Category: Chemistry MCQs FPSC NTS PPSC Past Papers Test Questions

(A) DNA replication
(B) storing energy
(C) signaling
(D) acting as structural components of cell membranes

The answer is: (A) DNA replication

(A) Diamond
(B) Graphite
(C) Coal
(D) Buckminsterfullerene

The answer is: (C) Coal

Q. The molecular geometry of CH₄ is
(A) linear
(B) tetrahedral
(C) trigonal planar
(D) T-shaped

The answer is: (B) tetrahedral

Q. The molecular geometry of XeF₂ is
(A) linear
(B) tetrahedral
(C) trigonal planar
(D) T-shaped

The answer is: (A) linear

Q. If 4.0 g of a gas occupies 11.2 L at 0.0^oC and 0.25 atmosphere, then the molecular mass of the gas is
(A) 24 g
(B) 32 g
(C) 40 g
(D) 48 g

The answer is: (D) 48 g

(A) photochemistry
(B) spectroscopy
(C) thermochemistry
(D) surface science

The answer is: (B) spectroscopy

Q. What is the chemical equation: CH₄ + 2O₂ →
(A) CO₂ + O₂2H₂
(B) CO₂ + 2H₂O
(C) C + O₂ + 2H₂O
(D) None of these

The answer is: (B) CO₂ + 2H₂O

(A) HNO₂ only
(B) HNO₃ only
(C) HNO₂ and NO
(D) HNO₃ and NO

The answer is: (D) HNO₃ and NO

(A) Glucose
(B) Benzene
(C) Hydrocarbon
(D) Amino Acid

The answer is: (B) Benzene

(A) Diamond
(B) Graphite
(C) Cobalt
(D) Tungsten

The answer is: (A) Diamond