TNPSC Group 4 Previous Year Question Paper Pdf Download - 1

Question: 1

What is a laughing gas?

(A) Sulphur dioxide

(B) Hydrogen peroxide

(C) Carbon monoxide

(D) Nitrous oxide

Question: 2

Which one among the following most correctly determines the atomic number of an element?

(A) Number of ions

(B) Number of nucleons

(C) Number of protons

(D) Number of protons and electrons

Question: 3

Which of the following metals can deposit copper from copper sulphate solution?

(A) Gold

(B) Iron

(C) Mercury

(D) Platinum

Question: 4

In terms of magnetic properties, oxygen belongs to

(A) diamagnetic materials

(B) paramagnetic materials

(C) magnetic materials

(D) ferromagnetic materials

Question: 5

Which one of the following is used in dry cleaning of garments?

(A) Asphalt

(B) Diesel oil

(C) Lubricating oil

(D) Naphtha