)

1^st number = 92

2^nd Number = 92 – (9 - 2) = 92 – 7 = 85

3^rd Number = 85 – (8 - 5) = 85 – 3 = 82

Now check the all options,

Option (1) (69, 66, 62)

1^st number = 69

2^nd Number = 69 – (9 - 6) = 69 – 3 = 66

3^rd Number = 66 – (6 - 6) = 66 – 0 = 66 ≠ 62

Option (2) (83, 78, 77)

1^st number = 83

2^nd Number = 83 – (8 - 3) = 83 – 5 = 78

3^rd Number = 78 – (8 - 7) = 78 – 1 = 77

Option (3) (28, 23, 21)

1^st number = 28

2^nd Number = 28 – (8 - 2) = 28 – 6 = 22 ≠ 23

3^rd Number = 22 – (2 - 2) = 22 – 0 = 22 ≠ 21

Option (4) (71, 65, 62)

1^st number = 71

2^nd Number = 71 – (7 - 1) = 71 – 6 = 65

3^rd Number = 65 – (6 - 5) = 65 – 1 = 64 ≠ 62

Hence, the correct answer is "(83, 78, 77)".

The correct mirror image of the given figure when the mirror is held at the right side is:

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

Additional Information

In Mirror image left side and right side changed vice-versa where top and bottom remain same.

Reflection of an object into the water is its water image. It appears by inverting an object vertically i.e. upside down.

The water image of the figure looks like the mirror image of the figure in case the mirror is horizontally at the bottom of the figure.

Water image is just a reflection where top and bottom part of the images changed where left and right side of the image remain same.

Preparing the family tree using the following symbols,

Given:

Sunaina introduced Ritik as the son of the brother of her mother.

We can draw the following Family Tree from the information given above:

Hence, Ritik is the "cousin" of Sunaina.

Given:

a + b + c = 11 and ab + bc + ca = 15 

Concpet used:

a³ + b³ + c³ – 3abc = (a + b + c)[(a + b + c)² – 3(ab + bc + ca)]

Calculation:

a3 + b3 + c3 - 3abc = [11{(11)² - 3 × 15}]

⇒ [11{121 – 3 × 15]

⇒ [11{121 – 45}]

⇒ 11 × 76

⇒ 836

∴ Required answer is 836

Given:

Working together A, B and C can complete a piece of work in 3 days.

A complete the same work in 24 days.

B alone can complete the work in 6 days.

Concept Used:

Total work = LCM of time taken by the workers

Calculation:

LCM of 24 and 6 = 24

Efficiency of A = 24/24 = 1 unit per day.

Efficiency of B = 24/6 = 4 unit per day.

Efficiency of all three = 24/3 = 8 unit per day.

So, efficiency of C = 8 - 5

⇒ 3

Time taken by C to complete the work = 24/3 = 8 days.

∴ C alone take 8 days to complete the same work.

Given:

Volume of a right circular cone is 462 cm³.

Height = 12 cm.

Concept used:

Volume of a cone = 1/3 × π × r² × h

Area of base = π × r²

Calculation:

1/3 × π × r² × h = 462

⇒ 1/3 × π × r² × 12 = 462

⇒ π × r² = 462/4 = 115.5

∴ Area of its base (in cm²) = 115.5

Shortcut Trick In the questions of area and volume. The answer must be divided by 11.

Only 115.5 is divisible by 11.

∴ Area of its base (in cm2) = 115.5

Given:

QT ⊥ PR and S is a point on QR.

∠TQR = 44° and ∠SPR = 32°

Concept used:

Sum of angle of a triangle is 180°

Vertically opposite angles are angles that are opposite one another at a specific vertex and are created by two straight intersecting lines.

Calculation:

Let PS and QT intersect each other at O.

Now, ∠QTP = 90° 

So, ∠POT = (180 – 32 - 90) = 58° 

We know that, ∠POT = ∠QOS 

Again, In ΔQOS 

⇒ 44 + p + 58 = 180

⇒ p = 180 – 102 = 78° 

∴ Value of p is 78°.

