Foundation level II(Chemistry)NEET Mock test 2

Which among the following is a chemical change

• Boiling of water
• Melting of ice
• Dissolving sugar in water
• Burning of wood

What is the formula for Rust?

• FeO

• None of these

Which one of the following is a physical change?

• Burning of wood
• Rusting of iron
• Photosynthesis in plants
• Melting of ice

Photosynthesis is a____

• chemical reaction
• animal behavior
• type of weather
• human activity

The gas in the atmosphere which acts as a natural shield against ultraviolet radiation is

• Carbon Dioxide
• Nitrogen
• Oxygen
• Ozone

  In which type of change a new substance is formed?

• Physical change
• Chemical change
• State change
• Temperature change

Which method is used to prevent rusting?

• Applying oil or grease
• Exposing to air
• Submerging in water
• Heating to high temperatures

Which among the following is a physical change?

• Burning of wood
• Rusting of iron
• Photosynthesis
• Melting of ice

 How crystal of pure substances are obtained?

• By filtration

• By decantation

• By sedimentation

• By crystallisation

What is the formula for rust?

• None of these