Chemistry Quiz Questions and Answers for Class 12, 11, 10, 9, 8, 7, 6 - 2

Question: 6

When acetone is reduced with zinc amalgam and HCL, it gives

(A) Propane

(B) Propan-1-ol

(C) Propan-2-ol

(D) Propan-2-al

Question: 7

A device used for the measurement of radioactivity is

(A) G.M. counter

(B) Nuclear reactor

(C) Cyclotron

(D) Mass spectrometer

Question: 8

Sulphur reacts with sodium hydroxide to form

(A) Sodium sulphite

(B) Sodium thiosulphate

(C) Sodium sulphide

(D) Sodium sulphate

Question: 9

Which of the following valency is not exhibited by sulphur?

(A) 2

(B) 3

(C) 4

(D) 6

Question: 10

The percentage of gold in 18 carats gold is

(A) 25%

(B) 75%

(C) 91.6%

(D) 100%