Given:

a + b + c = 5, a² + b² + c² = 27 and a³ + b³ + c³ = 125

Concept used:

a² + b² + c² = (a + b + c)² - 2(ab + bc + ca)

a³ + b³ + c³ - 3abc = (a + b + c)(a² + b² + c² - ab - bc - ca)

Calculation:

27 = 5² - 2(ab + bc + ca)

⇒ ab + bc + ca = -1

Now,

a³ + b³ + c³ - 3abc = [(a + b + c){a² + b² + c² - (ab + bc + ca)}]

⇒ 125 - 3abc = (5){27 - (-1)}

⇒ 3abc = 125 - 140

⇒ 3abc = -15

⇒ abc = -5

∴ The value of abc/5 is -1

Given:

4y6884805x6 is divisible by 72

Concept used:

Divisibility rule for 8 → If the last three digits of a number are divisible by 8, then the number is completely divisible by 8.

Divisibility rule for 9 → If the sum of digits of the number is divisible by 9, then the number itself is divisible by 9

Calculation:

5x6 must be divisible by 8

Only possible value of x is 3

Now, 4 + y + 6 + 8 + 8 + 4 + 8 + 0 + 5 + 3 + 6

⇒ 52 + y is divisible by 9

So, y = 2

Now, √(3 × 2)

⇒ √6

∴ Required answer is √6

Confusion PointsIf we take y = 7, then x will also be 7 and there is a condition given in the question that x cannot be equal to y.

Let's understand:

Let y = 7

576 will be divisible by 8.

Now, we will check the divisibility of 3.

Now, 4 + y + 6 + 8 + 8 + 4 + 8 + 0 + 5 + 7 + 6

⇒ 56 + y is divisible by 9

So, y = 7

But according to the condition, x ≠ y.

Thus, 3 is the correct value of y.

Concept used:

One complete circle = 360°

Calculation:

In this question the given value of total expenditure is of no use as the percentage of expenditure is asked.

Degree of cost for cement = 72°

So, percentage of expenditure on cement = 72/360 × 100 = 20%

∴ The percentage of expenditure on cement is 20%.

Given:

(1 + cot2θ) + (1 + (cot2θ)-1) is equal to k

Concept used:

sin²θ + cos²θ = 1

Calculation:

(1 + cot²θ) + (1 + (cot²θ)^-1) = k

⇒ cosec²θ + (1 + tan²θ) = k

⇒ cosec²θ + sec²θ = k

⇒ 1/sin²θ + 1/cos²θ = k

⇒ (sin²θ + cos²θ)/sin²θcos²θ = k

⇒ k = 1/sin²θcos²θ

⇒ √k = 1/sinθcosθ

⇒ √k = cosecθsecθ

∴ The value of √k is cosecθsecθ

Given:

(x - 1.5)³ + (x - 4)³ + (x - 3.5)³ = 3 (x - 1.5) (x - 4) (x - 3.5)

Concept used:

If a³ + b³ + c³ = 3abc then (a +b + c) = 0

Calculation:

According to the concept

(x - 1.5) + (x - 4) + (x - 3.5) = 0

⇒ 3x - 9 = 0

⇒ 3x = 9

⇒ x = 3

∴ The value of x is 3

Given:

Total students = 80

60% are girls

The average weight of boys is 58 kg and the average weight of girls is 52 kg.

Concept Used:

Average weight = (Sum of the weight of all the students/Total no. of students)

Calculation:

Number of girls = 80 × (60/100) = 48

Number of boys = (80 - 48) = 32

Now average weight of whole class = ((32 × 58) + (48 × 52))/80 = 4352/80 = 54.4

∴ The average weight (in kg) of the whole class will be 54.4.

Given:

3cosθ = 2sin²θ

Concept Used:

Sin²θ + Cos²θ = 1

Calculation:

3cosθ = 2sin²θ

⇒ 3cosθ = 2(1 - cos²θ)

⇒ 2cos²θ + 3cosθ - 2 = 0

⇒ 2cos²θ + (4 - 1)cosθ - 2 = 0

⇒ 2cos²θ + 4cosθ - cosθ - 2 = 0

⇒ 2cosθ (cosθ + 2) - 1(cosθ + 2) = 0

⇒ (2cosθ - 1) (cosθ + 2) = 0

⇒ (cosθ + 2) = 0 and (2cosθ - 1) = 0

⇒ cosθ = -2 (Not Possible)

⇒ (2cosθ - 1) = 0

⇒ cosθ = 1/2

So, θ = 60°

Now, (tan²60° + sec²60° - cosec²60°)

= ((√3)² + 2² - (2/√3)² )

= (3 + 4 - 4/3)

= (7 - 4/3)

