1000+ Stoichiometry Objective Questions and Answers Pdf - 1

Question: 1

Atoms of the same element, but of different masses are called

(A) isotopes

(B) isobars

(C) isotones

(D) none of these

Ans: A


Question: 2

Which of the following gases is the most soluble in water?

(A) CH4

(B) H2

(C) CO2

(D) NH3

Ans; D


Question: 3

In physical adsorption, as compared to chemisorption, the

(A) heat of absorption is very large

(B) activation energy is very high

(C) rate of absorption is controlled by the resistance to surface reaction

(D) quantity absorbed per unit mass is higher

Ans: D

quantity absorbed per unit mass is higher

Question: 4

Which of the following is not a unit of length?

(A) angstrom

(B) barn

(C) parsec

(D) fermi

Ans: B


Question: 5

Elements in a periodic table are arranged in order of their

(A) atomic number

(B) atomic weight

(C) mass number

(D) metallic characteristics

Ans: A

atomic number

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