SSC CHSL Previous Paper 23 (Held On: 11 Jul 2019 Shift 1) (Previous Year Paper)

• The correct answer is Option 1.
• The given sentence should be in the past tense i.e. 'promise' must be replaced by 'promised'. The infinitive verb follows the structure 'TO + V1' so replace 'to looked' with 'to look'.
• Therefore, the correct sentence is 'The minister promised to look into the matter of fuel emissions and air pollution.'

The correct answer is Option 2.

• The meaning of the given words:
• Submerged: Underwater, below the surface of a liquid.
• Succumbed: To die, to give up.
• Survived: To continue to live.
• Subsisted: To survive, to retain a certain state.

As the sentence is saying that the person was forced to go without water for four days and five nights, 'succumbed' is the right word to fill in the blank.

• The correct answer is Option 4.
• The meaning of the given words:
• Hope: the belief or expectation.
• Courage: The quality of being confident.
• Daring: Adventurous, courageous.
• Despair: To give up as beyond hope or expectation.
• Therefore, the word 'despair' is the antonym and all other options are not relevant.

The correct answer is Option 4. 

Explanation:

​Abstract: That which is apart from practice or reality.

• Vague: Not clearly expressed; stated in indefinite terms.
• Intangible: incapable of being perceived by the senses; incorporeal.
• Elusive: Evading capture, rarely seen.
• Concrete: Real, actual, tangible.

Therefore, out of given options 'concrete' is the antonym of the given word.

• The correct answer is Option 2.
• The meaning of the given options:
• Dedication: To commit to a particular course of thought or action
• Abrogation: The repeal or abolition of a law, right, or agreement
• Commitment: State of being pledged or engaged
• Contentment: the state or degree of being contented or satisfied
• Trepidation: A fearful state; agitation
• Therefore, out of given options, the best alternative to the word 'dedication' is 'commitment'.

• The correct answer is Option 2).
• The error lies in the wrong usage of the pronoun 'their' and should be replaced by 'Its' because team is a collective noun and all the members of the are working as one unit so its will be treated as a singular noun and the pronoun to be used is 'it'.
• Therefore, the correct sentence is 'The team began searching for reasons for its poor performance in the tournament.'

• The correct answer is Option 2.
• Sentence A is the only independent sentence among the given sentences, so A is the first sentence.
• Sentence A is talking about a journey which is continued by sentence D with an incident mentioning about dog chasing the bike.
• This sequence of AD is given only in option 2 i.e. ADBC

• The correct answer is Option 1.
• The correct spelling is 'fortieth'

• The correct answer is Option 3.
• The noun advice can be countable or uncountable. In more general, commonly used, contexts, the plural form will also be 'advice'.
• Therefore, all the options except 3 get eliminated.

• The correct answer is Option 3.
• Among the given sentences, there are two independent sentences i.e. B & C. But sentence B is introducing the subject i.e. 'fire' so B is the first sentence.
• Sentence C is talking about how the spark was produced which is continued by sentence D.
• Therefore, the correct sequence BCDA is given in option 3.

• The correct answer is Option 1.
• The given sentence when changed into its passive form the structure followed is 'was + V3'.
• Therefore, only Option 1 follows the structure and is grammatically correct.

The correct answer is option 3 i.e. Nearly.

Contextually only it can be the answer of the given blank.

Nearly- very close to; almost.

The correct answer is option 2 i.e. seems.

Grammatically only this is correct.

will + v1, Was + v3 ( seen ), singular sub - singular verb should come.

The chosen option is correct.

The correct answer is option 1 i.e. A.

A wide variety is a phrase and it always occurs in this form.

So, the chosen option is correct.

The correct answer is option 4 i.e. This.

Contextually only this can be the suitable choice to choose as the answer.

This shows current situation and we are talking about the it so this will be correct choice.

The correct answer is option 4 i.e. towards.

Whenever we have to point out the direction we use adverb like towards, inwards, outwards etc.

So, the towards will be the right choice here.

The correct answer is option 2.

If will be used as the conjunction.

have will be changed into had.

sentence will be in assertive form.

He will be used as the subject.

All these are being fulfilled by option 2.

So, this is the correct choice.

The correct answer is option 2 i.e. florist.

Explanation:

• Let's look at the meaning of the given options. 
• nutritionist- a person who studies or is an expert in nutrition.
• florist- a person who sells and arranges cut flowers.
• agriculturist-someone concerned with the science or art or business of cultivating the soil.
• botanist- an expert in or student of the scientific study of plants.
• Hence from the given meanings, we find that the correct answer is Option 2 i.e florist.

