8th class Science Chapter 6 online mcq test with answers for chapter 6

Top Scorers Of Chapter 6 "General Science 8th Class English Medium Chapter 6 Online Test" MCQ`s Test

Sr.#	Question	Answer
1	Law fo conservation of mass was put forward by	A. Newton B. Plank's C. Lavoisier D. Einstein
2	The chemicla reaction during which a compound splits up into two or more simple substanes, is called.	A. Additon reaction B. Decomposition C. Replacement reaction D. Balanced reaction
3	When methane is burnt in air, CO2 and.......... are formed.	A. O2 B. H2O C. Glucose D. Energy
4	Exothermic reaction ae those reactions durng which heat is.	A. Given out B. Remain same C. Absorbed D. Used
5	Fire works is an example of ........... reactions.	A. Addition B. Exothermic C. Endothermic D. Decomposition
6	Symbol and formulae of the reactants are written on....... side fo arrow.	A. Left B. Right C. Upward D. Both side
7	The reaction between calcium oxide and carbon dioxide to form calcium carbonate is an example of.	A. Decomposition reaction B. Addition reaction C. Acid-Base reaction D. Neutralizaion reaction
8	The product fo the reaction between zinc and dilute sulphuric acid are.	A. Zinc oxide and water B. Zinc sulphide and water C. Zinc sulphate and hydrogen D. Zinc sulphide and hydrogen
9	How many oxygen atoms are present in onw molecule of Mg(HCO3)2	A. 2 B. 4 C. 6 D. 8
10	During a chemical reaction, total mass of the product is equal to the total mass of reactants, this is a statements of.	A. Law of conservation of momentum B. Law of conservation of energy C. Law of conseration of mass D. Law of conseration of acceleration