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10th CBSE
IMPORTANT
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An iron nail is dipped in copper sulphate solution. It is observed that:

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Important Questions on Metals and Non - Metals

HARD
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 28
SO2: 
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 29

Metal A when dipped in solution of salt of metal B, then metal B is displaced. This shows that:

HARD
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 30
When iron nail is dipped in aqueous solution of copper sulphate, it is observed that: 
MEDIUM
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 31
Which of the following metals will not react with oxygen, even when heated very strongly in air?
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10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 32
Electro-metallurgical process is employed to extract?
HARD
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 33
Which of the following element occurs free in nature?
HARD
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 34
What is not true about calcination?
HARD
10th CBSE
IMPORTANT
SCIENCE CHEMISTRY Part-II>Chapter 3 - Metals and Non - Metals>Summative Assessment>Q 35
What is not true about roasting?