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Learn POLICE CONSTABLE MCQs with answers [Page 1 of Department 69]

R

Ram Sharma • 178.08K Points
Coach

1) Cocking gas is a mixture of

(A) butane & propane
(B) carbon dioxide & oxygen
(C) carbon monoxide & carbon dioxide
(D) methane & ethylene
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

2) A catalyst is a substance which

(A) Changes the equilibrium of a reaction so that the concentration of the product increases
(B) Increases the activation energy
(C) Increases the rate of reaction and increases the equilibrium concentration of products
(D) Hastens the attainment of equilibrium
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

3) Which among the given statements about the physical properties of metal is not right?

(A) All metals are solid except mercury
(B) Most metals are hard except sodium and potassium
(C) Most metals are ductile
(D) Metals are not malleable
Correct Answer - Option (D)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

4) To draw maximum current from a combination of cells, how should the cells be grouped?

(A) Depends upon the relative values of external and internal resistance
(B) Mixed
(C) Series
(D) Parallel
Correct Answer - Option (A)

No Explanation found. Add Explanation and get +2 points.

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R

Ram Sharma • 178.08K Points
Coach

6) A fractionating column is a glass apparatus used to

(A) Separate a mixture in water
(B) Separate two or more liquids
(C) Extract oils from vegetable matter
(D) Separate magnetic solids from nonmagnetic solids
Correct Answer - Option (B)

No Explanation found. Add Explanation and get +2 points.

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P

Pradeep Sikarwar • 9.01K Points
Tutor III

8) Correct the given sentence gramatically.
Shreya, who she is my best friend, is a singer.

(A) Shreya, she who is my best friend, is a singer.
(B) Shreya, who is my best friend, is a singer.
(C) Shreya, is my best friend, who she is a singer.
(D) All of the above
Correct Answer - Option (B)

Explanation :
The relative pronoun acts as the subject or object of the relative clause. It replaces words like she, he, him, her, they, them etc. It is, therefore, wrong to repeat the pronoun in the relative clause.

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