The correct answer is option 1 i.e. precise.

Explanation:

ACCURATE- (especially of information, measurements, or predictions) correct in all details; exact.

precise- marked by exactness and accuracy of expression or detail.

Chosen option best expresses the meaning of the given word.

The correct answer is option 2 i.e. dispose of quickly.

Key Points

• The phrase "make short work of something" means to quickly and efficiently complete a task or overcome a challenge.

It implies that the person involved is highly skilled or efficient, allowing them to accomplish the task or overcome the challenge in a short amount of time or with minimal effort.

• It often conveys a sense of ease or mastery in handling the situation.
• Example: The experienced chef made short work of preparing the elaborate five-course meal for the guests.
• Thus, the correct answer is Option 2.

The correct Answer is 'Option 2 i.e. Manageable'.

Key Points

• Manageable (प्रबंधनीय) - Capable of being managed or controlled.
• Example: The project was manageable and within budget.

Therefore, the correct answer is - Option 2

Additional Information

• Option 1: manageble - Incorrect spelling
• Option 3: managable - Incorrect spelling
• Option 4: manegeeable - Incorrect spelling

The correct answer is option 1) i.e. impetus.

• impetus: something that makes a process or activity happen or happen more quickly. This fits best in the context of the given sentence, hence, it will be used to fill in the blank.
• impression: an effect produced on someone.
• inspiration: the process of being mentally stimulated to do or feel something.
• insight: an accurate and deep understanding.

The correct answer is option 1) i.e. unable to progress ahead.

• make no headway is used when someone is not making any progress ahead.
• This is opposite of make headway which means to move forward or make progress.

The correct answer is option 3) i.e. sufficient evidences to.

• Evidence is an uncountable noun. Hence, we cannot make a plural of it by adding 's' at the end of it.

To make Plural: 'pieces of' will be added i.e 'pieces of evidence'.

• So, the correct sentence will be: She was unable to produce sufficient evidence to support her accusations.
• Other uncountable nouns are: Furniture, information, luggage, jewellery, scenery, postage, percentage, etc.

The correct answer is option 3) i.e. cartographer.

• Cartographer: a person who draws or produces maps.
• Draftsman: a person who drafts legal documents.
• Photographer: a person who takes photographs, especially as a job.
• Designer: a person who plans the look or workings of something prior to it being made.

The pattern followed here is:

The next number in the given series is obtained by adding a consecutive prime number to the previous number.

2 + 2 = 4,

4 + 3 = 7,

7 + 5 = 12,

12 + 7 = 19,

19 + 11 = 30,

30 + 13 = 43

Hence, “43” is the correct answer.

In the given series, the figure is being rotated at 90 degrees in the clockwise direction.

Hence, “option 3” is the correct answer.

The pattern followed here is:

All the numbers are multiples of prime numbers except for 75.

19 × 5 = 95,

17 × 5 = 85,

13 × 5 = 65,

15 × 5 = 75

Hence, “75” is the correct answer.

The patterns in options 1 and 3 are adjacent to the pattern in question. Therefore, options 1 and 3 get eliminated.

Now, we end up with the below situation after rotation of the second position of the given dice:

This is not possible.

Therefore, option 4 gets eliminated.

Hence, the figure in option 2 is the correct answer.

The pattern followed here is:

Hence, “JN” is the correct answer.

The pattern followed here is:

Similarly,

Hence, “CRFKF” is the correct answer.

Given: 5 + 8 - 30 × 10 ÷ 2 = 240

1. • and –

5 – 8 + 30 × 10 ÷ 2

= 5 – 8 + 30 × 5

= 5 – 8 + 150

= 155 – 8

= 147 ≠ 240

2. × and –

5 + 8 × 30 – 10 ÷ 2

= 5 + 240 – 5

= 245 – 5

= 240

3. • and ÷

5 ÷ 8 – 30 × 10 + 2

= 0.625 – 300 + 2

= 2.625 - 300

= -297.375 ≠ 240

4. × and ÷

5 + 8 - 30 ÷ 10 × 2

= 5 + 8 – 3 × 2

= 5 + 8 – 6

= 13 – 6

= 7 ≠ 240

Hence, ‘‘× and –’’ is the correct answer.

Except Ship, all others are vehicles for road transport.

Ship is a vehicle for water transport.

Hence, “ship” is the correct answer.

Total triangles are:

ABG, ACG, ABC, BEH, BHC, BEC, CDE, CID, EFI, DIF, DEF.

Hence, “11” is the correct answer.

The pattern is as follows:

29, 31 → both are consecutive prime numbers.