= 17/3

∴ The value of (tan²θ + sec²θ - cosec²θ) is 17/3

Concept used:

cosec²θ - cot²θ = 1

sin²θ + cos²θ = 1

Calculation:

cot²46° - sec²44° + (sin²1° + sin²3° + sin²5° + ..... + sin²89°)

= cot²46° - sec²(90 - 46) + (sin²1° + sin²3° + sin²5° + ....... + sin²45° + ....... + sin²85° + sin²87° + sin²89°)

= cot²46° - cosec²46° + {sin²1° + sin²3° + sin²5° + ....... + sin²45° + ....... + sin²(90 - 5)° + sin²(90 - 3)° + sin²(90 - 1)°}

= -1 + sin²1° + sin²3° + sin²5° + ....... + sin²45° + ....... + cos²5° + cos²3° + cos²1°

= -1 + sin²1° + cos²1° + sin²3° + cos²3° + sin²5° + cos²5° + .......... sin²43°+ cos²43° + sin²45°

From 1° to 43°  there are 22 such odd pairs.

= -1 + 22(1) + 1/2 (as sin²θ + cos²θ = 1)

= 21.5

∴ The required value is 21.5

Given:

The selling price of a car = Rs 632500

Profit = 15%

Concept Used:

Profit% = ((S.P – C.P)/C.P) × 100%

Calculation:

Let C.P of the car be Rs. 100x.

According to the question,

100x + 15x = 632500

⇒ 115x = 632500

⇒ x = 632500/115 = 5500

⇒ 100x  = 550000 = CP

New S.P = 8,10,000

So, profit % = ((810000 - 550000)/550000) × 100%

⇒ (260000/550000) × 100%

⇒ 47.27% = 47.3%(Approx.)

∴ The profit percentage will be 47.3%

Given:

First and third proportional = 1.2 and 10.8

First and second proportional = 0.2 and 1.2

Concept used:

If a, b and c are in proportion then:

Mean proportional:

⇒ b² = a × c

Third proportional:

⇒ c = b²/a

Calculation:

Let mean proportional be x and third proportional be y.

⇒ x² = 1.2 × 10.8

⇒ x = 3.6

Again, 

⇒ y = (1.2)²/0.2 = 7.2

Now, ratio of x to y = 3.6 : 7.2 = 1 : 2

∴ Ratio of mean proportional to the third proportional will be 1 : 2

Given:

In a trapezium ABCD, DC || AB

AB = 16 cm and DC = 11.2 cm

Concept:

The line joining the midpoints of two diagonals of a trapezium = Difference of length of parallel side/2

Calculation:

In the above figure, AB and CD are the parallel sides and M_1,M₂ are the midpoints of the diagonal AC and BD

So, M₁M₂ = (AB – CD)/2

= (16 – 11.2)/2

= 4.8/2 = 2.4 cm

∴ The length of the line segment joining the midpoints of its diagonals is 2.4 cm

Given:

A man covers 5/12 of a total journey by train,

7/18 of the journey by bus and the remaining 7 km on foot

Calculation:

LCM of 12 and 18 is 36

Let the total journey be 36x

Now,

Distance covered by train =  5/12 × 36x = 15x

Distance covered by bus = 7/18 × 36x = 14x

Remaining distance which is covered by foot = (36x – 15x – 14x) = 7x

According to the question,

7x = 7

⇒ x = 1

So, total journey = 36x = 36 × 1 = 36 km

∴ His total journey (in km) is 36 km.

Calculation:

Number of persons of age less than 15 years = 2 + 7 + 6 = 15

Number of persons of age less than 30 years = 2 + 7 + 6 + 7 + 9 + 4 = 35

Their ratio = 15 : 35 = 3 : 7

∴ The required ratio is 3 : 7

Given:

The sides AB, BC and AC of ΔABC are 12 cm, 8 cm and 10 cm.

A circle is inscribed in the triangle touching AB, BC and AC at D, E and F.

Concept Used:

Length of tangents from a fixed point outside the circle is always same.

Calculation:

Let length of AD = AF = x

Length of BD = BE = y

And length of CE = CF = z

Now,

2 × (x + y + z) = (12 + 8 + 10)

⇒ x + y + z = 15

Again,

AB = (x + y) = 12 cm

BC = (y + z) = 8 cm

CA = (x + z) = 10 cm

Now, x = (x + y + z) – (y + z) = 15 – 8 = 7 cm

z = (x + y + z) – (x + y) = 15 – 12 = 3 cm

AD : CE = 7 : 3

∴ Ratio of the lengths of AD to CE is 7 : 3

Given:

Markup% = 25%

She sells 25% of the goods at the marked price

60% at 25% discount and the remaining at 10% discount.

