SSC CHSL Previous Paper 50 (Held On: 25 March 2018 Shift 1) (Previous Year Paper)

The correctly spelt word is reverberate. It means resound / re-echo / be repeated several times as an echo.

Example : Her singing reverberated through the halls.

Therefore, the correct answer is option 2.

The correct answer is 'ABC'

Key Points

• Going through the parts A, B and C, the only part that can form the first part of the sequence is A.
• ‘In the entire process of discoveries…’ makes logical sense. The next part can be B which continues the thought flow. ‘discoveries and development’ form a sensible pair of words joined by the conjunction and.
• This is suitably followed by C. The correct sequence is ABC.
• In the entire process of discoveries and development, ethics was exiled.

Therefore, the correct answer is option 2.

The correct answer is 'Has also reduced'

Key Points

• The correct structure to be used is had/has + verb in past participle.
• Let us see some examples to understand:
• I had cooked some food for you.
• They had bought a new car.
• This has given me a new opportunity.
• Has is used in the present tense and had in the past tense.
• The sentence in the question is discussing one of the advantageous features of writing a greeting card. This is valid in the present time. So, we will use has. The past participle form of the verb reduce is reduced.
• Correct sentence - The greeting card has also reduced the need to sit down and write loving messages to our dear ones.

Therefore, the correct answer is option 3.

The correct answer is 'was sitting'

Key Points

• The sentence is in past tense. The action was completed in the past. The rule is : past continuous tense can be used to describe something that was happening continuously in the past when another action interrupted it (this action is expressed in simple past).
• Examples :
• I was making lunch when he arrived.
• When I woke up, it was raining
• In the given question, it would be grammatically correct to use the past continuous tense as ‘by the time we set out’ is in simple past tense.

Correct Sentence - By the time we set out, the sun was sitting pretty in the blue sky.

Therefore, the correct answer is option 1.

The correct answer is 'Theological'

Key Points

Let us look into the meaning of the given words:

1. Scepticism – an attitude that shows that one doubts the truth of something
2. Atheism – lack of belief in the existence of God
3. Impiety – lack of respect for sacred things or God
4. Theological – relating to the study of faith and religion

Therefore, the correct answer is option 4.

Additional Information

Let us look into the meaning of the difficult words:

Key Points 

1. Sanctity – the quality of being sacred or holy (पवित्रता की अवस्‍था)
2. Vile – extremely unpleasant and unacceptable (बहुत ख़राब या अप्रिय)
3. Heinous – very wicked, bad or shocking (जघन्य, अतिदुष्ट)

Hence, the word sanctity is the best substitute, making option 2 the correct answer.

Additional Information 

‘Cut corners’ meaning to do something in the easiest and shortest way especially to save money, time or efforts.

Example : It is not a smart move to cut corners with national security.

Therefore, the correct answer is option 4.

The structural form that we require to understand is this : Superlative + ever + present perfect

Examples – Titanic is the best movie I have ever seen (Best + ever + seen)

It is the worst relationship I have ever had. (worst + ever + had)

So, in the given sentence, we need the superlative form (highest degree of comparison) of big – biggest. (…**indeed the biggest-ever such iceberg,…)**

Therefore, the correct answer is option 3.

‘A’/ ‘An’ are articles having the same meaning used for singular nouns. We use ‘a’ in front of consonant sounds and ‘an’ before vowel sounds.

 In English alphabets, A ,E, I, O and U are vowels and the rest are consonants. Thus, we have : a girl, a boy, an apple, an orange etc.

In the given sentence, official starts with a vowel sound. So, the most appropriate article would be an (shelf, now an official iceberg…)

Therefore, the correct answer is option 2.

Width is the measure used to indicate how wide something is. The following example will help us to

understand how these words differ in their usage.

This table is 1 metre wide / The width of this table is 1 metre.

Similar is the case with length and long : This table is 1 metre long / The length of this table is 1

metre.

So, looking at the given context, the most appropriate word is wide (and 300 feet wide. By January 2017…).

Therefore, the correct answer is option 4.

Adverbs describe how, when or where an action takes place. These are describing words of verbs. They often end with –ly.

For example, Ramesh does his job sincerely. Here, sincerely describes how Ramesh does his job. So, sincerely is an adverb.

Similarly, in the question, we need an adverb that will describe the verb ‘growing’. Steadily seems an appropriate answer. (was growing steadily. By 2016 the …)

Therefore, the correct answer is option 1.

The correct preposition to be used here is with – you work with something.

When we use with in the blank, the part of the sentence is logically and grammatically correct : Administration (NASA) working with satellite data tracking

Therefore, the correct answer is option 4.

The correctly spelt word is ‘Ceiling’. Therefore, the correct answer is option 1.

"I before E, except after C" is the general rule to be followed. We often have -ei after c in spellings. For other words, -ie is used. 

Examples: relieve, receive, fierce, friend, conceive

The correct answer is 'The king thought that his hour had come.'

