TNPSC Group 4 Study Material in Tamil and English - 1

Question: 1

The most electronegative element among the following is

(A) Sulphur

(B) Sodium

(C) Fluorine

(D) Oxygen

Question: 2

What is the main component of natural gas?

(A) Ethane

(B) Butane

(C) Methane

(D) Hydrogen

Question: 3

Which of the following substance is used in the form of solder in the soldering process?

(A) Aluminium and Iron

(B) Aluminium and Lead

(C) Iron and Tin

(D) Lead and Tin

Question: 4

Which variety of glass is heat resistant?

(A) Flint glass

(B) Pyrex glass

(C) Hard glass

(D) Bottle glass

Question: 5

The gas usually filled in electric bulb is

(A) Oxygen

(B) Hydrogen

(C) Carbon dioxide

(D) Nitrogen