SSC CHSL Previous Paper 38 (Held On: 21 March 2018 Shift 1) (Previous Year Paper)

The correct answer is 1

Key Points

Reading the above sentence, we find that:

• The sentence is in the past tense, as we can figure out from the word enveloped.
• Therefore the verb look should be changed to looked, which is the past tense form of look.
• Thus from the given points, we can infer that the error lies in the 1st part of the sentence.

Therefore the correct answer is 1. 

The correct answer will be: I looked up after the blast of light had enveloped the park.

The correct answer is 2.

Key Points

Reading the above sentence we find that: 

• The word while is incorrectly used.
• While is a noun that means a period of time.
• It can also be used as a conjunction and as an adverb with the same meaning.
• Instead, we should use a pronoun that is used to refer to something previously mentioned.
• Which is a pronoun that is used to refer to something previously mentioned.
• Thus from the above points we can conclude that the error lies in part 2 of the sentence.

The correct sentence will be: According to the Copernican principle, the Earth does not occupy a unique position in the Universe which implies life on other plants can be a possibility.

The correct answer is "Coming of"

Key Points

• Let's look at the meaning of the correct option.
• Coming of when coupled with the word 'age' becomes a very commonly used phrase in the English Language.
• Coming of age: used to describe a young person's transition from being a child to being an adult.  
• Example - The movie is a coming of age story about a girl coping with the awkwardness of high school.
• From the above points, we see how coming of age is the most appropriate phrase given the context of the sentence.

Therefore the correct option is option 3.

The correct answer is permanent.

Key Points

Let's look at the meaning of the given options. 

• Imminent: About to happen.
• Deponent: Passive or middle in form but active in meaning.
• Remnant: A part or quantity that is left after the greater part has been used.
• Permanent: Lasting or intended to last or remain unchanged indefinitely

Out of the given meanings, only the meaning of the word permanent is appropriate regarding the context of the sentence.

The correct sentence: The love which is based on physical beauty is not permanent.

The correct answer is Pacify. 

Key Points

Let's look at the meaning of the given word and the correct option. 

• Mollify: To calm; quieten; reduce the severity of.
• Pacify: To make calm.

Thus from the given meanings, we find that both words express the same meaning.  

Therefore the correct is Pacify. 

Additional Information

Let's look at the meaning of the other given options. 

• Agitate: Make someone troubled or nervous.
• Provoke: Stimulate or give rise to (a reaction or emotion, typically a strong or unwelcome one) in someone.
• Worry: Feel or cause to feel anxious or troubled.

The correct answer is Appeal. 

Key Points

Let's look at the meaning of the given word and the correct option. 

• Importune: To ask someone for something or ask someone to do something, in an annoying way.
• Appeal: Serious urgent or heartfelt request.
  

Thus, from the above points, we find that both the word express the meaning of asking for something, albeit in two different ways. 

Additional Information

Let's look at the meaning of the other given options. 

• Important: Of great significance or value.
• Imply: Indicate the truth or existence.
• Purchase:  Acquire by paying for it.

The correct answer is Rotund

Key Points

Let's look at the meaning of the given word and the correct answer. 

• Rotund: Large and plump.
• Slim: Gracefully thin; slender.

Thus from the above meanings, we find that both the words express the opposite meaning.   

Thus the correct answer is Slim. 

Let's look at the meaning of the other given options. 

• Fat: Having a large amount of excess flesh.
• Broad: Large in area, covering a large area.
• Dumpy: Short and stout (with respect to a person.)

The correct answer is Modest.

Key Points

Let's look at the meaning of the given word and the correct option. 

• Flamboyant: Tending to attract attention because of their exuberance.
• Modest: Relatively moderate.

Thus from the above meanings, we find that both the words express the opposite meanings.  

Additional Information

Let's look at the meaning of the other given options. 

• Glamorous: The quality of being alluring; fascinating and charming.
• Colourful: Having much or varied colour.
• Sporty: Casual yet attractively stylish.

Equity = fairness. Where can you bring fairness? R must be first as access to doctors and medicines aptly fits the context. Rule out 1) and 3). Q can't be next as medicines a priority for will be grammatically incorrect especially since there is no comma after medicines. Option 4) RPQ is the correct answer.

Bringing equity in access to the doctors and medicines for the rural population should be a priority for the National Health Mission.

The correct answer is A rat was caught by the cat. 

Key Points

While changing an active voice to a passive voice:

• The object of the active voice becomes the subject of the passive voice and vice versa.
• Here the object rat becomes the subject.
• And the subject cat becomes the object.
• The sentence is given in the simple past tense and it will change to was/were + past participle.
• Thus the sentence becomes A rat was caught by the cat.

