Chemical Reactions and Equations MCQ -

Chemical Reactions and Equations MCQ

Question 1 Which of the following is not a physical change?

(A) Dissolving of salt in water

(B) LPG Combustion of salt

(D) Formation of water vapor

Question 2 Which of the following is an exothermic reaction

(A) Sublimation of camphor crystals

(B) Sublimation of dry ice

(D) Reaction of water with limestone

Question 3 6Fe2O3 + 2Al → Al2O3 + 2Fe is a

(A) Double displacement reaction

(B) Displacement reaction

(D) Decomposition Reaction

Question 4 The addition of H2 and the reduction of O2 is called –

(A) Oxidation Reaction

(B) Corrosion Reaction

(D) Redox reaction

Question 5 The reactions in which heat is absorbed are called –

(A) Evaporation Reaction

(B) exothermic reaction

(D) exothermic reaction

Question 6 Which of the following is not a characteristic of a chemical change

(A) change in temperature

(B) change in color

(D) emission of gas

Question 7 The breakdown of food into carbon dioxide and water is a type of –

(A) Evaporation Reaction

(B) exothermic reaction

(D) exothermic reaction

Question 8 What is the name of the acid which dissolves gold and platinum?

(A) Nittic Acid

(B) Hydrochloric acid

(D) All of these

Question 9 The substances which take part in a chemical reaction are called –

(A) Atom

(B) Compound

(D) Product

Question 10 Dried fruits rot if not consumed for a long time because –

(A) Rusting

(B) Change in temperature

(D) Pernicious odor