Key Points

• In Direct speech, the message is conveyed in the words of the author or concerned person.
• In Indirect speech, the message is conveyed in our words.
• When we convert Direct speech to Indirect speech, we omit the inverted commas. Also, the conjunction that is added before introducing the words spoken between quotation marks (“…”).
• Some notable changes that are made while doing the conversion from Direct to Indirect is :
• am --> was
• is --> was
• has --> had
• have been to --> had been to
• So, has in the given sentence of the question should be converted to had.

So the correct sentence is- The king thought that his hour had come.

Therefore, the correct answer is option 1.

The correct answer is 'The cricketer was invited by the fans.'

Key Points

• When the subject performs the action – it is Active Voice.
• When the subject is being acted upon by the verb – it is Passive Voice.
• We should change the sequence of the subject and the object (or the action) while keeping the meaning intact.
• In Active voice – Subject + verb + object is the sequence.
• In Passive voice – Object + verb + Subject is the sequence.
• (Subject is someone that works on the object)
• In the given sentence, 'the fans' is the subject because they are doing an action. They are inviting. The action is done on the object which is the cricketer here. So, the sentence in the question is in its Active Voice.

To change it into passive voice, the sentence should begin with the object ‘The cricketer’.

• Verbs are also changed. Some conversions are :
• Eats --> is eaten
• Is cleaning --> is being cleaned
• Will clean --> will be cleaned
• Destroyed --> was destroyed

Following these thumb rules, the same sentence in the passive voice is The cricketer was invited by the fans.

Therefore, the correct answer is option 1.

The correct answer is 'PRQ'

Key Points

• The first part of the sequence can be P as it continues the thought flow. ‘Climatic information can be obtained through an…’ seems logically sound.
• Now, we need to know through what climatic information can be obtained? This is answered by part R. So, R can follow with Q as the ending part of the sentence. The right sequence is PRQ.

Climatic information can be obtained through an understanding of changes in tree growth

Therefore, the correct answer is option 3.

The word Effervescent means lively, marked by high spirits or excitement.

Let us look into the meaning of the difficult words:

Bubbly – cheerful and full of high spirits

Stale – not fresh, not enthusiastic, bored

Resilient - able to withstand and recover quickly from difficult conditions

We find that the word stale expresses the opposite meaning.

Therefore, the correct answer is option 3.

The correct answer is 'Follower'

Key Points

• The word Vanguard means a group of people leading the way in ideas or new developments
• Let us look into the meaning of the given words:
• Forefront – the most important or influential position.
• Follower - a person who supports and admires a particular person or set of ideas.
• Leader - the person who leads or commands a group, organization, or country.
• Pioneer - one of the first people to do something.
• We find that the word follower expresses the opposite meaning.
• Therefore, the correct answer is option 2.

The correct answer is 'Remember'

Key Points

• The word Reminisce means to talk or write (enjoyably) about something from the past. In a way, it is like remembering the past with pleasure.
• We find that the word remember expresses the similar meaning.

Therefore, the correct answer is option 1.

The correct answer is 'Aversion'

Key Points

• The word Repugnance means a feeling of strong dislike or disgust.
• Let us look into the meaning of the given words:
• Esteem – admiration and respect
• Aversion – a strong dislike
• Sympathy – understanding and caring for someone else’s misfortune or suffering
• We find that the word aversion expresses a similar meaning.

Therefore, the correct answer is option 3.

The correct word is ‘attractions’ as it suits the given context. Here, it means the aspects or features that make something interesting.

Complete sentence: The many attractions (interesting features) of Dalhousie have made it popular among tourists.

The correct answer is option 2.

Here the correct answer is Isn't it.

Key Points:-

• In the above-given sentence, isn't it will be used.
• It is a usual practice to state something and then end the sentence with a question asking for confirmation.
• Consider the sentence, “It is hot, isn’t it?”. The part “isn’t it?” is called a question tag.
• The general rules of using a question tag are:
• Finish the negative statement using a positive question tag.
• Examples:-
• They are not going to the mall, are they?
• Swati can’t sing, can she?
• Finish the positive statement using a negative question tag.
• Examples:- 
• Sameer cooks well, doesn’t he?
• Sakshi broke the laptop, didn’t she?
  

Complete sentence – This is Hrithik Roshan’s autograph, isn’t it?

Hinglish

• ऊपर दिए गए वाक्य में, isn't it का प्रयोग किया जाएगा।
• कुछ कहना और फिर पुष्टि के लिए पूछने वाले प्रश्न के साथ वाक्य को समाप्त करना एक सामान्य प्रथा है।
• वाक्य पर विचार करें, "It is hot, isn’t it?"। भाग "isn’t it?" प्रश्न टैग कहा जाता है।
• प्रश्न टैग का उपयोग करने के सामान्य नियम हैं:
• सकारात्मक प्रश्न टैग का उपयोग करके नकारात्मक कथन समाप्त करें।
• उदाहरण: -
• They are not going to the mall, are they?
• Swati can’t sing, can she?
• नकारात्मक प्रश्न टैग का उपयोग करके सकारात्मक कथन समाप्त करें।
• उदाहरण: -
• Sameer cooks well, doesn’t he?
• Sakshi broke the laptop, didn’t she?
  

पूरा वाक्य - This is Hrithik Roshan’s autograph, isn’t it?

The error lies in part 1 of the sentence. Therefore, the correct answer is option 1.

