TRB Model Question Papers with Answer in Chemistry - 4

Question: 16

Source of vitamin C is

(A) Ascorbic acid

(B) Nitric acid

(C) Maleic acid

(D) Oxalic acid

Question: 17

Which of the following is the most common element in the universe?

(A) Carbon

(B) Hydrogen

(C) Nitrogen

(D) Oxygen

Question: 18

An ideal gas is one which obeys

(A) Charle’s law

(B) Avogadro’s law

(C) Boyle’s laws

(D) Gas laws

Question: 19

Which one of the following noble gases is not found in the atmosphere?

(A) Xenon

(B) Radon

(C) Krypton

(D) Argon

Question: 20

The atomic number of Magnesium is 12. The number of neutrons in Magnesium atom is

(A) 10

(B) 11

(C) 12

(D) 13