Question

Tick (7) the correct answer:
1.
Properties which are affected during physical change :
(a) Colour
(b) Shape
1 )
(c) Size
(d) All of these
Which of the following is not an example of crystallization?
(a) Salt obtained from sea water
(b) Snow flakes formation
2.
(c) Crystallization of sugar from sugar syrup
(d) Rusting of iron
3. Example of chemical change is :
(a) Dissolving sugar in water
(b) Formation of clouds
(c) Cooking of food
(d) Cutting of trees
Which of the following can accompany a chemical change?
(a) Heat
(b) Sound
(c) Gas
Which of the following is an alloy?
(a) Copper
(b) Steel
(c) Zinc
Td) All of these
5.
(d) Aluminium​

Answer 1

Answer:

1)d , 2)d , 3)d, 4)c , 5)d

Answer 2

1. all of these

2. Rusting of iron

3. cooking of food

4. gas

5. steel