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BSEB 12th Chemistry Most Important Objective MCQ Question Chapter Wise 6. GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS 1. Which one of the following is not an ore of zinc ? (A) Zinc blende (B) Calamine (C) Zincite (D) Bauxite Answer :- (D) 2. Which of the following metals does not liberate hydrogen gas on reactions […]
BSEB 12th Chemistry Important Objective Question on Latest Pattern Surface Chemistry Chapter 5. SURFACE CHEMISTRY 1. Tyndall effect is not found is : (A) sugar solution (B) colloidal solution of gold (C) suspension (D) emulsion Answer :- (A) 2. Chemical adsorption reaction is : (A) reversible (B) irreversible (C) polymerisation (D) none of these Answer […]
12th Board Chemistry Most VVI Objective Question Chemical Kinetics Chapter 4. CHEMICAL KINETICS 1. In any reaction, catalyst: (A) retards the rate of reaction (B) increases the rate of reaction (C) both increases and decreases the rate of reaction (D) none of these Answer :- (C) 2. In chemical equation H2(g) + I2 (g) ⇔ […]