Thus from the above-given points, we can infer that the correct answer is A rat was caught by the cat.

Has => had in reported speech => rule out 3) and 4). With had, we always use the verb in its original form i.e simple present form. Come. Option 2)  The wolf cried out to the hound that a thought had just come into his head is the correct answer.

The correct answer is Category. 

Key Points

Looking at the given options we find that:

The only correctly spelt word is Category.

• Category: The class or division of things regarded as having particular shared characteristics.
• Example: The various categories of research.

Thus from the given points, we can conclude that the correct answer is Category.

The correct answer is closely. 

Key Points

Reading the given sentence we find that:

• The blank should be filled with an adverb that will give more meaning to the verb examine.
• Out of the given options, only option 1 is an adverb.
• Thus the correct answer here will be closely.
• It tells us that facts are to be examined closely i.e with more detail.

Thus from the above points, we can conclude that the correct answer is closely. 

Additional Information

Adverb: A word or phrase that modifies or qualifies an adjective, verb, or other adverb or a word group, expressing a relation of place, time, circumstance, manner, cause, degree, etc.

The correct answer is than. 

Key Points

Reading the given sentence we find that: 

• A comparison is made here using more.
• Than is a preposition that is used in comparison.
• Than: used to introduce the second element in comparison.
• Example: They go out less than they did when they were in Paris.

Therefore, from the given points we can conclude that the correct answer is than.

The correct answer is in

Key Points

Reading the given sentence we find that: 

• The sentence must contain a preposition since it has to define a relation between the sun and sky.
• Since we are looking for a preposition the word inner can be ruled out as it is an adjective.
• We can also rule out inside as it will signify that the sky is containing the sun fully, which is not true.
• Into cannot be used here as it does not fit the context. The sun can never shine into the sky
• That leaves us with the in which is the correct preposition here.
• The preposition in tells us the position of the sun i.e where it is shining.

The correct answer is: 'sun is shining in a clear sky.'

The correct answer is on.

Key Points

Reading the given sentence we find that: 

• A preposition that best describes or indicates the day or part of the day an event takes place.
• Here the question is indicating a hot day.
• Therefore, the most appropriate preposition from the options is 'on'.
• Whenever we describe the time of something with respect to date or day, we use on.

Therefore, the correct answer is on​.

The correct answer is no

Key Points

Reading the above sentence we find that: 

• Not is an incorrect option here as it is used with verbs.
• None is an incorrect option here as it is followed by of.
• Never is an incorrect option here as it represents time, not quantity.
• Thus that leaves us with option no.
• Following the structure of the previous sentence i.e  'Unless the sun is shining, there is no brightness.'

Thus from the given points, we can come to the conclusion that the correct answer is no. 

The correct answer will be: there is no refreshment.

The correct answer is Don't risk everything on the success of one venture. 

Key Points

Let's look at the meaning of the given idiom:

• Don't put all your eggs in one basket: one should not concentrate all efforts and resources in one area as one could lose everything. 
• Example: While trading in stock putting all your eggs in one basket is a dangerous plan.

Thus from the given meaning, we can conclude that the correct answer is don't risk everything on the success of one venture.

The correct answer is Behave uninhibitedly. 

Key Points

Let's look at the meaning of the given idiom:

• Let your hair down: To act comfortable and relaxed to do what you want.
• Example: It is only with friends that most people feel they can let their hair down and be themselves.

​Thus from the given meaning, we can infer that the correct answers is behave uninhibitedly. 

Additional Information

Let's look at the meaning of the word uninhibitedly. 

• Uninhibitedly: Free from any inhibition; unrestrained or unselfconscious.

The correct answer is Balderdash. 

Key Points

Let's look at the meaning of the correct word. 

• Balderdash: Senseless talk or writing; nonsense.
• Example: Every word that came out of the drunk man's mouth was balderdash.

​Thus from the given meaning and example, we can conclude that the correct answer is balderdash. 

Additional Information

Let's look at the meanings of the other given options. 

• Astute: Ability to notice and understand things clearly.
• Sagacious: Having or showing keen mental discernment and good judgement; wise or shrewd.
• Prudent: Acting with or showing care and thought for the future.

The correct answer is Authentic.

Key Points

Let's look at the meaning of the marked option. 

• Authentic: Made or done in the traditional or original way, or in a way that faithfully resembles an original.
• Example: The restaurant serves authentic Italian meals.

Thus from the given meaning and example, we can conclude that the correct answer is authentic.

Additional Information

Let's look at the meanings of the other given words. 

• Effigy: A sculptor or model of a person.
• Archetype: A very typical example of a person or a thing.
• Forge: Create something that is strong enduring or successful.