Concept used:

SP = MP – MP × Discount%

SP = CP + CP × Profit%

SP = CP – CP × loss%

Calculation:

Let the total number of goods be 100x and cost price of each goods be 100y

Total CP = 10000xy

Marked Price of each goods = 100(1 + 25%) = 125y 

SP of 25x goods = 25x × 125y = 3125xy

SP of 60x goods = 60x × 125y(1 – 25%) = 5625xy

SP of remaining (100x – 25x – 60x = 15x goods) = 15x × 125y(1 – 10%) = 1687.5xy

Total SP = 3125xy + 5625xy + 1687.5xy = 10437.5xy

Profit = 10437.5xy - 10000xy = 437.5xy

Profit% = 437.5xy/10000xy × 100 = 4.375%

∴ His overall gain% is 4.375%

Given:

Price of an item was reduced by 20%

Sales increased by x%

Concept used:

Total Revenue = Total sales × Price of each item

Calculation:

Let total sales be 100a and price of each item be 100b

So, Total Revenue = 10000ab

Price after 20% reduction = 80a

10000ab(1 + 25%) = 80b × 100a(1 + x%)

⇒ 12500ab = 8000ab × (100 + x)/100

⇒ 1250/8 = 100 + x

⇒ 8x = 450

⇒ x = 56.25%

∴ The value of x is 56.25%

Shortcut Trick

Since Simple Interest is constant every year, SI for 3 years = Amount₄ − Amount₁

⇒ 3 years SI = 7563.20 − 6240.80 = ₹1322.40

⇒ 1 year SI = 1322.40 ÷ 3 = ₹440.80

⇒ Principal = 6240.80 − 440.80 = ₹5800

⇒ Rate = (440.80 ÷ 5800) × 100 = 7.6%

∴ The correct answer is ₹5800, 7.6%.

Alternate Method

Given:

Amount after 1 year (A₁) = ₹6240.80

Amount after 4 years (A₄) = ₹7563.20

Formula Used:

Simple Interest (SI) = (P × R × T) ÷ 100

Amount (A) = P + SI

Calculations:

⇒ SI for 3 years = A₄ − A₁

⇒ SI for 3 years = 7563.20 − 6240.80 = 1322.40

⇒ SI for 1 year = 1322.40 ÷ 3 = 440.80

⇒ Principal (P) = A₁ − SI for 1 year

⇒ P = 6240.80 − 440.80 = 5800

⇒ Rate of Interest (R) = (SI for 1 year × 100) ÷ P

⇒ R = (440.80 × 100) ÷ 5800

⇒ R = 44080 ÷ 5800 = 7.6%

∴ The correct answer is ₹5800, 7.6%.

Additional Information

Simple Interest vs Compound Interest

In Simple Interest, the principal remains constant every year, meaning the interest generated is the same annually. In Compound Interest, the accumulated interest of past periods is added to the principal to form the base for the next period.

Principal from Amounts Rule

If a principal becomes A₁ in T₁ years and A₂ in T₂ years under Simple Interest, the principal can be directly calculated as P = A₁ − [ (A₂ − A₁) ÷ (T₂ − T₁) ] × T₁.

Constant SI Property

Since Simple Interest does not compound, the interest accrued over any N-year period is always directly proportional to N, making it uniformly additive.

Calculation:

Total exports in the five years = 400 + 450 + 600 + 440 + 650 = 2540

Average export per year = 2540/5 = 508

80% of the Average export = 80% of 508 = 406.4

So we can see that in the years 2013 and 2014, the imports are 330 and 360 i.e below 406.4

∴ In 2 years the imports were less than 80% of the average exports

Given:

The Radii of the two circles are 18 cm and 12 cm.

The length of their common chord is 16 cm.

Concept used:

A line that is drawn perpendicular to the chord from the center of a circle always bisects the chord.

H² = B² + P²

Calculation:

At first join O, P and A 

Now, OBA is a right angle triangle and PBA is also a right angle triangle.

Length of AB = AC/2 = 16/2 = 8 cm.