1. 20, 21 → No number is a prime number.

2. 15, 17 → 15 is not a prime number.

3. 11, 13 → both are consecutive prime numbers.

4. 23, 25 → 25 is not a prime number.

Hence, “11, 13” is the correct answer.

The correct sequence as per English dictionary is as follows:

2. Earth

3. Jupiter

4. Mars

5. Mercury

6. Venus

Hence, “2, 3, 5, 1, 4” is the correct answer.

The pattern followed here is:

Reverse letter-pair combination for BARBER: YZIYVI

Now, Y + Z + I + Y + V + I = 25 + 26 + 9 + 25 + 22 + 9 = 116

Thus, the code for BARBER is 116.

Reverse letter-pair combination for GLINT: TORMG

T + O + R + M + G = 20 + 15 + 18 + 13 + 7 = 73

Thus, the code for GLINT is 73.

Similarly,

Reverse letter-pair combination for LIZARD: ORAZIW

O + R + A + I + Z + W = 15 + 18 + 1 + 9 + 26 + 23 = 92

Hence, 92 is the code for LIZARD.

The pattern followed here is:

1. DFHJ → D + 2 = F, F + 2 = H, H + 2 = J

2. JLNP → J + 2 = L, L + 2 = N, N + 2 = P

3. CEGI → C + 2 = E, E + 2 = G, G + 2 = I

4. QSUV → Q + 2 = S, S + 2 = U, U + 2 = W ≠ V

Hence, “QSUV” is the correct answer.

The pattern is as follows:

Given: Cement : Building → Cement is used to make building.

Similarly,

Wood : Furniture → Wood is used to make Furniture.

Hence, “wood : furniture” is the correct answer.

All are unique creatures on the earth.

Rats → Rodents, Frogs → Amphibians, Snakes → Reptiles

Hence, “option 4” is the correct answer.

The work of an Engineer involves the construction of Buildings.

Similarly,

The work of Writer involves writing books.

Hence, “Book” is the correct answer.

When unfolded the paper will look like the below figure:

Hence, “option 2” is the correct answer.

The mirror image of the question figure is as follows:

Hence, “option 1” is the correct answer.

The pattern followed here is:

The first letter of the second group is obtained by adding 4 letters to it.

The second letter of the second group is obtained by adding 10 letters to it.

Similarly,

Hence, “LW” is the correct answer.

We’ll divide 2013 in different years

2000 years + 12 years + 2013 ( Jan + Feb + March + April + May + June + July + till 15 august)

There are 3 leap years and 9 non-leap years from 2001 to 2012. Therefore, no. of odd days in this period = 1

Also, 2013 is a non-leap year.

Thus, odd days in the given above years = [0 + 1 + (3 + 0 + 3 + 2 + 3 + 2 + 3 + 1)] mod 7

Total odd days = 18 and  18 ÷ 7 = 4 (remainder)

Days codes:

Code 4 is for Thursday.

Hence, “Thursday” is the correct answer.

The question figure is embedded in the below figure:

Hence, “option 2” is the correct answer.

The pattern followed here is:

Given: (49, 81, 121) → 7² , 9² , 11² (square of alternate numbers is taken)

1. (16, 64, 100) → 4² , 8² , 10² (4, 8, 10 are not alternate numbers)
2. (16, 25, 49) → 4² , 5² , 7² (4, 5, 7 are not alternate numbers)
3. (36, 64, 100) → 6² , 8² , 10² (6, 8, 10 are alternate numbers)
4. (9, 4, 8) → 3² , 2² , (2√2)² (3, 2, (2√2)² are not alternate numbers)

Hence, “(36, 64, 100)” is the correct answer.

The pattern followed here is:

(16, 36, 64) → 16 + 20 = 36 and 36 + 28 = 64.

Similarly,

(10, 30, 58) → 10 + 20 = 30 and 30 + 28 = 58

Hence, (10, 30, 58) is the correct answer.

Using the below table of symbols, we can draw the family tree:

The family tree is as follows:

Hence, “wife” is the correct answer.

The possible diagram is as follows:

Explanation:

I. All hens are lions → True (All hens are eggs, which are Lions. So, all hens are lions is correct).

II. Some lions are eggs → True (All eggs are lions. So, some lions will definitely be eggs).

III. All birds are lions → True (All birds are eggs, which are lions. So, all birds are lions is correct).

Hence, “all the conclusions follow” is the correct answer.

Calculation:

For a number to be divisible by 24,

it should be divisible by 8 and 3.

For a number to be divisible by 8,

the last three digits should be divisible by 8.

For,

y = 4, the last three digits,

i.e, 048 is divisible by 8.