The correct answer is was exported. 

Key Points

Reading the given sentence we find that:

• The word flourished in the given sentence indicates that it is in the past tense.
• And the plural noun locks in the sentence indicates that the verb should have a plural helping verb.
• Thus from the above points, we can conclude that were exported will be the correct answer.

Thus the correct answer will be were exported. 

In the given options the option 2 is wrong for the following reasons. 

• Were export is wrong because as we have noticed, the sentence is in the past tense.
• Therefore the verb export should also be in the past tense i.e exported.

The correct answer is No improvement. 

Key Points

• Reading the above sentence we find that:
• There is no error in the given sentence.
• In the given question a general experience or activity is mentioned.
• Therefore the correct noun for the activity is oversleeping.
• Even though it ends with an -ing, oversleeping, in this case, is a noun or it is a gerund.

Important Points

• Gerund: An -ing form of a verb that has the same function as a noun. 
• Example: Sleeping is good for health.
• In the given example sleeping is an -ing form of a verb that is acting as a noun.

Additional Information

• Let's look at the meaning of the word Bliss
• Bliss: Happiness.  ​

The correct answer is CBA

Key Points

Reading the given question we find that:

• A sentence can't end with an article (a, an, the).
• Therefore parts B and C cannot be the last part of the sentence.
• Therefore only A can be the last part of the sentence.
• In the given question the Student's who ends with who and it should be followed by a verb.
• In part B 'subject know the' in this the word subject is not a verb.
• Therefore looking at the options we find that the correct option is CBA

Students who study logic as a subject know the intricacies of learning it.

The correct answer is scintillators.

Key Points

Let's look at the meaning of the correct option.

• Scintillators: a material that fluoresces when struck by a charged particle or high-energy photon.
• Example: A 13ml of liquid scintillator.

Thus from the given meaning and the example we can conclude that the correct answer is scintillators. 

All the other options are a wrong spelling of the given word. 

Therefore the correct answer is scintillators.

Just as Rabbit is an animals, Pentagon is a Figure.

Hence, answer is Pentagon: Figure.

The pattern followed here is:

63 is written in reverse as 36

Same pattern will be followed for missing terms:

94 is written in reverse order as 49.

Hence, answer is 94 : 49.

The logic here is as follows

Opposite of each letter as per English alphabetic order has been written in the next word,

A is 1^st from left: Z is 1^st from right.

C is 3^rd from left: X is 3^rd form right.

D is 4^th from left: W is 4^th from right.

Same will be followed for PMN,

P is 16^th from right: K is 16^th form left.

M is 13^th form right: N is 13^th form left.

N is 14^th form right: M is 14^th form left.

Hence, the correct answer is “KNM”.

The logic here is as follows:

All except Rhombus has Volume.

Hence, the correct answer is "Rhombus".

In all groups except group 3, second number is 4 more than the first number.

Hence, answer is 22 - 28.

The pattern followed here is :

U - 4 = Q; Q - 4 = M; M - 4 = I

S - 4 = O; O - 4 = K; K - 4 = G

M - 4 = I; I - 4 = E; E - 3 = B

P - 4 = L; L - 4 = H; H - 4 = D

So, MIEB are the odd letters as there is difference of 3 in E and B.

Hence, the correct answer is "MIEB".

The dictionary order arrangement would be :

1. Exception
2. Exceptional
3. Excess
4. Exchanged
5. Exchanging

Hence, the correct answer is "12543".

The pattern followed here is :

11 + 2 = 13

13 + 4 = 17

17 + 2 = 19

19 + 4 = 23

Same pattern will be followed for missing number :

23 + 2 = 25

Hence, the correct answer is "25".

The pattern followed here is:

So, next term in the series is JMO.

Hence, the correct answer is "JMO".

On arranging descending order of height,

Here, either Mohit or Mukesh will be at second position.

Hence, the correct answer is "cannot be determined".

Let's check each option,

1) Con → Contemptuous → can be formed.

2) Tom → Contemptuous → can be formed.

3) Pretty → Contemptuous → cannot be formed as there is no ‘y’ and ‘r’.

4) Post → Contemptuous → can be formed.

Here, we can see that Pretty cannot be formed.

Hence, the correct answer is " Pretty ".

The pattern followed here is:

Similarly,

Hence, the correct answer is " WNLNI ".

Given equation

⇒ 4 × 18 ÷ 5 - 10 + 8 =?

After Interchange

⇒ 4 + 18 × 5 ÷ 10 - 8

⇒ 4 + 18 × 0.5 - 8

⇒ 4 + 9 - 8

⇒ 13 - 8

⇒ 5

Hence, correct answer is " 5 ".