Again, OB² = 18² – 8² = 260

⇒ OB = √260 = 2√65  

And BP² = 12² – 8² = 80

⇒ BP = 4√5

Now distance between their centres is OP = OB + BP

⇒ OP = 2√65 + 4√5

⇒ OP = 2√5(2 + √13)

∴ Distance (in cm) between their centers is  2√5(2 + √13)

Calculation:

Total target production of ACs in February, March, April and May = 30 + 80 + 90 + 100 = 300(in thousands)

Total actual production of ACs over five months = 70 + 50 + 100 + 80 + 120 = 420(in thousands)

Their difference = 420 – 300 = 120

Required % = 120/420 × 100 = 28.57% ∼ 28.6%

∴ The required % is 28.6%

Given:

$\frac{775 \ × \ 775 \ × \ 775 \ + \ 225 \ × \ 225 \ × \ 225}{77.5 \ × \ 77.5 \ + \ 22.5 \ × \ 22.5 \ - \ 77.5 × \ 22.5}$

Concept used:

(a3 + b3) = (a + b)(a2 + b2 - ab)

Calculation:

Let 775 be a and 225 be b

So,

$\frac{775 \ × \ 775 \ × \ 775 \ + \ 225 \ × \ 225 \ × \ 225}{77.5 \ × \ 77.5 \ + \ 22.5 \ × \ 22.5 \ - \ 77.5 × \ 22.5} = \frac{a^3;\ +;b^3}{\frac{a^2}{100} + \frac{b^2}{100} ; - \frac{;a × b}{100}}$

⇒ [(a³ + b³) × 100]/(a² + b² - ab)

⇒ [(a + b)(a2 + b2 - ab) × 100]/(a2 + b2 - ab)

⇒ (a + b) × 100

⇒ (775 + 225) × 100

⇒ 1000 × 100

⇒ 100000

∴ The required answer is 100000

Shortcut Trick  1/.01 = 100, Take 100 as common then write in this form

  [a3 + b3]/(a2 + b2 - ab) = a + b

100(775 + 225) = 100000

The correct answer is Odisha.

• In December 2020, the Chief Minister of Odisha announced that India's biggest hockey stadium is being set up in the state.​

Key Points

• The Chief Minister of Odisha Shri Naveen Patnaik announced a new world-class hockey stadium in Biju Patnaik University of Technology campus, Rourkela city
• It would be the biggest stadium of Hockey in India with a sitting capacity of 20 thousand.
• Other stadiums in Odisha: Birsa Munda International Hockey Stadium(20,000 capacity), Rourkela and Kalinga Stadium, Bhubaneshwar.
• These two stadiums will be the host venues for Men's Hockey World Cup 2023.

Additional Information

• National Hockey Stadium, Lahore, Pakistan is the world's biggest stadium(45,000 capacity).
• Birsa Munda International Hockey Stadium(20,000 capacity) is expected to  open in July 2022 in India's biggest Hockey Stadium.

The correct answer is physiological density.

• The total population per net cultivated area of a country refers to its physiological density.​

Key Points

• Physiological density or Real Population density is the number of people per unit area of arable land.
• A higher physiological density suggests that the available agricultural land is being used by more and may reach its output limit sooner than a country that has lower physiological density.
• ​Egypt is a notable example of physiological density reaching that of Bangladesh despite much desert.
• It measure is helpful while studying population pressure and overcrowding.

Additional Information

• Agricultural density: is the number of farmers per unit area of farmland.
• ​It is one of the three measures of statistical analysis for population density in Demography
• It is useful in recognizing trends in population growth, development and stability.
• Livestock density: It is defined as the ratio of total livestock to total utilised agriculture area of a farm, region or country.​
• ​It is an indicator of the intensity of Live Stock production.
• ​Population density: It is the measurement of population per unit area or unit volume.
• ​It is frequently applied to living organisms mostly Humans.

The correct answer is Pankhida.

• Peasants of Rajasthan sing Pankhida while working in fields.​

Key Points

• Pankhida: The meaning of the pankhida is lover.
• Pankida a folk music tradition sung by the peasants of Rajasthan while working in fields they sing and speak while playing algoza and manjira.
• Algoza is a paired woodwind instrument.
• Manjira is a traditional hand percussion instrument of India.

Additional Information

The correct answer is Uttar Pradesh.

