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Question 261

WB Police SI 2023• Test

By which amendment of the Indian Constitution can the words 'Socialist' and 'Secular' be added to the Preamble?

  1. AOption (a)

    41

  2. BOption (b)

    52

  3. COption (c)

    37

  4. DOption (d)

    42

View answer & explanation

Correct answer

Answer: (d)D.

42

Why this answer is correct

The correct answer is 42.

Key Points

  • The 42nd Amendment changed the description of India from a "sovereign democratic republic" to a "socialist secular democratic republic", and also changed the words "unity of the nation" to "unity and integrity of the nation".
  • Amendment passed during an internal emergency by Indira Gandhi

Additional Information

  • The 43rd Amendment repealed six articles: 31D, 32A, 131A, 144A, 226A, and 228A.
  • Articles 145, 228, and 366 were amended to facilitate the omission of these six articles.
  • In the 36th Amendment Formation of Sikkim as a State within the Indian Union was constituted.
  • The 44th Amendment provides for human rights safeguards and mechanisms to prevent abuse of executive and legislative authority. Annuls some Amendments enacted in Amendment Bill 42.
  • Amendment passed after the revocation of internal emergency in the Country.

Question 262

WB Police SI 2023• Test

Analyze the above image and say which Indian painter is not a poet?

  1. AOption (a)

    D

  2. BOption (b)

    F

  3. COption (c)

    G

  4. DOption (d)

    E

View answer & explanation

Correct answer

Answer: (b)B.

F

Why this answer is correct

Indian painter is not a poet → F

Question 263

WB Police SI 2023• Test

If the average of two numbers is 9 and the average of other three numbers is 4, what is the average of those 5 numbers?

  1. AOption (a)

    4

  2. BOption (b)

    6

  3. COption (c)

    7

  4. DOption (d)

    5

View answer & explanation

Correct answer

Answer: (b)B.

6

Why this answer is correct

Solution:

The average of two numbers is 9, so the sum of those two numbers is 2 * 9 = 18.

The average of three numbers is 4, so the sum of those three numbers is 3 * 4 = 12.

The sum of all five numbers is 18 + 12 = 30.

The average of those 5 numbers is 30 / 5 = 6.

Question 264

WB Police SI 2023• Test

A total of 52 students are standing in a line. Ram is 18 ahead of Shyam. Shyam is 13th from last. How many people are ahead of Ram from the front?

  1. AOption (a)

    21

  2. BOption (b)

    22

  3. COption (c)

    20

  4. DOption (d)

    19

View answer & explanation

Correct answer

Answer: (a)A.

21

Why this answer is correct

As per the information given,

From front, 21 people are ahead of  Ram.

Question 265

WB Police SI 2023• Test

60% of how much rupees is equal to \(83\frac{1}{3}\)% of 90 rupees?

  1. AOption (a)

    175

  2. BOption (b)

    125

  3. COption (c)

    160

  4. DOption (d)

    135

View answer & explanation

Correct answer

Answer: (b)B.

125

Why this answer is correct

Solution:

Let x be the number of rupees in question. We are given that 60% of x is equal to 83(1/3) % of 90 rupees.

60/100 * x = 83.33/100 * 90

60/100 * x = 250/3 * 3

x = 250/3 * 3 * 100/60

x = 125

Therefore, the answer is 125

Question 266

WB Police SI 2023• Test

Which of the following is an example of a liquid metal?

  1. AOption (a)

    Sodium

  2. BOption (b)

    Gold

  3. COption (c)

    Mercury

  4. DOption (d)

    Iron

View answer & explanation

Correct answer

Answer: (c)C.

Mercury

Why this answer is correct

The correct answer is Mercury.

 Key Points

  • Mercury is the only metal that is liquid at standard temperature and pressure.
  • It is used in barometers, manometers, thermometers, and other scientific apparatus.