For a number to be divisible by 3,

the sum of the digits should be divisible by 3.

⇒ 20 + x should be divisible by 3

For x = 1, 20 + x = 21 is divisible by 3

⇒ x = 1 and y = 4

∴ x + y = 1 + 4 = 5.

The question has clearly mentioned X ≠ 0 and y ≠ 0

Let the second discount be x%.

⇒ 900 × (100 – 20)/100 × (100 – x)/100 = 648

⇒ 900 × 80/100 × (100 – x)/100 = 648

⇒ 100 – x = (648 × 100 × 100)/(900 × 80)

⇒ 100 – x = 90

⇒ x = 10%

$\frac{{18.43 \times 18.43 - 6.57 \times 6.57}}{{11.86}}$

⇒ $\frac{{{{\left( {18.43} \right)}^2} - {{\left( {6.57} \right)}^2}}}{{18.43 - 6.57}}$

⇒ $\frac{{\left( {18.43 - 6.57} \right)\left( {18.43 + 6.57} \right)}}{{18.43 - 6.57}}$

⇒ 18.43 + 6.57

⇒ 25

For an equilateral triangle, the circumcenter, centroid, incentre and orthocenter are identical.

(3x + 1)³ + (x – 3)³ + (4 – 2x)³ + 6(3x + 1)(x – 3)(x – 2) = 0

⇒ (3x + 1)³ + (x – 3)³ + (4 – 2x)³ – 3(3x + 1)(x – 3)(4 – 2x) = 0

⇒ (3x + 1)³ + (x – 3)³ + (4 – 2x)³ = 3(3x + 1)(x – 3)(4 – 2x)

We have, If a³ + b³ + c³ = 3 abc, then a + b + c = 0

⇒ (3x + 1) + (x – 3) + (4 – 2x) = 0

⇒ 2x + 2 = 0

⇒ 2x = -2

⇒ x = -1

The maximum value of sin α is 1.

⇒ α = 90°

⇒ sin ∝1 + sin ∝2 + sin ∝3 ………. + sin ∝20 = 1 + 1 + 1 + ... up to 20 terms

⇒ sin ∝1 + sin ∝2 + sin ∝3 ………. + sin ∝20 = sin 90° + sin90° + ... up to 20 terms

⇒ ∝1 = ∝2 = ∝3 = ... = ∝20 = 90°

⇒ (∝1 + ∝2 + ∝3 + … … + ∝20) = 90° + 90° + ... up to 20 terms

⇒ (∝1 + ∝2 + ∝3 + … … + ∝20) = 90° × 20 = 1800°

Let the athlete runs from A to B in 1 minute and the coach and the physiotherapist observe him from point C and P respectively

Given, ∠ACB = 72°

The angle subtended by the arc at the centre is double of the angle subtended by the arc at a point on the circle.

⇒ ∠APB = 2 × 72 = 144°

Hence, according to physiotherapist the athlete covers an angle of 144° per minute

∴ In 1 second, the angle covered by the athlete according to physiotherapist = 144/60 = 2.4°

The aggregate marks scored by B = (50 × 6/15) + (50 × 5/15) + (30 × 4/15) = 44.66

The aggregate marks scored by C = (70 × 6/15) + (80 × 5/15) + (60 × 4/15) = 70.66

The aggregate marks scored by D = (80 × 6/15) + (70 × 5/15) + (30 × 4/15) = 63.33

∴ The ascending order = B, D, C

ΔABC ∼ ΔDEF

⇒ AB/DE = Perimeter of ΔABC/Perimeter of ΔDEF

⇒ AB/9 = 64/48

⇒ AB = 64/48 × 9

∴ AB = 12 cm

The full marks of paper = 300

⇒ The full marks of Theory, Practical and Project is 100 each

In order to pass one has to score at least 40%, 50% and 50% respectively in X, Y, Z and 60% in aggregate.

The marks scored by each of B and D in Z is 30, which is less than 50%.

The aggregate marks of A = (60 × 6/15) + (70 × 5/15) + (50 × 4/15) = 60.66 = 60.66%

The aggregate marks scored by C = (70 × 6/15) + (80 × 5/15) + (60 × 4/15) = 70.66 = 70.66%

∴ B and D could not pass the exam

Let the amount invested be Rs. 100 and the rate of interest be x

Simple interest for 5 year = PRT/100 = (100 × x × 5)/100 = 5x

⇒ Amount at the end of 5 years = P + I = 100 + 5x

Simple interest for 3 years = PRT/100 = (100 × x × 3)/100 = 3x

Amount at the end of 3 years = P + I = 100 + 3x

According to question:

100 + 5x = 5/4(100 + 3x)

⇒ 400 + 20x = 500 + 15x

⇒ 5x = 100

⇒ x = 20%

Shortcut Trick

Substitute the standard trigonometric values: cosec 30° = 2, sin 45° = 1/√2, sec 60° = 2, and tan 30° = 1/√3.

