Question # 1

When methane is burnt in air, CO2 and.......... are formed.

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O2

H2O

Glucose

Energy

During photosynthesis in plants, carbon dioxide CO2 and water react to produce.

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Water

Energy

Glucoe

CO2

Substancs whihc take part in a chemical reaction are called.

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Products

Ractants

Elements

Compunds

Thermal decompositionof calcium carbonate produces a gas.

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Oxygen

Carbon di oxide

Nitrogen

Carbon monoxide

During a chemical reaction, total mass of the product is equal to the total mass of reactants, this is a statements of.

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Law of conservation of momentum

Law of conservation of energy

Law of conseration of mass

Law of conseration of acceleration

Law fo conservation of mass was put forward by

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Newton

Plank's

Lavoisier

Einstein

Carbon burns in air to release energy along with the formation of.

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Carbon dioxide and hydrogen

Carbon monoxide and hydrogen

Carbon di oxide

Carbon dioixe and water

Law of conservation of mass put forward in.

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1783

1784

1785

1786

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Science 8th Class Urdu Medium Chapter 6 Online Test MCQs With Answers

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