CHEMICAL REACTIONS

Front

Which gas is evolved when zinc is added to dilute sulphuric acid?

Back

Hydrogen

Front

Which gas is evolved when sodium carbonate reacts with dilute hydrochloric acid?

Back

Carbon dioxide

Front

Precipitate formed during any chemical reaction occurs in which state?

Solid

,

Liquid

,

Gaseous

,

Plasma

Back

Solid

Front

The colour of ferrous sulphate is:

Back

Green

Front

The compound 'calcium hydroxide' is known as: Lime, Quicklime, Slacked lime, Lime water

Back

Slacked lime

Front

Which of the following is an exothermic reaction?

Electrolysis of water

,

Photosynthesis

,

Burning of methane

,

Decomposition of calcium carbonate

Back

Burning of methane

Front

Which of the following is an endothermic reaction?

Respiration

,

Slacking of lime

,

Formation of carbon monoxide

,

Formation of nitrogen monoxide

Back

Formation of nitrogen monoxide

Front

What does the symbol of 'aq' represent in a chemical reaction?

Back

Aqueous

Front

Which of the following does not involve a chemical reaction? Digestion, Respiration, Burning of candle wax, Melting of candle wax

Back

Melting of candle wax

Front

The chemical equations are balanced to satisfy:

Back

Law of conservation of mass