Chemistry MCQs

Explore an extensive collection of Chemistry MCQs covering all key topics of Chemistry Mcqs are including organic chemistry, inorganic chemistry, physical chemistry, atomic structure, chemical bonding, stoichiometry, thermodynamics, kinetics, acids and bases, periodic table, and more. Perfect for students preparing for board exams, competitive tests, and university-level assessments in Pakistan

Chemistry MCQs

The unit of the rate constant (k) is same as that of rate of reaction________________?

A. First order reaction

B. Second order reaction

C. Zero order reaction

D. Third order reaction

Which of the following elements react with steam to produce H2 gas?

A. Pd

B. Ni

C. Sn

D. All of the above

Consider the following redox reaction. Zn+dil HNO3? Zn (NO3)2 + N2O + H2O The coefficient number of HNO3 in the equation is__________________?

A. 6

B. 8

C. 10

D. 4

A solution can be both____________________?

A. dilute and concentrated

B. dilute and saturated

C. saturated and unsaturated

D. saturated and super saturated

The unit of molality is__________________?

A. moles dm-3

B. moles kg-1

C. gram dm-3

D. none

Solubility of CaF2 is 2.0×10-4 gdm-3 then Ksp of CaF2 is_______________?

A. 4.0 x 10-8

B. 3.2 x 10-11

C. 2.0 x 10-8

D. 4.0 x 10-12

Which of the following points are important in connection with equilibrium constant ?

A. Kc is constant at given temperature

B. Kc is unaffected by change in concentration of reactants or products

C. Kc indicates the extent of reaction but not about the rate of reaction.

D. All of the above

Which of the following molecule is polar__________________?

A. CCI4

B. CO2

C. BF3

D. none of the above

Which of the following elements has greater 1st ionization energy__________________?

A. B

B. C

C. N

D. O

Which catalyst is used in contact process ?

A. Fe2O3

B. V2O5

C. SO3

D. Ag2O

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