Looking at the structure of the sentence, see should replace seeing to make the sentence grammatically correct. The context uses the simple present tense.

Correct Sentence - The truth is that when people see you zoned into your work and in harmony with yourself, they come to distract you

The error lies in part 3 of the sentence. Therefore, the correct answer is option 3.

Let us understand the meanings of the words affect and effect.

The word affect is used as a verb only. We can use effect as both verb and noun.

Affect means to influence something or someone. Effect, when used as a noun, means the result of an influence.  When used as a verb, effect means to bring about or cause something to occur.

Examples –

The harmful effects of a bad company should be highlighted among teenagers. (effect as noun)

The bad company has affected him severely.

The government was not able to effect any social change. (effect as a verb - meaning the government was not able to bring about any social change)

In the given sentence, affected should replace the word effected to make the sentence grammatically correct.

Correct Sentence - The excessive use of pesticides has negatively affected soil output.

As School is for education similarly hospital is for treatment.

Hence, the correct answer is, "Hospital : Treatment".

The logic here as follows:

125 is the cube of 5.

Similarly,

343 is the cube of 7.

Hence, the correct answer is "343".

The logic here as follows:

Similarly,

Hence, the correct answer is "IEB".

The logic here is as follows:

The first one is used to hold/store the second one.

1) Cup – Tea → Cup is used to hold Tea.

2) Jug – Water → Jug is used to hold Water.

3) Bowl – Curd → Bowl is used to hold Curd.

4) Pen – Butter → In this case there is no relationship between them.

Hence, the correct answer is "Pen – Butter".

The logic followed here is,

(Second Number) + 4 = First Number

21 + 4 = 25

35 + 4 = 39

47 + 4 = 51

87 + 4 = 91 ≠ 93

Except for option 4, in all the other alternatives, the first one is greater than the second one by 4. Thus it is the odd one out.

Hence, the correct answer is, "93 – 87".

The logic here is as follows:

Hence, the correct answer is "CGJ".

After arranging the given words in the dictionary order, we get

5. Tiring
6. Toast
7. Toddle
8. Toilet
9. Tolerate

Hence, the correct answer is “53241”.

The logic followed here is,

Hence, the correct answer is "633".

The table showing the alphabetical order given below,

The pattern followed here is First and Third letters of each word are shifted forward by 2 places, while the Second and the Fourth letters are shifted forward by 3 places as per the English alphabetical order.

Thus,

H + 2 = J + 2 = L + 2 = N + 2 = P

J + 3 = M + 3 = P + 3 = S + 3 = V

R + 2 = T + 2 = V + 2 = X + 2 = Z

N + 3 = Q + 3 = T + 3 = W + 3 = Z

Hence, the correct answer is "PVZZ".

Given that, “Raman remembers that his marriage is before the 20th July and after the 13th July” and “His mother remembers that Raman’s marriage is after the 16th of July.”.

It means Raman’s marriage is on 17^th July or 18^th July or 19^th July.

Again, given that “His father remembers that Raman’s marriagee is before 19th July.”

Thus, Raman’s marriage is on 17^th July or 18^th July.

Hence, the correct answer is, "17 or 18".

1. Moon → PREMONITION →  CAN be formed

2. More →  PREMONITION →  CAN be formed

3. Move → PREMONITION →  CANNOT be formed

4. Note →  PREMONITION →  CAN be formed

Hence, the answer is “MOVE”.

Given that “PILOW” is written as “49352” and “TRAIN” is written as “78691”.

Here, “I” is common in both the words and here his value is “9”.

So, “PRAWN” is written as “48621”.

Given that: 9 × 18 ÷ 5 - 90 + 8

After change the code: 9 + 18 × 5 ÷ 90 – 8 = 9 + 1 – 8 = 2

Hence, the answer is 2.

Given equation: 24 + 4 - 20 ÷ 9 × 5 = 31

Checking each option one by one, we get

1. “- and +”

24 - 4 + 20 ÷ 9 × 5 ≠ 31

2. ÷ and ×”

24 + 4 - 20 ÷ 9 × 5 ≠ 31

3. “× and –“

24 + 4 × 20 ÷ 9 - 5 ≠ 31

4. “+ and ÷”

24 ÷ 4 – 20 + 9 × 5 = 31

Hence, the answer is option "+ and ÷".

The logic followed here is,

(Product of the two integers) × (-1)

5 # 5 → {(5) × (5)} × (-1) = -25 

-4 # 3 → {(-4) × (3)}  × (-1) = 12

3 # 3 → {(3) × (3)}  × -1 = -9

Similarly,

4 # 5 → {(4) × (5)} × -1 = -20

Hence, the correct answer is ‘-20’.

The logic followed here is in every step ‘BB’ shifts one place towards the right side.

Thus the above series will be,

BBAAAAA, ABBAAAA, AABBAAA, AAABBAA, AAAABBA, AAAAABB

Hence, the correct answer is,  "AAAAABB".

The paths followed by Chand and Dhyan are shown below,

From the above figure,

The distance between Chand's final point and Dhyan's final point is,

= (105+ 45) - 75 ⇒ 150 - 75 = 75

Thus, Chand is 75 m North with respect to the position of Dhyan.