Expression = 2² + (1/√2)² + 2² + (1/√3)²

Expression = 4 + 1/2 + 4 + 1/3

Expression = 8 + (3 + 2) ÷ 6 = 8 + 5/6 = 53/6

∴ The correct answer is 53/6.

Alternate Method

Given: cosec² 30° + sin² 45° + sec² 60° + tan² 30°

Formula Used: Values of Trigonometric Ratios for specific angles.

⇒ cosec 30° = 2

⇒ sin 45° = 1/√2

⇒ sec 60° = 2

⇒ tan 30° = 1/√3

⇒ Value = (2)² + (1/√2)² + (2)² + (1/√3)²

⇒ Value = 4 + 1/2 + 4 + 1/3

⇒ Value = 8 + (3 + 2) ÷ 6

⇒ Value = 8 + 5/6 = 53/6

Thus, the final calculated value corresponds to option (3).

∴ The correct answer is 53/6.

Additional Information

Trigonometric Table Values

Values for common angles: sin 30° = 1/2, sin 45° = 1/√2, cos 60° = 1/2, tan 30° = 1/√3, and cot 45° = 1.

Reciprocal Relations

cosec θ = 1 ÷ sin θ | sec θ = 1 ÷ cos θ | cot θ = 1 ÷ tan θ.

Square Identities

sin²θ + cos²θ = 1 | sec²θ − tan²θ = 1 | cosec²θ − cot²θ = 1.

By hit and trial method:

Taking the value of θ = 90°

L.H.S.

√3 cosθ + sinθ

= √3 cos90° + sin90°

= √3 (0) + 1

= 1

= R.H.S.

∴ θ = 90°

We know, Average of quantities = sum of all quantities/no. of quantities

The average of 1088 numbers is zero.

So, the summation of 1088 numbers = 1088 × 0 = 0

If the summation of 1087 numbers = - (1088^th number) then only summation of 1088 number will be zero.

∴ Out of 1088 numbers, at most 1087 numbers may be greater than zero.

Marks scored by B in practical = 50

Marks scored by C in practical = 80

∴ Required percentage = (80 - 50)/50 × 100 = 60%

Let the number be x

Given: x² /(1/x³) = 243/16807

⇒ x⁵ = 243/16807

⇒ x = (243/16807)^1/5

∴ x = 3/7

A completes a piece of work in 20 days.

⇒ One day work of A = 1/20

B completes 20% of the work in 6 days.

⇒ B will complete 100% of the work in 6 × 100/20 = 30 days.

One day work of B = 1/30

When A and B work together, their one day work = 1/20 + 1/30

⇒ (3 + 2)/60

⇒ 5/60

⇒ 1/12

⇒ A and B working together can complete the whole work in 12 days.

∴ A and B together can complete 50% of the work in 12/2 = 6 days

$\frac{{10}}{7}\left( {1 - 2.43 \times ;{{10}^{ - 3}}} \right)$ = 1.417 + x

⇒ $\frac{{10}}{7}\left( {1 - 0.00243} \right)$ = 1.417 + x

⇒ $\frac{{10}}{7}$ × 0.99757 = 1.417 + x

⇒ 1.4251 = 1.417 + x

⇒ x = 1.4251 – 1.417

∴ x = 0.0081

Selling price of first article = 200 × 105/100 = Rs. 210

Selling price of second article = 300 × 110/100 = Rs. 330

Total selling price = 210 + 330 = Rs. 540

Total cost price = 200 + 300 = Rs. 500

∴ Overall gain percentage = (540 – 500)/500 × 100 = 8%

Let the number be x.