• Uttar Pradesh state launched India's and South-Asia's first blockchain-enabled rooftop solar trading platform in December 2020.​

Important Points

• Uttar Pradesh launched India's and South-Asia's first blockchain-enabled peer-peer rooftop solar trading platform for rooftop solar producers in Lucknow on December 17 2020.
• The pilot project will be implemented by India Smart Grid Forum, Power Ledger(Australia based  Blockchain technology partner), Abajyon consulting.
• Trading of energy generated from Rooftop solar powers installed in buildings will be facilitated.
• Functions of the platform: Fixing prices, buying and selling of energy, settlement of surplus solar energy transactions.

The correct answer is Telangana.

• Telangana state was NOT formed in the year 2000.​

Key Points

• Telangana was India's 29th state that was formed on June 2^nd 2014.
• The genesis for the formation of the Telangana state dates back to several movements that occurred in 1969,1972,2009.
• In the 21st century the movement for a new Telangana state gained momentum by an initiative of the Telangana Political Joint Action Committee(TJAC).
• In 2010 Srikrishna committee was formed to find a solution for the issue, it recommended united Andhra Pradesh.
• Union cabinet approved a bill for the bifurcation of the state.
• Andhra Pradesh Reorganisation Bill was passed in 2014 with Hyderabad as common capital.

Additional Information

• Uttarakhand state is also known as Uttaranchal was formed on 8th November 2000.
• It is referred to as Devbhumi due to its religious significance.
• ​​The state was formed from northwestern districts of Uttar Pradesh
• Jharkhand the 15th largest state by area was formed on 15th November 2000.
• It is known as the Land of the forest.
• It was previously a part of Bihar.
• ​Chhatisgarh a landlocked state is located in central India.
• ​It was granted statehood on 1st November 2000.
• It was formerly a part of Madhya Pradesh.

The correct answer is Krishnadeva Raya.

• Krishnadeva Raya belonged to the Tuluva dynasty.​

Key Points

• Tuluva dynasty is the third dynasty of the Vijayanagara empire the other three are Sangama, Saluva, Aravidu dynasties.
• Krishnadevaraya was the second son of Tulva Narasa Nayaka.
• He ruled the largest empire after the decline of the Delhi Sultanate.
• Titles: Andhra Bhoja, Kannada Rajya Rama Ramana, Dakshinasamudradhishwara.
• Foriegn Travellers: Domingo Paes, Fernao Nuniz both are from Portugese.
• Note: His reign is considered as Telugu Literature. Eight Telugu known as Ashtadigajjas were considered as pillars of his literary assembly.

 Additional Information

• Simha Vishnu is one of the kings of the Pallava Dynasty.
• ​He was the first Pallava monarch whose kingdom extended beyond Kanchipuram.
• ​Vishnuvardhana belonged to Hoysala Empire.
• ​Originally a follower of Jainism converted into Hinduism under the influence of Ramanujacharya.
• ​Pushyamitra Sunga was the founder of the Sunga Empire.
• ​​His history is recorded in Harshacharita authored by Banabhatta.

The correct answer is Anju Bobby George.

• Anju Bobby George won a bronze medal at the World Athletics Championship in Paris in 2003.​

Key Points

• Anju Bobby George is an Indian retired athlete.
• ​She won the bronze medal in the long jump.
• she became the first Indian athlete to win a medal in World Championships in Athletics
• Awards: Arjuna, Khel Ratna, Padma Shri, BBC Lifetime achievement award.​

Additional Information

• PT Usha who hails from Kerala is an Indian track and field athlete.
• ​She is known as "Queen of Indian track and field"
• She was awarded Padma Shri in the year 1985.
• ​Seema Punia is an Indian Disc thrower.
• ​She is known as Millennium Child".
• She won the gold medal at the 2000 World Junior Championships.
• ​Krishna Poonia is an International gold medalist, disc thrower, Indian track and field athlete, participated in Olympics twice.
• ​Awards: Arjuna, Padma Shri​

The correct answer is Gujarat

• Shatrunjaya Hills is located in Gujarat.​

Important Points

• Shatrunjaya(place of victory against inner enemies) hills are located by the city Palitana, in Bhavanagar district, Gujarat India.
• They are situated on the banks of the river Shetrunji.
• It is the most sacred place for Jains.

Additional Information

The correct answer is Virat Kohli.