Hence, the correct answer is, "75 m North".

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

I. No fast foods are sandwiches → Does not follow (As there is no direct relation between Sandwich and Fastfood, it may be possible but not definite)

II. Some fast foods are burgers → Follows (as some burgers are fast foods)

Thus, only conclusion II follows.

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

Art critics who are not Riders are represented by the area bounded by Circle excluding the area bounded by the triangle.

Thus, BLEF is the set of letters represents Art critics who are not Riders.

Hence, the correct answer is, "BLEF".

The table showing the alphabetical order is given below,

The logic followed is the First, Second and the third letter of each word is shifted backwards by two, three and four places as per the English alphabetical order.

Hence, the correct answer is ‘UDS’.

The logic here is as follows:

Hence, the correct answer is "32".

The logic here is as follows:

Logic: First number + Third number = Second number

1) (8, 23, 15) → 8 + 15 = 23,

2. (12, 35, 23 → 12 + 23 = 35,

3) (15, 44, 31) → 15 + 31 = 46 (given 44),

4. (17, 50, 33) → 17 + 33 = 50

Hence, the correct answer is " (15, 44, 31) ".

The correct mirror image of the given figure when the mirror is held on the left side of the oject is

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

Additional Information 

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

The 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.

The water image is just a reflection where the top and bottom parts of the images changed while the left and right sides of the image remain the same.

figure cannot be made based on the unfolded cube in the given question figure.

Checking each option as per the table given,

1. 97, 12, 21, 42 – U, A, C, K

2. 65, 12, 21, 42 – S, A, C, K

3. 30, 55, 42, 68 – G, R, K, Y

4. 12, 77, 21, 68 – A, Q, C, Y

Hence, the correct answer is “65, 12, 21, 42”.

Concept used:

A number is divisible by 9 if sum of its digit is divisible by 9

Calculation:

The number is 657354x45

So, the sum of the digit = 6 + 5 + 7 + 3 + 5 + 4 + 7 + x + 4 + 5 = 46 + x

If we put x = 8, then number become 46 + 8 = 54

The 54 is divisible by 9

∴ The correct answer is 2.

Formula used:

a² - b² = (a + b) (a - b)

Calculation:

⇒ $\frac{{59881{\rm{;}} \times {\rm{;}}59881 - 49681{\rm{;}} \times {\rm{;}}49681}}{{10200}}$

$\Rightarrow {\rm{}}\frac{{\left( {59881} \right) - {{(49681)}^2}}}{{10200}}$

$\Rightarrow {\rm{}}\frac{{\left( {59881{\rm{;}} + {\rm{;}}49681} \right){\rm{;}}\left( {59881 - 49681} \right)}}{{10200}}$

$\Rightarrow {\rm{}}\frac{{109562{\rm{;}} \times {\rm{;}}10200}}{{10200}}$

⇒ 109562

∴ The correct answer is 109562.

Given:

${\left( {\frac{5}{7}} \right)^{4{\rm{x}}}}{\left( {\frac{7}{5}} \right)^{3{\rm{x}} - 1}}{\rm{}} = {\rm{}}{\left( {\frac{7}{5}} \right)^8}~~$

Concept used:

a^m × aⁿ = a^{{m + n}}

Concept used:

$\Rightarrow {\rm{;}}{\left( {\frac{5}{7}} \right)^{4{\rm{x}}}}{\left( {\frac{7}{5}} \right)^{3{\rm{x}} - 1}} = {\left( {\frac{7}{5}} \right)^8}~$

$\Rightarrow {\rm{}}{\left( {\frac{7}{5}} \right)^{3{\rm{x}} - 1}} = {\left( {\frac{7}{5}} \right)^8}{\rm{}} \times {\rm{}}{\left( {\frac{7}{5}} \right)^{4{\rm{x}}}}~$

⇒ 3x - 1 = 8 + 4x

⇒ x = -9 

∴ The correct answer is -9 .

Given:

⇒ $\frac{{{{\rm{x}}^{32}} - 1}}{{{{\rm{x}}^{16}}}}{\rm{}} = {\rm{}}5$

Formula used:

(a - b)³ = a3 - b3 - 3ab (a - b)

Calculation:

⇒ $\frac{{{{\rm{x}}^{32}} - 1}}{{{{\rm{x}}^{16}}}}{\rm{}}$ = 5

$\Rightarrow {\rm{;}}{{\rm{x}}^{16}} - \frac{1}{{{{\rm{x}}^{16}}}}{\rm{}}$ = 5

Cubing both sides of the equation:

$\Rightarrow {\rm{}}{\left( {{{\rm{x}}^{16}} - \frac{1}{{{{\rm{x}}^{16}}}}} \right)^3}{\rm{}}$ = (5)³

⇒ ${\rm{}}{{\rm{x}}^{48}} - \frac{1}{{{{\rm{x}}^{48}}}} - 3\left( {{{\rm{x}}^{16}} - \frac{1}{{{{\rm{x}}^{16}}}}} \right)$ = 125