According to the question:

X – 1/x = 25/100 × (x + 1/x)

⇒ x² – 1 = ¼ (x² + 1)

⇒ 4x² – 4 = x² + 1

⇒ 3x² = 5

⇒ x² = 5/3

⇒ x⁴ = 25/9

∴ Required percentage = $\frac{{\left( {\frac{{25}}{9} - \frac{5}{3}} \right)}}{{\frac{5}{3}}} \times 100 = 66.7\%$

\left{ {1\frac{1}{4};of;\left( {2\frac{1}{3} \div 1\frac{2}{5}} \right) - 1\frac{5}{{12}}} \right} + \frac{1}{9} \div 2\frac{1}{3} + \frac{2}{7} + \frac{1}{6}

⇒ \left{ {\frac{5}{4};of;\left( {\frac{7}{3} \div \frac{7}{5}} \right) - \frac{{17}}{{12}}} \right} + \frac{1}{9} \div \frac{7}{3} + \frac{2}{7} + \frac{1}{6}

⇒ \left{ {\frac{5}{4} \times \left( {\frac{7}{3} \times \frac{5}{7}} \right) - \frac{{17}}{{12}}} \right} + \frac{1}{9} \times \frac{3}{7} + \frac{2}{7} + \frac{1}{6}

⇒ \left{ {\frac{{25}}{{12}} - \frac{{17}}{{12}}} \right} + \frac{1}{{21}} + \frac{2}{7} + \frac{1}{6}

⇒ $\frac{8}{{12}} + \frac{1}{{21}} + \frac{2}{7} + \frac{1}{6}$

⇒ $\frac{{56; + ;4; + ;24; + ;14}}{{84}}$

⇒ $\frac{{98}}{{84}}$

⇒ $\frac{7}{6}$

Let two chords AB and CD intersect inside the circle at the point O:

Hence intersecting chords theorem is used which means that the products of the lengths of the line segments on each chord are equal

AO × OB = CO × DO

⇒ x(10 – x) = 1.5 × 12.5

⇒ 10x – x² = 18.75

⇒ x² – 10x + 18.75 = 0

⇒ 100x² – 1000x + 1875 = 0

⇒ 4x² – 40x + 75 = 0

⇒ 4x² – 30x – 10x + 75 = 0

⇒ 2x(2x – 15) – 5(2x – 15) = 0

⇒ (2x – 5)(2x – 15) = 0

⇒ x = 5/2 or x = 15/2

When x = 5/2,

(10 – x) = (10 – 5/2) = 15/2

When x = 15/2,

(10 – x) = (10 – 15/2) = 5/2

∴ The ratio of the larger and smaller among AO and BO = 15/2: 5/2 = 3: 1

In a rhombus, the diagonals bisect each other at right angle

Let the diagonal AC = 14 cm and BD = 48 cm

⇒ AO = 14/2 = 7 cm and BO = 48/2 = 24 cm

In ΔAOB, AB² = AO² + BO²

⇒ AB² = 7² + 24²

⇒ AB² = 49 + 576

⇒ AB² = 625

⇒ AB = 25 cm

∴ Perimeter of the rhombus = 4 × side of rhombus = 4 × 25 = 100 cm

Shortcut Trick

Total distance = Length of Bridge + Length of Platform + Length of Train

Total distance = 1200 m + 400 m + 200 m = 1800 m

Speed = 72 km/h = 72 × (5/18) = 20 m/s

Time = 1800 / 20 = 90 seconds = 1.5 min

∴ The correct answer is 1.5 min.

Alternate Method

Given:

Length of Bridge = 1.2 km = 1200 m

Length of Platform = 400 m

Length of Train = 200 m

Speed of Train = 72 km/h

Formula Used:

Time = Total Distance ÷ Speed

Calculations:

⇒ Total Distance = 1200 + 400 + 200 = 1800 m

⇒ Speed in m/s = 72 × (5/18) = 20 m/s

⇒ Time (in sec) = 1800 ÷ 20 = 90 seconds

⇒ Time (in min) = 90 ÷ 60 = 1.5 min

∴ The correct answer is 1.5 min.

Additional Information

Unit Conversion

To convert km/h to m/s, multiply by 5/18. To convert m/s to km/h, multiply by 18/5.

Total Distance for Crossing

When a train crosses a stationary object of length L, the total distance covered is Length of Train + L.

Average Speed

Average speed = Total Distance ÷ Total Time. For two equal distances with speeds x and y, Average Speed = 2xy / (x+y).

∴ Average marks of the four students in theory = (60 + 50 + 70 + 80)/4 = 65

The correct answer is option 4, i.e. Potassium.

• Potassium is the most common electrolyte for the human body.
• Hypokalaemia is a disease caused by a lower level of potassium.
• Potassium is very important electrolytes required in the formation of Adenosine triphosphate(ATP) and Na-K ATPase pump.

The correct answer is option 1, i.e. Rajatarangini.

• Rajatarangini literally translates to ‘The River of Kings’.
• This work in Sanskrit was authored by Historian Kalhana in the 12^th century.
• It is divided into eight books each of which is called ‘Tarang’.
• Rajatarangini tells the history of Kashmir.

The correct answer is option 2, i.e. Metropolitan Area Network.

