Class 10 Balancing Chemical Equations Test 2

This is a physical change

• The process of rusting of iron

• The process of addition of powdered lime to water

• The process of Respiration

• Changing water to ice

The process of ripening of mango is

• Physical change
• Chemical change
• Not a change
• No answer

This is a physical change

• The process of rusting of iron

• The process of addition of powdered lime to water

• The process of Respiration

• Evaporation of water to water vapour

What is the colour of copper sulphate crystals?

• Red

• White

• Blue

• Yellow

This is a Chemical change

• Burning of crackers

• Changing water to ice

• Cooling of water vapour to water

• Boiling of water

This is a physical change

• The process of rusting of iron
• The process of addition of powdered lime to water
• The process of Respiration is
• Cooling of water vapour to water

This is a Chemical change

• The process of digestion

• Changing water to ice

• Cooling of water vapour to water

• Melting of ice to water

A chemical reaction.

• Storing of oxygen gas in cylinders
• Liquification of gas
• Melting of ice to water
• Heating of copper wire at high temperature in air

What is formed when Magnesium is burnt in air?

• Blue coloured Magnesium oxide
• Green coloured Magnesium oxide
• White coloured Magnesium oxide
• Red coloured Magnesium oxide

This is a Chemical change

• The process of ripening of mango

• Changing water to ice

• Cooling of water vapour to water

• Melting of ice to water