Formation of clouds is a
  • seasonal change
  • fast change
  • slow change
  • Man-made change
Which of the following statement is not applicable for physical change
  • It is reversible
  • It changes the molecular composition
  • Generally, no new products are formed
  • All of the above statements are true
the process of changing steam to ice involves
  • Freezing then condensation
  • Evaporation then condensation
  • Condensation then freezing
  • Evaporation then freezing
Which of the following is both reversible and irreversible.
  • Rusting of iron
  • Melting of wax
  • Forestation or de forestation
  • No such case possible
Which of the following is false?
  • Burning of the candle is a chemical change.
  • Change of season is a natural change.
  • ii. Formation of curd is a chemical change.
  • Ripening of mango is a reversible change.
Match the column
class6-science-change-around-us-1.png
  • a-iii , b-ii , c-iv, d-i
  • a-iii , b-i , c-iv, d-ii
  • a-ii , b-i , c-iv, d-iii
  • a-iii , b-iv , c-i, d-ii
Choose the odd one out  
  • change of day and night
  • dissolving salt in water in laboratory
  • change of season
  • the dissolved salt in sea water
Which of the following changes cannot be reversed?
  • Blowing of a balloon
  • Drying a wet cloth
  • Baking cake in an oven
  • Folding a paper to make a toy aeroplane
Which of the following is a chemical change?
  • Breaking of glass beaker
  • Blowing of balloon
  • Ploughing of field
  • Baking cake
Salt can be separated from its solution (salt dissolved in water), because
  • mixing of salt in water is a change that can be reversed by heating and melting of salt
  • mixing of salt in water is a change that cannot be reversed
  • mixing of salt in water is a permanent change.
  • The mixing of salt in water is a change that can be reversed by evaporation.
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