Text Solution
Verified by Experts
|
NCERT-METALS AND NON-METALS-Exercise
- What chemical process is used for obtaining a metal from its oxide?
01:00
|
- Metallic oxides of zinc, magnesium and copper were heated with the fol...
05:40
|
- Which metals do not corrode easily?
01:39
|
- What are alloys?
01:30
|
- Which of the following pairs will give displacement reactions? (i) Na...
03:00
|
- Which of the following methods is suitable for preventing an iron fryi...
03:39
|
- An element reacts with oxygen to give a compound with a high melting p...
01:25
|
- Food cans are coated with tin and not with zinc because (a) zinc is ...
01:15
|
- You are given a hammer, a battery, a bulb, wires and a switch. (a) H...
02:55
|
- What are amphoteric oxides? Give two examples of amphoteric oxides.
02:55
|
- Name two metals which will displace hydrogen from dilute acids, and tw...
01:45
|
- In the electrolytic refining of a metal M, what would you take as the ...
02:40
|
- Pratyush took sulphur powder on a spatula and heated it. He collected ...
02:59
|
- State two ways to prevent the rusting of iron.
02:27
|
- What type of oxides is formed when non-metals combine with oxygen?
01:17
|
- Give reasons (a) Platinum, gold and silver are used to make jeweller...
04:47
|
- You must have seen tarnished copper vessels being cleaned with lemon o...
02:47
|
- Differentiate between metal and non-metal on the basis of their chemic...
02:21
|
- A man went door to door posing as a goldsmith. He promised to bring ba...
03:16
|
- Give reasons why copper is used to make hot water tanks and not steel ...
02:14
|