EASY
10th Mizoram Board
IMPORTANT
Earn 100

Give reasons-
Carbonate and sulphide ores are usually converted into oxides during the process of extraction.

Important Questions on Metals and Non-metals

MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 3 - Metals and Non-metals>EXERCISES>Q 13
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 3 - Metals and Non-metals>EXERCISES>Q 14
Differentiate between metal and non-metal based on their chemical properties.
EASY
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 3 - Metals and Non-metals>EXERCISES>Q 15
A man went door to door posing as a goldsmith. He promised to bring back the glitter of old and dull gold ornaments. An unsuspecting lady gave a set of gold bangles to him which he dipped in a solution. The bangles sparkled like new, but their weight was reduced drastically. The lady was upset but after a futile argument the man beat a hasty retreat. Can you play the detective to find out the nature of the solution he had used?
MEDIUM
10th Mizoram Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS X>Chapter 3 - Metals and Non-metals>EXERCISES>Q 16

Give reasons-

Why copper is used to make hot water tanks and not steel (an alloy of iron)?