TNPSC Group 4 Chemistry Question Paper with Answers - 2

Question: 6

Hydrometer is an instrument

(A) To detect the changes in atmospheric humidity

(B) For measuring the specific gravity of liquids

(C) To detect the presence of hydrogen in the atmosphere

(D) For measuring sound in water

Question: 7

Which one of the following pairs of metals constitutes the lightest metal and the heaviest metal, respectively?

(A) Aluminium and mercury

(B) Aluminium and osmium

(C) Lithium and osmium

(D) Lithium and mercury

Question: 8

What is the average pH value of the milk?

(A) 5.6

(B) 6.6

(C) 7.6

(D) 8.6

Question: 9

The gas used to fill up the tyres of the aircraft is

(A) Neon

(B) Nitrogen

(C) Hydrogen

(D) Helium

Question: 10

–CHO is the functional group of

(A) Aldehyde

(B) Alcohol

(C) Ketone

(D) Carboxylic acid