NTPC CBT-2 Chemistry Quiz

Question 1:

Ant sting cause red, swollen mark on the skin that may be very itchy. This is due to injection of-

Lactic acid

Methanoic acid

Maleic acid

Oleic acid

Question 2:

A silver ware is kept in a solution of copper sulphate. What change do you expect?

Silver displaces the copper

Blue colour of copper sulphate disappear

Formation of silver mirror on the walls of test tubes

No reaction takes place

Question 3:

Match List I and List II

A-II,B-I,C-III,D-I

A-I,B-I,C-III,D-I

A-II,B-II,C-III,D-II

A-II,B-II,C-III,D-I

Question 4:

Which of the following is used for silvering of mirror ?

Silver chloride

Silver nitrate

Silver bromide

Silver sulphate

Question 5:

The number of maximum electrons in N Shell is

2

8

18

32

Question 6:

Which among the following is non polar molecule?

$\mathrm{NH}_{3}$

$\mathrm{H}_{2} \mathrm{O}$

$\mathrm{NF}_{3}$

$\mathrm{BF}_{3}$

Question 7:

Tools made of brass are known to have extended life and a reduced need for sharpening. The brass tools are made up of -

Cu and Zn

Cu and Sn

Pb and Sn

Cu, Zn, Tn

Question 8:

Which of the following is true about vitamins?

Vitamins in the human body are needed in large amounts
Vitamins are secreted by the ductless gland
Vitamin A, D, E, and K are fat-soluble .
Vitamin B and C are water-soluble

Only 3

Both 3 and 4

Both 1 and 4

Both 2 and 3

Question 9:

Which one of the following statements is correct?

Both boiling and evaporation are surface phenomena.

Boiling is a surface phenomenon, but evaporation is a bulk phenomenon.

Both boiling and evaporation are bulk phenomena.

Boiling is a bulk phenomenon, but evaporation is a surface phenomenon.

Question 10:

The electronic configuration of chloride ion is ?

2,8,7

2,8,6

2,8,8

2,8

NTPC CBT-2 Chemistry Quiz - 19

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NTPC CBT-2 Chemistry Quiz - 19

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