WorksheetsChemical reactions
Total questions: 15
Worksheet time: 8mins
Which gas is evolved when zinc is added to dilute sulphuric acid?
Hydrogen
Oxygen
Sulphur dioxide
Sulphur trioxide
Which gas is evolved when sodium carbonate reacts dilute hydrochloric acid?
Carbon monoxide
Carbon dioxide
Chlorine
Sodium oxide
The colour of ferrous sulphate is :
Red
Yellow
Green
Blue
The compound 'calcium hydroxide' is known as :
Lime
Quicklime
Slacked lime
Lime water
Which gas is evolved when sodium carbonate reacts dilute hydrochloric acid?
Carbon monoxide
Carbon dioxide
Chlorine
Sodium oxide
Which gas is evolved when zinc is added to dilute sulphuric acid?
Hydrogen
Oxygen
Sulphur dioxide
Sulphur trioxide
Which gas is evolved when sodium carbonate reacts dilute hydrochloric acid?
Carbon monoxide
Carbon dioxide
Chlorine
Sodium oxide
Precipitate formed during any chemical reaction occurs in which state?
Solid
Liquid
Gaseous
Plasma
The colour of ferrous sulphate is :
Red
Yellow
Green
Blue
The compound 'calcium hydroxide' is known as :
Lime
Quicklime
Slacked lime
Lime water
Which of the following is an exothermic reaction?
Electrolysis of water
Photosynthesis
Burning of methane
Decomposition of calcium carbonate
Which of the following is an endothermic reaction?
Respiration
Slacking of lime
Formation of carbon monoxide
Formation of nitrogen monoxide
What does the symbol of 'aq' represents in a chemical reaction?
Aqifer
Aquaria
Aqueous
Aquatic
Which of the following does not involve a chemical reaction?
Digestion
Respiration
Burning of candle wax
Melting of candle wax
The chemical equations are balance to satisfy :
Law of conservation of momentum
Law of conservation of mass
Law of conservation of motion
Law of conservation of magnetism
