Give reasons- Platinum, gold and silver are used to make jewellery.

Platinum, gold and silver are used to make jewellery because they are highly malleable and ductile as well as lustrous. Also, they are less reactive and do not corrode easily.

E M B I B E

SCIENCE TEXTBOOK FOR CLASS X>Chapter 3 - Metals and Non-metals>EXERCISES>Q 13

MEDIUM

10th Mizoram Board

IMPORTANT

Earn 100

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.

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 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)?