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
isotopes
Question: 2
Which of the following gases is the most soluble in water?
(A) CH4
(B) H2
(C) CO2
(D) NH3
Ans; D
NH3
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
barn
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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