⇒ $x^{96} -1\over x^{48}$ - 3 × 5 = 125

$\Rightarrow {\rm{}}\frac{{{{\rm{x}}^{96}} - 1}}{{{{\rm{x}}^{48}}}}$ = 125 + 15

⇒${\rm{;}}\frac{{{{\rm{x}}^{96}} - 1}}{{{{\rm{x}}^{48}}}}{\rm{}}$ = 140

∴ The Required value of the given expression is 140

Given:

The length of the transverse tangent = 8 cm

Radius of the circle₁ = 7 cm

Radius of the circle₂ = 3 cm

Formula used:

(Transverse tangent)² = (distance between center)² - (radius₁ + radius₂)²

Calculation:

Let the Distance between center (AC) = d

Length of Transverse tangent = PQ = RS = 8 cm

By formula,

⇒ PQ² = d² - (r₁ + r₂)²

⇒ 8² = d² - (7 + 3)²

⇒ 64 = d² - 10²

⇒ d² = 100 + 64 = 164

⇒ d = √164 cm

∴ The correct answer is √164 cm.

Concept used:

The angle subtended by an arc at the center is twice the angle subtended at the circumference.

∠BOC = 2 × ∠BAC

Calculation:

In △OBC

Let ∠OBC = X

Thus, ∠OCB = X (∵ OB = OC = r)

The sum of all the angles of the triangle is 180°.

∠BOC + ∠OBC + ∠OCB = 180

⇒ ∠BOC + X + X = 180

⇒ ∠BOC = 180 - 2X

Now,

∠BOC = 2 × ∠BAC

So, 2 × ∠BAC = 180 - 2X

⇒ ∠BAC = 90 - X

∠BAC + ∠OBC = 90 - X + X = 90°

∴ The correct answer is 90°.

Given:

The weight of A and B are in the ratio = 11 : 8

Calculation:

Let the weight of A = 1100

& weight of B = 800

Total weight of (A + B) = 1000 + 800 = 1900

Let B’s weight increases by x%

According to the question

⇒ 1100 + 1100 × 40/100 + 800 + 800 × (x/100) =1900 + 1900 × 30/100

⇒ 1100 + 440 + 800 + 800 × (x/100) = 1900 + 570

⇒ 2340 + 800 × (x/100) = 2470

⇒ 800 × (x/100) = 130

⇒ x = 130/800 × 100

⇒ x = 16.25%

∴ The correct answer is 16.25%.

Given:

Income of S : Income of T : Income of U = 7 : 9 : 6

Expenses for S : expenses for T : expenses for U = 4 : 5 : 3

S income = 14000; S expenses = 2000

Calculation: 

Let income of S = 7x, income of T = 9x and expenses of U = 6x

And expenses of S = 4y, expenses of T = 5y and expenses of U = 3y

'S' saves Rs.2000 out of an income of 14000.

So, 7x = 14000

⇒ x = 2,000

So, 7x - 4y = 2000

⇒ 14000 - 4y = 2000

⇒ 4y = 12000

⇒ y = 3000

Savings of T = 9x - 5y

⇒ 9 × 2000 - 5 × 3000 = 18000 - 15000 = 3000

∴ The correct answer is Rs.3000

Given:

Acid : Water = 7 : 3

Calculation:

Let the acid in the mixture = 7x

And water in the mixture = 3x

According to the question

⇒ 7x/(3x + 4) = 7/4

⇒ 28x = 21x + 28

⇒ 7x = 28

⇒ x = 4

∴ The quantity of acid in the mixture = 7x = 7 × 4 = 28

Calculation:

7 positive odd number which is divisible by 5 = 5, 15, 25, 35, 45, 55, 65 

Average of any AP = (first term + last term)/2

⇒ (5 + 65)/2 = 70/2 = 35

∴ The correct answer is 35.

Given:

S.I : Principal = 7 : 8

Time = 5 years

Calculation:

Let the principal = 8x

And Simple interest = 7x

We know,

⇒ (P × R × T)/100 = S.I

⇒ (8x × R × 5)/100 = 7x

⇒ R = 17.5%

∴ The correct answer is 17.5%.

Calculation:

CP of 9 chairs = Rs.5

So, C.P of 1 chair = 5/9

SP of 5 chairs = 9

So, SP of 1 chair = 9/5

We know, profit % = (SP - CP)/CP × 100

Profit% = {(9/5) - (5/9)}/(5/9) × 100 = 56/45 × 9/5 × 100 = 224%

∴ The correct answer is 224%.

Alternate MethodCalculation:

Now,

C.P : S.P = 25 : 81

Profit % = (56/25) × 100 = 56 × 4 = 224%

∴ The correct answer is 224%.

Given:

M.P of the pen = 3000

Calculation:

After 15% discount = 3000 × 85/100 = 2550

SP of the pen = 2142

required discount = (2550 - 2142)/2550 × 100

⇒ (408/2550) × 100 = 16%

∴ The correct answer is 16%.

Calculation:

⇒$\sqrt{1054 + \sqrt{196} + \sqrt{169} + \sqrt{64} }$

$\Rightarrow \sqrt{1054 + 14 + 13 + 8}$

⇒ √1089

⇒ 33

∴ The correct answer is 33.