Given equation: 12 - 16 × 25 ÷ 80 + 10 = 7

Let's check each option,

1) ÷ and ×

→ 12 - 16 ÷ 25 × 80 + 10 = 7

→ 12 - 0.64 × 80 + 10 = 7

→ 12 - 51.2 + 10 = 7

→ -29.2 ≠ 7

→ LHS ≠ RHS.

2) - and +

→ 12 + 16 × 25 ÷ 80 - 10 = 7

→ 12 + 16 × 0.3125 - 10 = 7

→ 12 + 5 - 10 = 7

→ 17 - 10 = 7

→ 7 = 7

→ LHS = RHS.

3) × and -

→ 12 × 16 - 25 ÷ 80 + 10 = 7

→ 192 - 0.3125 + 10 = 7

→ 201.6875 ≠ 7

→ LHS ≠ RHS.

4) ÷ and -

→ 12 ÷ 16 × 25 - 80 + 10 = 7

→ 0.75 × 25 - 80 + 10 = 7

→ 18.75 - 80 + 10 = 7

→ -51.25 ≠ 7

→ LHS ≠ RHS.

Hence, by interchanging - and +, we’ll get the correct answer.

Hence, the correct answer is " - and + ".

The pattern followed here is:

6 + 1 = 7 and 7 × 10 = 70

2 + 3 = 5 and 5 × 10 = 50

4 + 5 = 9 and 9 × 10 = 90

Same pattern will be followed for 1α4:

1 + 4 = 5 and 5 × 10 = 50

Hence, correct answer is "50".

The logic here is as follows:

B is moving 1 step ahead in every step.

 BAAAAAAB, ABAAAAAB, AABAAAAB, AAABAAAB, AAAABAAB,

So, next term would be AAAAABAB.

Hence, the correct answer is "AAAAABAB".

The diagram given below shows the route of that shopper,

Hence, the correct  answer is "35 m West".

The least possible Venn Diagram for the given statements is as follows,

Conclusion I:

All ornaments are clocks → False (it is possible but not definite)

Conclusion II:

All clocks are ornaments → True

Hence, only conclusion II follows.

Hence, answer is DFG.

The pattern followed here is:

So, the next term in the series is KTZ.

Hence, the correct answer is "KTZ".

The pattern followed here is:

87 - 25 = 62

62 - 20 = 42

42 - 15 = 27

27 - 10 = 17

Here, multiple of 5 are subtracted from the given number.

Same pattern will be followed to find the missing number:

17 - 5 = 12

Hence, the correct answer is "12".

Logic: 1^st number = 3^rd number - 2^nd number

1) (14, 29, 43) → 43 - 29 = 14

2) (11, 23, 34) → 34 - 23 = 11

3) (15, 31, 46) → 46 - 31 = 15

4) (21, 42, 64) → 64 - 42 = 22 ≠ 21

Hence, (21, 42, 64) is the odd one among the given alternatives.

The mirror image is as follows:

Hence, the correct answer is "Option 2".

Let's check each option as per the opposite pair of faces pattern,

1) 

 → Can be formed.

2) 

 → Can be formed.

3) 

 → Can be formed.

4) 

 → Can't be formed because 

 and 

 should be the opposite faces.

Here, we can see that only Cube in option 4 cannot be formed.

Hence, the correct answer is " Option 4 ".

By checking solving all the options:

1) 11, 75, 12, 77 → J, R, H, Z

2) 32, 76, 44, 95 → L, Z, L, Y

3) 13, 78, 41, 66 → G, O, E, S

4) 33, 88, 21, 89 → I, S, B, P

So, ‘13, 78, 41, 66’ represents ‘GOES'.

Hence, the correct answer is "13, 78, 41, 66".

Calculation:

$\frac{{557{\rm{;}} \times {\rm{;}}653{\rm{;}} \times {\rm{;}}672}}{9}{\rm{;}}$

(557/9), then remainder = 8

(653/9), then remainder = 5

(672/9), then remainder = 6

Now, (8 × 5 × 6)/9 = 240/9

If (240/9), then reminder = 6

∴ Remainder is 6

Calculation:

$\sqrt {1 - \frac{{\rm{x}}}{{529}}{\rm{;}}} = \frac{{16}}{{23}}~~$

Squaring on both sides

⇒ $\left(\sqrt {1 - \frac{{\rm{x}}}{{529}}{\rm{;}}}\right)^2$ = $\left(\frac{16}{23}\right)^2$

⇒ 1 – (x/529) = (256/529)

⇒ (x/529) = {1 – (256/529)}

⇒ x/529 = 273/529

⇒ x = 273

∴ the value of x is 273

Given:

4x + 5y – 6 = 0 & 16x + 20y + 20 = 0

Concept used:

If there are two simultaneous equations a₁x + b₁y + c₁ = 0 and

a₂x + b2y + c2 = 0 , then the system of equations has 

1. Unique solution if a₁/a₂ ≠ b₁/b₂

2) Infinite solution if a₁/a₂ = b₁/b₂ = c₁/c₂

3. No solution if a₁/a₂ = b₁/b₂ ≠ c₁/c₂

Calculation:

Comparing on a₁x + b₁y + c₁ = 0 & a₂x + b₂y + c₂ = 0

⇒ a₁ = 4, b₁ = 5, c₁ = - 6 & a₂ = 16, b₂ = 20, c₂ = 20

⇒ 4/16 = 5/20 ≠ (-6)/20

So, there is no solution.

∴ The correct answer is 0

Given:

$4{\rm{x}} + {\rm{}}\frac{{\sqrt {\rm{x}} }}{6}{\rm{}} + {\rm{}}\frac{{{{\rm{m}}^2}}}{4}{\rm{;}}$

Formula used:

(a + b)² = a² + 2ab + b²

Calculation:

$\Rightarrow {\rm{}}4{\rm{x}} + {\rm{}}\frac{{\sqrt {\rm{x}} }}{6}{\rm{}} + {\rm{}}\frac{{{{\rm{m}}^2}}}{4}$

$\Rightarrow {\left( {2\sqrt x } \right)^2} + 2 \times 2\sqrt x \times \frac{1}{{24}} + {\left( {\frac{m}{2}} \right)^2}~~$

To make the above equation a perfect square,

⇒ m/2 = 1/24

⇒ m = 2/24

∴ m = 1/12

In this question options 3 & 4 not correct because data not sufficient to prove QC = 1/2 × PB

And given that ∠AQC = ∠APB = 90°

Now, we can say QC ∥ PB

Given:

∠AOB = 120°

AB = 10 cm

Calculations:

Draw OD ⊥ AB

So, ∠DOB = 1/2 × ∠AOB = 1/2 × 120 = 60°

⇒ DB = 1/2 × 10 = 5 cm

Now, In ΔODB

⇒ cot 60° = OD/DB

⇒ 1/(√3) = OD/5

⇒ OD = 5/(√3) cm

∴ The distance of the chord from the centre is 5/(√3) cm.

Calculation:

If P : Q = 9 : 7

Let P = 9k & Q = 7k

So, (P – Q) : (P + Q) = (9k – 7k) : (9k + 7k) = 2k : 16k = 1 : 8

Calculation:

Let x kg of wheat costing Rs 84 per kg must be mixed.

SP of the 1 kg wheat = Rs. 75.9

Gain% = 15%

So, CP of the 1 kg wheat = 75.9 × 100/115 = Rs. 66

Using allegation method

Thus, ratio of 1^st type to 2^nd type of wheat mixed = 6 : 18 = 1 : 3

⇒ x/81 = 1/3

⇒ x = 27 kg

∴ 27 kg of wheat costing Rs. 84 per kg must be mixed.

Given:

Average height of A, B, & C = 148

Average height of A & B = 136

Average height of B & C = 125

Formula used:

Average = Sum of observation ÷ no. of observation

Calculation:

A + B + C = 148 × 3 = 444    ----(1)

A + B = 136 × 2 = 272    ----(2)

B + C = 125 × 2 = 250    ----(3)

Subtract equation (2) from equation (1)

A + B + C – A – B = 444 – 272

⇒ C = 172

Putting value of C in equation (3), we get

B + 172 = 250

∴ B = 250 – 172 = 78 cm

Given:

P = 17500,

SI = 13300 

T = 5 years

Formula used:

S.I. = P × R × T/100

where P → Principal

R → Rate of interest

T → Time period

Calculation:

⇒ SI = (p × r × t)/100

⇒ 13300 = (17500 × r × 5)/100

⇒ r = 15.2%

Using allegation method

∴ Required ratio = 5.2 : 8.8 = 13 : 22

Calculation:

Let total articles = 100

And, total CP of articles = Rs. 100

If 60% of total articles are sold at a loss of 50% and the remaining articles are sold at a profit of 50%

So, SP of 60 articles = 60 × 50/100 = 30

And, SP of 40 article = 40 × 150/100 = 60

Total SP of all article = 60 + 30 = 90

∴ loss% = (CP – SP)/CP × 100 = (100 – 90) /100 × 100 = 10%

Given:

The successive discount are 20%, 30% and 40%.

