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Question 461

Kolkata Police Constable 2018• Test

If the length of a rectangle increases by 15% and the width decreases by 15%, what will be the percentage change in its area?

  1. AOption (a)

    \(\frac{3}{4}\) % decrease

  2. BOption (b)

    \(2\frac{1}{4}\) % decrease

  3. COption (c)

    \(\frac{2}{5}\) % increase

  4. DOption (d)

    No change

View answer & explanation

Correct answer

Answer: (a)A.

\(\frac{3}{4}\) % decrease

Explanation not yet available.

Question 462

Kolkata Police Constable 2018• Test

A clock in a kitchen runs 8.5 seconds per hour while the fire is burning and 5.1 seconds per hour while the fire is not burning. The clock displays accurate time in a total of 48 hours. How long does the fire burn in 48 hours?

  1. AOption (a)

    16 hours

  2. BOption (b)

    18 hours

  3. COption (c)

    20 hours

  4. DOption (d)

    22 hours

View answer & explanation

Correct answer

Answer: (a)A.

16 hours

Explanation not yet available.

Question 463

Kolkata Police Constable 2018• Test

Haemoglobin : Iron : : Chlorophyll : ?

  1. AOption (a)

    Copper

  2. BOption (b)

    Magnesium

  3. COption (c)

    Cobalt

  4. DOption (d)

    Calcium

View answer & explanation

Correct answer

Answer: (a)A.

Copper

Explanation not yet available.

Question 464

Kolkata Police Constable 2018• Test

Arrange it in descending order.

\(\frac{31}{50}\), √.49, ·629, (0.8)2

  1. AOption (a)

    \(\frac{31}{50}\), √.49, .629, (0.8)2

  2. BOption (b)

    √.49, (0.8)2, .629, \(\frac{31}{50}\)

  3. COption (c)

    (0.8)2, ·629, \(\frac{31}{50}\), √.49

  4. DOption (d)

    .629, \(\frac{31}{50}\), √.49, (0.8)2

View answer & explanation

Correct answer

Answer: (a)A.

\(\frac{31}{50}\), √.49, .629, (0.8)2

Explanation not yet available.

Question 465

Kolkata Police Constable 2018• Test

Rahi Sarnobat is associated with which sport?

  1. AOption (a)

    Table Tennis

  2. BOption (b)

    Shooting

  3. COption (c)

    Badminton

  4. DOption (d)

    Hockey

View answer & explanation

Correct answer

Answer: (a)A.

Table Tennis

Explanation not yet available.

Question 466

Kolkata Police Constable 2018• Test

Out of the four alternatives suggested, select the one which best expresses the same sentence in indirect speech:

The peon said to his officer; "Please forgive me".

  1. AOption (a)

    The peon requested his officer that he forgive him.

  2. BOption (b)

    The peon requested his officer to forgive him.

  3. COption (c)

    The peon said to his officer that he should forgive him.

  4. DOption (d)

    The peon told his officer to please forgive him.

View answer & explanation

Correct answer

Answer: (a)A.

The peon requested his officer that he forgive him.

Explanation not yet available.

Question 467

Kolkata Police Constable 2018• Test

What is Philosopher's Wool?

  1. AOption (a)

    Zinc chloride

  2. BOption (b)

    Zinc oxide

  3. COption (c)

    Zinc Nitate

  4. DOption (d)

    Zinc bromide

View answer & explanation

Correct answer

Answer: (a)A.

Zinc chloride

Explanation not yet available.

Question 468

Kolkata Police Constable 2018• Test

'Aga Khan Cup' is associated with which sport?

  1. AOption (a)

    Polo

  2. BOption (b)

    Cricket

  3. COption (c)

    Hockey

  4. DOption (d)

    Badminton

View answer & explanation

Correct answer

Answer: (a)A.

Polo

Explanation not yet available.

Question 469

Kolkata Police Constable 2018• Test

Out of the four alternatives, choose the one which can be substituted for the given words/sentence.

Incapable of making errors

  1. AOption (a)

    Infallible

  2. BOption (b)

    Incorrigible

  3. COption (c)

    Irreparable

  4. DOption (d)

    Erroneous

View answer & explanation

Correct answer

Answer: (a)A.

Infallible

Explanation not yet available.

Question 470

Kolkata Police Constable 2018• Test

Which number will replace the question mark (?)?

3, 7, 23, 95, ?

  1. AOption (a)

    62

  2. BOption (b)

    128

  3. COption (c)

    479

  4. DOption (d)

    575

View answer & explanation

Correct answer

Answer: (a)A.

62

Explanation not yet available.