Given:

Wages of total work = Rs.5400

X alone can do a work = 18.

Y alone can do a work = 24.

Calculation:

X alone can do a work = 18

So, work done by X in 1 day = 1/18

Y alone can do a work = 24

So, work done by Y in 1 day = 1/24

The assistance of Z they finished the work = 8 days

Thus, work done by (X + Y + Z) in 1 day = 1/8

So, work by z in 1 day = 1/8 -1/18-1/24 = 1/36

Z alone can do a work = 36 days

Ratio of time X : Y : Z = 18 : 24 : 36 = 3 : 4 : 6

Ratio of their efficiency X : Y : Z = 1/3 : 1/4 : 1/6 = 4 : 3 : 2

So, 4 + 3 + 2 = 9 unit = 5400

⇒ 1 unit = 600

⇒ 2 unit = 1200

Share of z = Rs.1200

∴ The correct answer is Rs.1200.

Shortcut TrickCalculation:

So, X + Y + Z = 9

⇒ 4 + 3 + Z = 9

⇒ Z = 9 - 7 = 2 units/day

Now, X + Y + Z = 9 units = Rs.5400

1 unit = Rs.600

2 units = Rs.1200

∴ The correct answer is Rs.1200.

Given:

Total distance = 12 km

Time to go upstream = 4 hours

Time to go downstream = 3 hours

Calculation:

Let the speed of boat = x km/h

& the speed of stream = y km/h

According to the question

⇒ 12/(x - y) = 4

⇒ x - y = 3      ----(1)

⇒ 12/(x + y) = 3

⇒ x + y = 4     ----(2)

From equation (1) and equation (2)

⇒ x = 3.5 and y = 0.5

The speed of the boat in still water is 3.5 km/h

∴ The correct answer is 3.5 km/h.

Shortcut TrickConcept used:

If the distance is constant then

Time ∝ (1/speed)

Calculation:

Now, 3 × 4 = 12 unit = 12 km

So, the upstream speed (x -y) = 3 km/h

Downstream speed (x + y) = 4 km/h

The speed of the boat in still water = (3 + 4)/2 = 3.5 km/h

∴ The correct answer is 3.5 km/h.

Calculation:

The language in which most of the workers in the MNC speak is D i.e. 180.

∴ The correct option is 3.

Calculation:

The total number of workers in the MNC = A + B + C + D + E + F + G

⇒ 100 + 140 + 20 + 180 + 50 + 70 + 160 = 720

∴ The correct answer is 720.

Calculation:

Total number of employees = 720

Total number of people sector A = 100

According to the question:

Total number of employees = 360° 

⇒ 720 = 360° 

The measure of the central angle of the sector A = 360/720 × 100 = 50°

∴ The correct answer is 50°.

Calculation:

Total number of employees = 720

average salary of total employees = 5000

So, total salary of employees = 5000 × 720 = 36,00,000

∴ The correct answer is $ 3.6 million.

Given:

The Area of rectangle = 288 cm²

Breadth = 16 cm

Formula used:

Area of the rectangle = l × b

Perimeters of the rectangle = 2(l + b)

Calculation:

Area of the rectangle = 288

⇒ l × b = 288

⇒ l × 16 = 288

⇒ l = 18

So, the length of the given rectangle = 18 cm

Perimeter of the given rectangle = 2(l + b)

⇒ 2(18 + 16) = 68 cm

∴ The correct answer is 68 cm.

Given:

Diameter of circle = 35 cm

Formula used:

area of circle = πr2

Calculation:

Diameter of circle = 35 cm

So, the radius of circle = 35/2

Area of circle = πr²

⇒ 22/7 × 35/2 × 35/2 = 962.5 cm²

∴ The correct answer is 962.5 cm2.

Given:

Diameter of hemisphere = 14 cm

Formula used:

Volume of hemisphere = 2/3 × πr³

Calculation:

Diameter of hemisphere = 14 cm

So, the radius of hemisphere = 14/2 = 7 cm

Volume of hemisphere = 2/3 × πr³

⇒ 2/3 × 22/7 × 7 × 7 × 7 = 718.67cm³

∴ The correct answer is 718.67cm3

Calculation:

⇒ (√2/3 - cosec60^o)

⇒ √2/3 - (2/√3)

⇒ (√6- 6)/3√3

∴ The correct answer is (√6- 6)/3√3.

Given: 

Cot x = 5/12

∠XYZ = 90°

Concept used:

Cot x = Base/Perpendicular

Calculation:

Cot x = XY/YZ = 5/12 =  Base/Perpendicular

Base = 5k; Perpendicular = 12k

In ∆XYZ

By Pythagoras Theorem

⇒ (ZX)² = (XY)² + (YZ)²

⇒ (ZX)² = (12k)² + 5k²

⇒ ZX = 13k

Sec Z = XZ/YZ = 13/12

∴ The correct answer is 13/12.

• Inferior good, in economics, is the good for which demand decreases when the consumer income rises, and demand increases when the consumer income decreases.
• In the case of normal goods, exactly the opposite is observed.

• Talcher is not a Nuclear Power Centre of India. It is a thermal power plant in the Odisha.
• In a nuclear plant, the heat source is from the nuclear reaction whereas in a thermal power plant it is from the combustion of coal.