Formula:

Successive discount = X + Y - (XY)/100

Where,

X = First discount

Y = Second discount

Calculation:

Successive discount = X + Y - (XY)/100

⇒ 20 + 30 - 600/100

⇒ 44%

Now, again

Successive discount = X + Y - (XY)/100

X = 44%, Y = 40%

⇒ 44 + 40 - (44 × 40)/100

⇒ 84 - 176/10

⇒ 84 - 17.6 = 66.4%

∴ The single equivalent discount is 66.4%.

Let MP be 100

SP after discount = 100 × 80/100 × 70/100 × 60/100 = 33.6

We know, discount = MP – SP

So, net discount = 100 – 33.6 = 66.4

∴ Discount % = 66.4/100 × 100 = 66.4%

Calculation:

$\sqrt {676} + \sqrt {6.76;} + \sqrt {0.0676} = 27.76$

⇒ 26 + 2.6 + 0.26 = 27.7

⇒ 28.86 = 27.7

So, statement 1 is false.

$\sqrt {339 + 36 + 49 + 81} = 19$

$\Rightarrow \sqrt {339 + 6 + 7 + 9} = 19$

⇒ √361 = 19

⇒ 19 = 19

So, statement 2 is true.

Given:

Efficiency of R = 80% more than S

No. of days S take to complete task = 90 days

Formula used:

Total work = Efficiency × Time

Calculation:

Let efficiency of S be 100

Thus, Efficiency of R = 100 × 180/100 = 180

Ratio of their efficiency R : S = 180 : 100 = 9 : 5

If S alone can make a book in 90 days,

So, Total work = 90 × 5 = 450

∴ R alone can complete the book = 450/9 = 50 days

Shortcut Trick

Distance = Speed × Time = (66 × 5/18) × 36 = 660 m = 66000 cm.

Circumference of wheel = πd = (22/7) × 21 = 66 cm.

Revolutions = Total Distance ÷ Circumference = 66000 ÷ 66 = 1000.

∴ The correct answer is 1000.

Alternate Method

Given:

⇒ Diameter of the car wheel (d) = 21 cm

⇒ Speed of the car (v) = 66 km/hr

⇒ Time taken (t) = 36 sec

Calculations:

⇒ First, convert Speed from km/hr to m/s:

⇒ Speed = 66 × (5/18) m/s = (11 × 5)/3 = 55/3 m/s

⇒ Total Distance covered (D) = Speed × Time

⇒ D = (55/3) × 36 = 55 × 12 = 660 meters

⇒ Convert distance to centimeters: D = 660 × 100 = 66000 cm

⇒ Circumference of the wheel (C) = π × d

⇒ C = (22/7) × 21 = 22 × 3 = 66 cm

⇒ Number of Revolutions (n) = Total Distance ÷ Circumference

⇒ n = 66000 ÷ 66 = 1000

⇒ Therefore, the wheel makes 1000 revolutions, which corresponds to option (4).

∴ The correct answer is 1000.

Additional Information

Circumference of a Circle

The distance covered by a wheel in one complete revolution is equal to its circumference, given by 2πr or πd.

Unit Conversions

To convert km/hr to m/s, multiply the value by 5/18. To convert meters to centimeters, multiply by 100.

Distance Formula

Distance = Speed × Time. Ensure all units are consistent (e.g., speed in m/s and time in seconds) before calculation.

Calculation:

Let the value be x

⇒ x = 88% of 1125 + 20% of 425

⇒ x = 1125 × 88/100 + 425 × 20/100

∴ x = 990 + 85 = 1075

∴ The most number of employees belong to E department = 150

Calculation:

∴ Total number of employees of the company = 60 + 60 + 30 + 90 + 150 + 30 + 120 = 540

Calculation:

Total employees of the company = 540

No. of Employees in department B = 60 employees

∴ Measure of the central angle = 360°/540 × 60 = 40°

Given:

Total employees of the company = 540

Average monthly salary of the employees of the company = 20,000

Concept used:

Sum of the salary = average salary × total number of employees

Calculation:

Sum of the monthly salary of the employees of the company = 20,000 × 540 = 108,00,000

∴ Total of the salaries 108 lakhs paid to all the employees of the company.

Given:

The area of an equilateral triangle = 49√3 cm2

Formula used:

Area of an equilateral triangle = √3/4 × a²

where a → side of the triangle

Calculation:

⇒ √3/4 × a² = 49√3

⇒ a² = 49 × 4

⇒ a = 14

∴ the side of the triangle = 14

Given:

No. of sides of a regular polygon = 6

Formula used:

The measure of an exterior angle of a regular polygon of n side = 360°/n

Calculation:

The measure of an exterior angle of a regular polygon of 6 sides

⇒  360°/6 = 60°

Given:

The total surface area of a hemisphere = 1039.5 cm2.

