Physical and Chemical Changes

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Question

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Question 1 :

Melting of ice is a

1. Both physical and chemical change
2. Physical change
3. Periodic change
4. Chemical change
Answer
17490

Question 2 :

Which of these is the smallest particle?

1. An atom
2. A speck of dust
3. A molecule
4. A water drop
Answer
17491

Question 3 :

Formation of a compound is

1. Temporary change
2. Physical change
3. Reversible change
4. Chemical change
Answer
17492

Question 4 :

Which of the following is a reversible change?

1. Changing of milk into curd
2. Germination of seed
3. Burning of matchstick
4. Melting of ice
Answer
17493

Question 5 :

Chemical changes are

1. Mostly reversible
2. Mostly irreversible
3. Always reversible
4. Always are irreversible
Answer
17494