PG TRB Model Question Paper for Chemistry with Answer - 4

Question: 16

Nitric acid is manufactured by

(A) Solvay process

(B) Ostwald’s process

(C) Haber process

(D) Contact process

Question: 17

Which one is a sublime substance?

(A) Iodine

(B) Sugar

(C) Potassium iodide

(D) Table salt

Question: 18

Mendeleev’s periodic table was formulated based on

(A) Atomic number

(B) Atomic mass

(C) Mass number

(D) Number of neutrons

Question: 19

In the second period, which of the following is a semi metal?

(A) Lithium

(B) Beryllium

(C) Carbon

(D) Boron

Question: 20

The temperature at which the catalytic activity of the catalyst is maximum, is called?

(A) Absolute temperature

(B) Optimum temperature

(C) Critical temperature

(D) Room temperature