Formula used:

Total surface area of a hemisphere = 3πr²

where r → radius of the hemisphere

Calculation:

Total surface area of a hemisphere = 1039.5

⇒ 3πr² = 1039.5

⇒ 3 × 22/7 × r² = 1039.5

⇒ r² = 110.25

⇒ r = 10.5

∴ Diameter of the hemisphere = 10.5 × 2 = 21 cm

We know, sum of all the angles of a triangle is 180.

⇒ ∠D + ∠E + ∠F = 180°

 ⇒ ∠D + 90 + 30 = 180°

⇒ ∠D = 60°

∴ (cosD – 1/√2) = cos 60° – 1/√2 = 1/2 – 1/√2 = (√2 – 2­_­)/2√2

Given, ∠Q = 90, tan P = 24/7 and PQ = 14 cm

tan P = perpendicular/base = QR/PQ = 24/7

⇒ 24/7 = QR/PQ

⇒ QR = 24/7 × 14 = 48 cm

∴ the length of side QR = 48 cm

So, the agricultural price support program is an example of a price floor.

The correct answer is the Iron and Steel Industry.

Key Points

• The iron and Steel Industry was the first modern industry to develop in India.
• India is the largest producer of raw steel and the largest producer of sponge iron in the world.
• The economic reforms of 1991 open new doors for these industries, licensing requirements were abolished and automatic approval of foreign equity investment up to 100% was granted.
• India is 3ed largest finished steel consumer in the world after China and USA.
• The government has taken several steps to boost the sector including the introduction of National Steel Policy 2017.

Additional Information

• China is the world's largest crude steel producer followed by India, Japan, and the USA in 2018.
• Iron & steel are freely importable and exportable products.
• The cottage industry is one of the oldest industries in India, which traces its roots from ancient times.

• Victoria lake lies on the Equator in Africa continent.
• Lake Victoria is the largest lake in Africa and chief reservoir of the Nile lying mainly in Tanzania and Uganda but bordering on Kenya.
• Lake Victoria is the largest freshwater body in Africa and second largest in the world, smaller only than lake superior, which is one of North America’s Great Lakes.

• Jog falls, Gerosoppa falls or jog falls is the second-highest plunge waterfall in India located in Karnataka.
• Jog falls is created by the Sharavatihi river dropping 253m (830 ft).
• Plunge waterfall it means water descends vertically, losing contact with bedrock surface.

The correct answer is Akbar.

Key Points

• Abu'l-Fazl ibn Mubarak, often known as Abul Fazl or Abu'l Fadl, was the Mughal emperor Akbar's grand vizier from 1579 until his death in 1602.
• He wrote the Akbarnama, a three-volume official chronicle of Akbar's reign, as well as a Persian translation of the Bible.
• He was also a member of Emperor Akbar's royal court's Nine Jewels and the brother of Faizi, the poet laureate.
• Faizi was the pen name of Abu al-Faiz ibn Mubarak, a late medieval Indian poet, and scholar whose descendants were Malik-ush-Shu'ara (poet laureate) of Akbar's Court.
• He was Akbar's historian Abul Fazl's older brother.
• Akbar admired his brilliance and made him a tutor for his kids, as well as placing him among his ornamental 'Navaratnas.'

Important Points

• Nine Gems (Navratna) of Akbar's Court

The correct answer is Panvar 

• After the failure of August's offer, Gandhi decided to initiate a limited satyagraha on an individual basis by a few selected individuals in every locality.
• The aims of launching individual satyagraha were:
• to show that nationalist patience was not due to weakness;
• to express people's feeling that they were not interested in the war they made no distinction between Nazism and the double autocracy that ruled India;
• to give another opportunity to the Government to accept Congress' demands peacefully.
• Vinoba Bhave was the first to offer the satyagraha and Nehru, the second.
• By May 1941, 25,000 people had been convicted for individual civil disobedience.
• In Pavnar the leader of the Individual Satyagraha movement, Acharya Vinoba Bhave started this movement.
• The individual Satyagraha movement was not to seek independence but to affirm the rights of speech.
• Vinayak Narahari Vinoba Bhave was an Indian advocate of nonviolence and human rights and also best known for the Bhoodan movement.

The Upanishads are ancient Sanskrit texts that contain some of the central philosophical concepts and ideas of Hinduism, some of which are shared with religious traditions like Buddism and Jainism.

The Katha Upanishad is one of the primary Upanishads which was embedded in the last short eight sections of Katha school of the Krishna Yajurveda.

The well-known dialogue between Nachiketa and Yama is mentioned in Kathopanishad.

In January 2018 China broke India's monopoly in providing Internet access to Nepal by becoming country's second Internet service provider.

