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Learn UPSC MCQs with answers [Page 1 of Department 75]

M

Mr. Dubey • 51.43K Points
Coach 

2) Water is not effective in extinguishing a fire caused by petrol because

(A) The flame is too hot for water to cool it down
(B) Water and petrol react chemically
(C) Water and petrol are miscible with each other
(D) Water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn
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Correct Answer - Option (D)

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

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M

Mr. Dubey • 51.43K Points
Coach 

4) Helium gas is used in gas balloons instead of hydrogen gas because it is

(A) Lighter than hydrogen
(B) More abundant than hydrogen
(C) Non-combustible
(D) More stable
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Correct Answer - Option (C)

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

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M

Mr. Dubey • 51.43K Points
Coach 

5) Which of the following is used as non-stick coating for cooking utensils?

(A) Perspex
(B) Styrofoam
(C) Polystyrene
(D) Teflon
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Correct Answer - Option (D)

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

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M

Mr. Dubey • 51.43K Points
Coach 

6) Which of the following is used to make light weight, but strong plastic ?

(A) Nylon
(B) Polythene
(C) Polyvinyl Chloride
(D) Methyl Methacrylate
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Correct Answer - Option (C)

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

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T

Tina Singh • 10.78K Points
Tutor II 

7) Source of infection in diseases like Tuberculosis, Mumps and Whooping cough is

(A) Direct contact
(B) Droplets of saliva
(C) Carrier organism
(D) A vector
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Correct Answer - Option (B)

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

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You are learning MCQ Questions of UPSC Department : 75 | Page : 1

Departments: Each department has 200 Multiple choice questions.
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