• Virat Kohli won the Sir Garfield Sobers Award for ‘ICC Male Cricketer of the Decade’ in December 2020.​

Key Points

• Virat Kohli is an Indian International cricketer.
• He holds the world record of being the fastest to 23,000 international runs.

Additional Information

The correct answer is Lucknow.

• Rumi Darwaza is located in Lucknow.​

Key Points

• Rumi Darwaza is also known as the Turkish gate was built by Nawab-Asaf-Ud-Daula,
• It was built in the year 1784.
• The sixy feet massive gate is situated between Bara imambara and Chota Imambara.
• It is an example of Awadhi architecture.
• Awadhi school of architecture is an attempt to preserve the Mughal school of architecture

The correct answer is Extension.

• The Extension is a three or four-letter abbreviation that signifies the file type.​

Key Points

• A file extension is a suffix to the name of the computer file.
• The extension indicates the characteristic of the file contents.
• It is the ending of a file that helps identify the type of file in operating systems.
• In Microsoft Windows, the file name extension is a period that is often followed by three characters but may also be one, two, or four long

Important Points

• A computer virus is a type of computer program that when executed replicates itself by modifying other computer programs and inserting its code.
• If this replication succeeds the affected areas are then said to be infected with a computer virus.
• They generally require a host program.
• When the program runs the program is executed first causing infection and damage.

The correct answer is Al-Biruni.

• Al-Biruni is a traveller who came to India from Uzbekistan in the 11th century.

Key Points

• Al-Biruni was a Khwarazmian Iranian scholar and polymath during the Islamic golden age.
• He is well versed in physics, mathematics, astronomy, natural science.
• Work: Kitab-al-Tafhim.

Important Points

The correct answer is Rice.

• Rice crops are grown throughout the year in the southern states of India.​

Key Points

• Rice is a Kharif crop.
• Rice growing in India varies for different parts of the country based on the varying altitude and climate.
• Factors of growth: Temperature, rainfall, soil types, water availability.
• Since a mean temperature is found in the eastern and western regions which are favourable for rice cultivation it is grown throughout the year.
• In northern and western parts only one crop is grown owing to high rainfall and low winter temperature from May to November.

Additional Information

The correct answer is Bandhavgarh Tiger Reserve.

• In Bandhavgarh Tiger Reserve the first hot air balloon wildlife safari launched in India in December 2020.

Key Points

• India's first air balloon wild safari was launched in Tiger reserve Madhya Pradesh.
• Bandhavgarh Tiger Reserve is located in Umaria district, Madhya Pradesh.
• It is known for its royal population of royal bengal tigers.
• It consists of three main zones Tala, Madadhi,Kitauli.​
• Tala zone has a rich biodiversity.

Additional Information

The correct answer is Lead-acid cell.

• The lead-acid cell is NOT used in watches.
• It is one of the oldest rechargeable batteries.
• They are known as secondary batteries.
• The chemical reactions that occur in secondary cells are reversible.

Key Points

The correct answer is Jennifer A Doudna and Emmanuelle Charpentier.

• Jennifer A Doudna and Emmanuelle Charpentier were awarded the Nobel Prize in Chemistry 2020 for their exemplary work in genome editing.

Important Points

• Genome editing is the technology that allows the addition, alteration and removal of genetic material at particular locations in the genome.
• Specific changes in the DNA of a cell or organism are made.
• Clustered Regularly Interspaced Short Palindromic Repeats(CRISPR) technology is a gene-editing technology that can be used for the purpose of changing the genome of an Organism.
• French American Duo was awarded the Nobel Prize in Chemistry 2020 for the chemistry of CRISPR.
• Cas9 is a special protein known as a genetic scissor which is used to break and remove the problematic sequence.

Additional Information

• Nobel prize in chemistry
• George P Smith and Sir Gregory P Winter have been awarded in 2018 " for the directed evolution of enzymes"
• Nobel prize in Physiology or Medicine
• ​James P Allison and Tasuku Honjo have been awarded in 2018 for" their discovery of cancer therapy by inhibition of negative immune regulation"
• ​Nobel prize in Physics
• ​Gerard Mourou and Donna Strickland have been awarded in 2018 for  "groundbreaking interventions in the field of laser Physics"

The correct answer is Force.

Key Points

• Torsion balance is an instrument used to measure small forces.
• It is based on the principle that a wire or thread resists twisting with a force that is proportional to the stress.
• It is used to measure the gravitational acceleration at the Earth's surface.

Additional Information