The correct answer is Sen.

Key Points

• The 'noble tradition' was related to the Sen/Sena dynasty.
• The Sena dynasty was a Hindu dynasty of the Indian subcontinent in the late classical period.
• It ruled Bengal in the 11th and 12th centuries.

Additional Information

Rashtrakuta Dynasty:

• Between the eighth and the tenth century CE, they ruled parts of South India.
• They controlled the entire modern state of Karnataka as well as parts of the states of Tamil Nadu, Andhra Pradesh, Telangana, Maharashtra, and Gujarat.
• They were originally known as the feudatories of the Western Chalukyas of Vatapi.
• The Rashtrakuta dynasty was founded by Dhantidurga, who defeated the Chalukyas of Badami.
• The Rashtrakutas were known for their worship of Shiva and Vishnu.
• Taila II, a feudatory of Krisha III, overthrew the Rashtrakuta dynasty in 973 CE.
• Tailpa II was a descendant of the old Chalukya empire.
• The Chalukyas of Kalyani was later founded by Taipa II.

Pratihara dynasty:

• Pratihara dynasty was founded by King Harichandra at Mandore, a city near Jodhpur in 640 AD. Hence statement 4 is correct.
• King Nagbhatta I, who was fourth in line from Harishchandra, captured an area of Bhinmal, which used to be the capital of Gurjara. He earned the title of Gurjeshwar.
• This was the beginning of the Imperial Pratihar dynasty which produced great emperors such as Mihir Bhoj I.
• Mihir Bhoj I was the 6th and one of the most powerful emperors of the Imperial Pratihar dynasty who ruled from 836 AD to 885 AD.
• He made Kannauj his capital city and extended his empire from the foothills of the Himalayas to the river Narmada in the South and Bengal in the east.
• “Ghaznavid (a Persianate Muslim dynasty of Turkic mamluk origin) invasions weakened the Imperial Pratihars of Kannauj, who we finally defeated by the Rathores or Rashtrakuts.
• After the death of the last ruler in the early 11th century, the surviving leadership established the Gwalior Parihar dynasty and the Nagod Parihar dynasty.

Pal Dynasty:

• Pala dynasty ruled in Bihar and Bengal from the 8th to the 12th century.
• Its founder was Gopala.
• His successor was Dharmapala and he greatly expanded the Pala kingdom.
• Pala dynasty was a staunch follower of Mahayana and Tantric schools of Buddhism and created the environment for Buddhist monasteries including the Somapura Mahavihara.
• Govindapala was the last ruler of the Pala dynasty.
• During the time of Palas, classical Indian philosophy, literature, painting, and sculptures flourished
• They also patronized the great universities of Nalanda and Vikramashila.

The correct answer is Gujarat

Key Points

• Alauddin Khilji's first military operation was against Gujarat from 1299 to 1304. He later conquered Ranthambore in 1301, Chittor in 1303, Malwa in 1305, Siwana in 1308, and Jalore in 1311.
• Alauddin Khilji was the second ruler of the Khilji dynasty and the most powerful one who ruled the Delhi Sultanate.

The correct answer is Port Suez. 

Key Points

• The Suez Port is an Egyptian Port which is situated on the southern tip of the Suez Canal.
• The Suez Canal, situated in Egypt, is an artificial sea-level waterway which connects the Red Sea to the Mediterranean Sea through the Isthmus of Suez.

Additional Information

The correct answer is Odisha and Andhra Pradesh

Key Points

• The Machkund project is a joint project of the Government of Odisha and the Government of Andhra Pradesh.
• It is a hydroelectric project which is situated near the Duduma Falls between the Odisha and Andhra Pradesh border.
• The planning of the project began in the 1930s and its actual displacement started in the late 1940s.

The correct answer is Patanjali.

Key Points

• Yoga Darshana is defined as the yoga system of philosophy which is associated with Patanjali’s Yoga Sutras.
• Patanjali, a great sage, systematized and organized the study of the yogic teachings and the human internal states into 196 sutras. These sutras are called the Yoga Darshana.
• There are 6 darshans according to the Hindu philosophy, namely, Nyaya, Purva Mimansa, Yoga, Uttara Mimansa, Sankhya, and Vaisheshika.

The correct answer is New Delhi.

Key Points

• The 5th Global Conference on Cyber Space (GCCS) was held on November 23-24, 2017 in New Delhi, India.
• It is the world’s largest conference on cyberspace that took place outside the OECD nations for the first time.
• The theme of the 5th Global Conference on Cyber Space (GCCS), 2017 was ‘Cyber4All: An Inclusive, Sustainable, Developmental, Safe and Secure Cyberspace’.
• It was inaugurated by Prime Minister Narendra Modi.

The correct answer is Mutaz Essa Barshim.

Key Points

• Mutaz Essa Barshim from Qatar was honoured with the IAAF Male Athlete of the Year Award for 2017 at an award ceremony in Monaco in November 2017.
• The IAAF Female Athlete of the Year Award for 2017 was awarded to Nafissatou Thiam from Belgium.
• Usain Bolt from Jamaica, the retired sprinting legend received the IAAF President’s Award.