• MAN is Metropolitan Area Network and is used to connect two or more LANs in a common geographic area: say a city or a group of buildings.
• MANs can span in the range of 5 to 50 kilometers in diameter.
• MANs usually are not owned by a single organization, they are owned by an association of users or by a single network provider who sells the service to the users.
• It interconnects users with computer resources in a geographic area or region larger than that covered by even a large local area network (LAN) but smaller than the area covered by a wide area network (WAN).

The correct answer is option 3, i.e. Football.

• Rovers Cup is related to football.
• It was a Football tournament started by British football lovers in 1891 in Bombay.
• The inaugural year witnessed the 1^st Worcester Regiment as the winner.

The correct answer is option 4, i.e. Kanshi Ram.

• The Bahujan Samaj Party (BSP), English Majority People’s Party, national political party in India.
• It was formed on the birth anniversary of B. R. Ambedkar, 14 April 1984, by Kanshi Ram.
• It represents the lowest level of peoples at the Hindu social system.
• The designated members are of the Scheduled Castes, Scheduled Tribes, and Other Backward Classes as well as other religious and social minorities.

The correct answer is option 3, i.e. Chilika-Andhra Pradesh.

The correct answer is option 3, i.e. Kuchipudi - Odisha is incorrect.

The correct answer is option 4, i.e. the socio-economic status of Muslim community in India.

• The Prime Minister issued a Notification On March 9, 2005, for the constitution of a High Level Committee to prepare a report on the social, economic and educational status of the Muslim community of India.
• The seven-member High Level Committee,chaired by Justice Rajindar Sachar,
• This committee submitted its final report to the Prime Minister on November 17, 2006.
• The Government tabled the Justice Rajindar Sachar Committee Report in Parliament on November 30^th.

The correct answer is option 4,i.e. Indian Financial System Code.

• IFSC stands for Indian Financial System Code.
• It is represented by the 11 digits alpha-numeric character.
• We can usually see it on your bank’s cheque leaves, or other bank sponsored material.
• This code helps identify the individual bank branches that participate in the various online money transfer options like NEFT and RTGS.

The correct answer is option 4, i.e. Zürich

• The headquarters of Federation Internationale de Football Association (FIFA) is located at Zurich, Switzerland.
• It was founded in Paris, France on 21 May 1904.
• It organises various major football tournaments which include the FIFA World Cup.
• Gianni Infantino is the current president of FIFA.
• Brazil is the most successful team in the FIFA world cup with 5 titles.
• FIFA 2018 was played in Russia.
• It was won by France and the runner up was Croatia. (Capital - Zagreb)

The correct answer is option 3,i.e. Ireland.

• Ireland has become the second country in the world to declare a climate and biodiversity emergency.
• It happened after the Oireachtas (Irish parliament) report on Climate Action was accepted by the government and opposition parties without a vote.
• Ireland followed in the footsteps of the United Kingdom, which declared a climate emergency earlier this month after 16-year-old Swedish climate activist Greta Thunberg addressed MPs urging more climate action and in the wake of protests by climate action group Extinction Rebellion.

The correct answer is option 2, i.e. Badminton.

• India’s chief national badminton coach Pullela Gopichand was bestowed an honorary doctorate by Indian Institute of Technology, Kanpur, on the occasion of its 52^nd convocation.
• The coach extraordinaire along with Infosys chairperson Sudha Murthy and Tessy Thomas, director-general of aeronautical systems at the Defence Research and Development Organisation, received this honour from former Indian Space Research Organisation chairman professor K. Radhakrishnan, chairman of the board of governors of IIT, Kanpur.
• They joined an elite list of recipients including former president professor A. P. J. Abdul Kalam and former prime minister Manmohan Singh.

The correct answer is option 4, i.e. Sabarmati.

• Sabarmati River is the west-flowing river.
• It originates from the Dhebar Lake in Aravalli range at Udaipur, Rajasthan.
• It finally merges with the Arabian Sea at the Gulf of Cambay/Khambhat after covering a distance of 371 km.
• Gomti, Krishna and Mahanadi all are east-flowing rivers.

The correct answer is option 3, i.e. Grassland.

• Grassland is a terrestrial habitat as it is entirely on land.
• Aquatic habitat simply refers to a habitat either surrounded by or completely submerged in a water body like ponds, lagoon, swamps, etc
• Chilka lake in Odhisa is the largest saltwater Lagoon Lake in India.

The correct answer is option 4, i.e. YS Jagan Mohan Reddy.