 Additional Information

  • Sodium, gold, and iron are all examples of metals, but they are solid at standard temperatures and pressure.

Question 267

WB Police SI 2023• Test

If Z = 1, A = 26 and GOAT = 65, then FATI = ?

  1. AOption (a)

    72

  2. BOption (b)

    82

  3. COption (c)

    68

  4. DOption (d)

    78

View answer & explanation

Correct answer

Answer: (a)A.

72

Why this answer is correct

ABCDEFGHIJKLM
26252423222120191817161514
12345678910111213
ZYXWVUTSRQPON

 

G (20) + O (12) + A (26) + T (7) = 65

Similarly,

F (21) + A (26) + T (7) + I (18) = 72

Question 268

WB Police SI 2023• Test

Muhammad bin Tughluq shifted his capital from Delhi to where?

  1. AOption (a)

    Devgiri

  2. BOption (b)

    Kanauj 

  3. COption (c)

    Tanjore 

  4. DOption (d)

    Pataliputra 

View answer & explanation

Correct answer

Answer: (a)A.

Devgiri

Why this answer is correct

The correct answer is Devgiri.

Key Points

  • Muhammad bin Tughlaq succeeded to the throne of the Delhi in 1325 CE.
  • Muhammad Tughluq adopted a number of administrative measures.
  • But, a large portion of these failed because of his fretfulness and absence of judgment.
  • In 1327 CE, Muhammad-Bin-Tughlaq shifted his capital from Delhi to Daulatabad or Devgiri.
  • This was done to control his empire effectively as Daulatabad was centrally located.
  • In this exodus, the Imperial Court and establishments were shifted initially followed by the citizens.
  • The distance between Delhi and Daulatabad was around 1500 km.
  • During migration, many people died because of the harsh weather.
  • Those who reached Daulatabad experienced health issues and found it difficult to adjust in South India.
  • In the following years, the courts and people were shifted back to Delhi.
  • Thus, taking this measure was a huge blunder on the part of Muhammad-Bin-Tughlaq.

Question 269

WB Police SI 2023• Test

Shatabdi Express departs from Howrah to New Jalpaiguri at a speed of 100 kmph and returns at a speed of 120 kmph. What is the average speed of Shatabdi Express? (kmph)

  1. AOption (a)

    110

  2. BOption (b)

    \(111\frac{1}{{11}}\)

  3. COption (c)

    \(119\frac{1}{{11}}\)

  4. DOption (d)

    \(109\frac{1}{{11}}\)

View answer & explanation

Correct answer

Answer: (d)D.

\(109\frac{1}{{11}}\)

Why this answer is correct

Solution:

The average speed of Shatabdi Express is calculated using the formula for the harmonic mean of two numbers.

The harmonic mean of two numbers a and b is given by 2ab/(a+b).

In this case, a is the speed of Shatabdi Express from Howrah to New Jalpaiguri, which is 100 kmph, and b is the speed of Shatabdi Express from New Jalpaiguri to Howrah, which is 120 kmph.

Plugging these values into the formula, we get:

2 * 100 * 120 / (100 + 120) = 24000 / 220 = 109(1/11) kmph

So, the average speed of Shatabdi Express is 109(1/11) kmph.

Question 270

WB Police SI 2023• Test

A sum of money amounts 3 times the interest in 20 years. What is the annual rate of interest?

  1. AOption (a)

    5

  2. BOption (b)

    15

  3. COption (c)

    20

  4. DOption (d)

    10

View answer & explanation

Correct answer

Answer: (d)D.

10

Why this answer is correct

Given:

A sum of money triples itself

Time = 20 years

Concept used:

Simple interest = (Principal × Time × Rate) /100

Interest = Amount - Principal

Calculation:

Let the principal be x

Then, Amount = 3x

Interest = 3x – x = 2x

⇒ 2x = (x × 20 × R)/100

⇒ R = 10%

∴ The rate of interest is 10%