The correct answer is Hockey.

Key Points

• Field Hockey is the national sport of Pakistan.
• Field Hockey is also the national sport of India.
• Hockey is not a contact sport, so players may not trip, charge at, interfere with, touch, handle, or push any opponent.
• A field hockey match has four quarters with a two-minute break between the first and second as well as the third and fourth quarters.

​

Additional Information

• Football:
• One of the most watched games in the world.
• It is a game consisting of 11 players each.
• A team involves a goalkeeper and 10 field players.
• It involves several fundamental skills, which are to be learned to be able to play football like:

1. Shooting
2. Passing
3. Receiving, etc.

• Cricket :
• Cricket is a team game.
• It is played between two teams.
• It is governed by umpires and officials.
• It consists of a batting and a bowling team.
• A typical Cricket game has 11 players on each team.
• The center of the field is a rectangular area of 22 meters called a pitch.

The correct answer is To slow down its rate of setting.

Key Points

Gypsum: 

• Plaster of Paris changes into gypsum on mixing with water and is used for decoration.
• Plaster of Paris, commonly called P.O.P. is Calcium sulphate hemihydrate.
• The chemical formula of Plaster of Paris is CaSO4.1/2 H2O.
• Crystals of gypsum are produced when Plaster of Paris is mixed with water.
• Gypsum is calcium sulphate dihydrate (CaSO₄.2H₂O) and a mineral used in cement manufacturing.
• It helps in controlling the rate of hardening of the cement. A small amount of gypsum is added to the clinker upon its cooling during the final grinding process. It controls the setting of cement.
• If it isn’t added, the cement immediately sets post-mixing water and there is no time left for concrete placing.

Additional Information

Some common chemical compounds with their common names are:

The correct answer is γ - radiations.

Key Points

• The penetration power of alpha, beta, and gamma radiations vary greatly of which gamma radiations have the highest penetrating power.
• They are the most difficult to stop and can be blocked only by lead, concrete, or another heavy shielding.
• Alpha radiations can be blocked easily even with a few pieces of paper.
• Beta radiations can be stopped by aluminium foil but pass through the paper.

The correct answer Only II

Key Points

• The Executive refers to a smaller group of people who are responsible for implementing laws and running the government.
• The Constitution of India has recommended three organs of the state - the Judiciary, the Executive, and the Legislative.
• The Legislatives are the elected representatives, while the Judiciary is the system of courts in the country to stop any misuse of power by any branch of the government or country.

The correct answer is Italy

Key Points

• Fascism is a form of radical authoritarian nationalism that came to prominence in early 20th-century Europe, characterized by one-party totalitarian regimes run by charismatic dictators, glorification of violence, and racist ideology.
• The term "fascism" was invented by the Italian Fascist dictator Benito Mussolini (1883 - 1945) and the self-described "philosopher of Fascism" Giovanni Gentile (1875 - 1944).
• The Great Depression, which caused significant social unrest throughout the world, led to a major surge of fascism.
• Fascism was also popular during the Depression-era outside of Europe, in Japan, Brazil, and Argentina among other nations.
• The term originated in Italy and is derived from fascio, meaning a bundle of rods, and is used to symbolize strength through unity: a single rod is easily broken, while the bundle is difficult to break.
• After the end of World War I, fascism rose out of relative obscurity into international prominence, with fascist regimes forming most notably in Italy, Germany, and Japan, the three of which would be allied in World War II.​

The correct answer is Only I and II.

Key Points

• The sperms are transferred from the Vas deferens to the urethra after the collection of secretions from the Bulbourethral gland, Prostate gland, and Seminal vesicles.
• These glands provide the semen in bulk.

Additional Information

• Prostate gland
• The prostate gland is present below the urinary bladder.
• The prostate gland in males helps to control urination from the bladder.
• The prostate is a gland connected to the testicles at one end and the penis at the other end.
• While ejaculating the prostate stores semen and makes fluid which liquefies it before it ejects out of the penis.
• Seminal vesicles
• Seminal vesicles secrete seminal plasma which helps in providing nutrition, and protection and makes transport easy.
• ​​Scrotum
• The testes are situated outside the abdominal cavity within a pouch called the scrotum.
• The scrotum helps in maintaining the low temperature of the testes (2^o – 2.5^o C lower than the normal internal body temperature) necessary for **spermatogenesis.**​

The correct answer is Only I and II.

Explanation:

• Xylem is a kind of tissue in vascular plants which transports nutrients and water from the roots to the leaves.
• It is composed of 4 types of cells, which are tracheids, vessels, xylem fibres, and xylem parenchyma. Of these, xylem vessels and tracheids are tubular structures.

The correct answer is 18 to 40 years

Key Points

• The age limit for the Atal Pension Yojana is 18 to 40 years.
• The Atal Pension Yojana is a pension scheme started by the Government of India. It targets the unorganised sector and was launched by Prime Minister Narendra Modi in Kolkata on 9 May 2015.
• The start of the pension or the age of exit for this scheme would be 60 years. The subscribers can opt for a monthly pension from Rs.1000 to Rs.5000.