Zn + H2 → Zn + H2O
(A) H2
(B) ZnO
(C) Zn
(D) O
Answer: (C) Zn
Category: Chemistry MCQs Class 9
Chemistry solved multiple choice questions (MCQs) for class 9 with answers.
A student mixed a solute in a solvent and made a mixture. After 15 minutes, he/she observed that solute has settled down. He/she will call this mixture as:
(A) True solution
(B) Colloidal solution
(C) Homogeneous mixture
(D) Suspension
Answer: (D) Suspension
Bromine has melting point of -7°C and boiling point of 59°C. What is the physical state of Bromine at 100°C?
(A) Gas
(B) Liquid
(C) Solid
(D) Cannot be predicted
Answer: (A) Gas
Which of the following molecules has triple covalent bond between its atoms?
(A) H2
(B) N2
(C) O2
(D) F2
Answer: (B) N2
Which one of the following elements belongs to Group III A of the periodic table?
(A) Mg
(B) K
(C) AI
(D) Si
Answer: (C) AI