• YS Jagan Mohan Reddy has taken oath as Chief Minister of Andhra Pradesh on 30^th May 2019.
• Governor ESL Narasimhan administered him the oath of office and secrecy at Indira Gandhi Municipal Stadium in Vijayawada.

The correct answer is option 3, i.e. Zonel Sougaijam.

• Zonel Sougaijam is a civil engineer and he is 22-year-old.
• He is from Imphal, Manipur.
• He was awarded USD 5000 by facebook.
• This technology giant also included him in the 'Facebook Hall of Fame 2019', for detecting the WhatsApp bug.

The correct answer is option 4, i.e. Planck's Constant.

• India has adopted a global resolution to redefine four of the seven base units - kilogramme, kelvin, mole and ampere.
• A resolution to redefine four of the seven base units was passed by representatives of 60 countries at the General Conference on Weights and Measures (CGPM) of the International Bureau of Weights and Measures (BIPM), Paris on November 16 last year.
• The kilogram has been defined since 1889 by a shiny piece of platinum-iridium held in Paris. All modern mass measurements are traceable back to it - from micrograms of pharmaceutical medicines to kilos of apples and pears and tonnes of steel or cement.
• The new SI System will be helpful in bringing in accuracy while dealing with international trade, biotechnology, high-tech manufacturing and human health and safety.
• The new definition of kg involves accurate weighing machines called 'Kibble balance', which uses Planck's Constant to measure the mass of an object using a precisely measured electromagnetic force.

The correct answer is option 3, i.e. California.

• Intel or also known as in Intel Corporation is an American manufacturer of semiconductor computer circuits.
• It is headquartered in Santa Clara, California.
• From “integrated electronics” the intel name has been derived.
• Intel was founded by two American engineers Robert Noyce and Gordon Moore in July 1968.
• The CEO of the company is Bob Swan.

The correct answer is option 4, i.e. Vaigai.

• Vaigai is a river in Tamil Nadu state, southern India, it flowing 240 km generally southeast.
• It originated in the Varushanad Hills of western Tamil Nadu, it initially flows northeast through the Kambam and Varushanad valleys.
• After the central reaches, the Vaigai flows eastward into the Vaigai reservoir at Narasingapuram.
• Near Sholavandan it bends to the southeast, passing Madurai on its course to its mouth on Palk Strait, which separates the southeastern coast of India from Sri Lanka.
• The Vaigai River rarely floods; its chief tributaries are the Siruliar, Theniar, Varaha Nadi, and Mangalar.
• Amaravati, Bhavani and Kabini are the tributaries of river Kaveri.

The correct answer is option 3, i.e. Chenab.

• Salal power station is a run-of-the-river scheme.
• It installed with a capacity of 690 MW to harnesses the Hydropower potential of river Chenab.
• It is located in Reasi district of Jammu & Kashmir.
• The beneficiary states of this power station are Chandigarh, Delhi, Himachal Pradesh, Haryana, Jammu & Kashmir, Punjab, Rajasthan, Uttrakhand & Uttar Pradesh.

The correct answer is option 4, i.e. Kapila.

• Samkhya also spelt Sankhya, one of the six systems of Indian philosophy.

The correct answer is option 2, i.e. Benjamin Netanyahu.

The correct answer is option 4, i.e. Chhau.

Key Points

• Chhau dance included in UNESCO's Intangible Heritage list in the year 2010.
• Chhau, a unique form of masked dance, is preserved by the royal family of Saraikela, the former state of Jharkhand.
• The dancer employs a deity, animal, bird, hunter, rainbow, night, or flower.

Additional Information

• The name of the folk dances and their respective states name are given below:

The correct answer is option 2, i.e. Article 75.

• According to Article 75 of Indian Constitution, the ministers are collectively responsible to the Parliament in general and to the Lok Sabha in particular.
• Lok Sabha is the bridge between the Executive (Laws implemented by the Executive) and the Legislature (Laws framed) after deliberations on the laws in force and making the necessary amendments based on the current social, political and economic fabric of our country.
• The Lok Sabha is the lower house of our bicameral Parliament.
• The total number of Council of Ministers, which includes the Prime Minister, shall not exceed fifteen per cent of the total number of members of Lok Sabha.

The correct answer is option 1, i.e. Nirmala Sitaraman.

• Nirmala Sitharaman is the recent Finance minister in the present Lok Sabha.
• She forayed into politics in 2008 as a member of BJP and spent the remnants of her time as a spokesperson of the party until she was inducted into Narendra Modi's cabinet in 2014.
• She was elected to Rajya Sabha in 2014 and subsequently in 2016.
• She served as the Minister of Defense, the second woman to hold the post since Indira Gandhi.