New terrestrial fibre cable was launched in 2016 by CTG (China Telecom Global) will now connect Nepal and China through the Jilong border gateway.

Gajendra Chauhan is NOT a recipient of Sangeet Natak Akademi's fellowships (Akademi Ratna) in 2018.

The Sangeet Natak Akademi fellowship is an Indian honour awarded for Performing Arts in India.

It is most prestigious and rare honour conferred by the Akademi and is restricted to 40 individuals at any given time.

The Boxer Rebellion, Boxer uprising of Yihetuan Movement was a violent anti-foreign, anti-colonial and anti-Christian uprising that took place in China between 1899 and 1901 towards the end of the Qing dynasty.

The correct answer is Positive helium ion.

Key Points 

• Two protons and either one or two neutrons, depending on the isotope, are kept together by the strong force in the helium nucleus.
• It is made up of two electrons bound by the electromagnetic force to it.
• A helium atom gains a positive charge when electrons are lost because there are more protons in the helium atom than electrons.
• Helium forms a positive ion with a +1 charge when it loses one electron.

Additional Information

• Proton:
• With an elementary electric charge of +1 e, a proton is a stable subatomic particle.
• Negative helium ion:
• Collisions between ground-state helium atoms and the lead and magnesium vapours in the energy range of 20 to 40 keV resulted in the production of helium-negative ions.
• Alpha particle:
• Two protons and two neutrons are joined together to form the alpha particle.

Apart from proposing an atomictheory, John Dalton researched Colour Blindness.

His first paper on “Extraordinary facts relating to the vision of colours” in which he postulated that storage in colour perception was caused by discolouration of the liquid medium of the eyeball.

There are more than 15 unitary features in Indian Constitution some of them are

Single Constitution for State and Centre

Single Citizenship

Integrated Judiciary.

• Article 360 states that if the President is convinced that a situation has arisen whereby the financial stability or any part thereof is threatened, President may declare a state of financial emergency.
• Article 360 of ​the Indian Constitution empowers the President of India to proclaim a Financial Emergency.

Meristem is the tissue in the most plants containing undifferentiated cells found in zones of the plant where growth can take place.

A group of cells which are similar in origin, similar in structure and similar in function are called Permanent tissue.

Dividing capacity is the basis of classifying various plant tissues as meristematic tissue and permanent tissue.

• The project DARPAN (Digital Advancement of Rural Post Office for a New India) launched by Minister of Communications Shri. Manoj Sinha in December 2017.
• It is to improve the quality of service, add value to services and achieve financial inclusion of un-banked rural population.

Parasitic plants are often referred to as curious plants, as they steal their nutritional needs from the host.

Gleadovia Konyakianorum is a holoparasite (complete parasite) plant that derives its entire nutritional requirement from the host plant which is a Strobilanthes species white in colour.

Naga is a vaguely defined umbrella term for several indigenous communities in North-East India and Upper Burma.

​The centre to be built is Global IT centre in Belapur in Navi Mumbai. It will be the largest innovation centre by any financial services company in the country, the official claimed.

​To deal with cyber crimes such as financial frauds, circulation of communal and pornographic contents, the Union Home Ministryplanned to set up an apex coordination centre and has asked States to establish a similar mechanism in every district.

Concept:

• Force: Force is a push or pull on an object. A force can cause an object to accelerate, slow down, remain in place, or change shape.

Force exerted = mass x acceleration

F = m × a

Acceleration = (Final velocity(v) - Initial velocity(u))/ time

$a = \frac{{v - u}}{t}$

Where F is the force exerted on the body, m is mass of the body, a is the acceleration of the body, v is final velocity, u is initial velocity and t s time.

Calculation:

Given,

Mass of body = 6 kg.

Change in velocity = (18 - 6) = 12 m/s

Time= 3 sec

Acceleration = 12/ 3 = 4m/s² 

Force = mass × acceleration

Force = 6 × 4 = 24 Newton.

Hence the correct option is 24 Newton

The correct answer is Power.

Power:

• Power is defined as the rate of doing work or the rate of transfer of energy.
• It can also be said as the amount of work done in a given amount of time.
• SI unit of power is represented by Watt (W). Formulae for power is given by p = W /t.

Average Power = Total energy consumed/ Total time taken

P_avg = ∆W/ ∆t

• Power is the rate of doing work and the amount of energy transferred per unit time.
• It is a scalar quantity.
• The unit is joule per second (J/s).

The correct answer is option 2 i.e 70 %

About 75% of the Earth’s surface is water-covered and the oceans hold for about 96.5% of all Earth’s water.

Water also exists in the air as water vapour in rivers and lakes, icecaps and glaciers and in the ground as soil moisture.