The burning of camphor is an example of:
Important Questions on Changes around Us
What happens when the following objects are heated?
| a. Candle | |
| b. Rice in cooker | |
| c. Water |
A + B → C
Which of the following are correct?
i. C has a fixed composition
ii. A and B are elements
iii. A and B are compounds
iv. C is a compound.
Which of the following are chemical changes?
(a) Growth of a plant
(b) Rusting of iron
(c) Mixing of iron filings and sand
(d) Cooking of food
(e) Digestion of food
(f) Freezing of water
(g) Burning of a candle.
Which of the following are chemical changes?
i. Sawing of wood ii. Burning of wood iii. Decaying of wood iv. Hammering of a nail into a piece of wood.
Ranbir was on his way to Manu's birthday. He was meeting Manu after many years. On his way, the petrol in his vehicle was used up. He filled petrol and reached Manu's house. Ranbir could see that Manu had grown taller. He was standing in front of a cake lit with a set of candles. He wished Manu, ate a piece of cake and then returned home.
Burning of candles on the cake is an example of chemical change.
What is your observation in the following case:
Heating of lead nitrate.
Which of the following is not physical change?
In what way does a candle change during burning?
