MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
Earn 100

What happens when dilute sulphuric acid is poured on a copper plate? Write word equations of the reactions involved.

Important Questions on Materials : Metals and Non-Metals

MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 11 - Materials : Metals and Non-Metals>Exercises>Q 9

What happens when iron nails are placed in copper sulphate solution? Write word equations of the reaction involved.

HARD
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 11 - Materials : Metals and Non-Metals>Exercises>Q 10
Sarish took a piece of burning charcoal and collected the gas evolved in a test tube.
(a) How will she find the nature of the gas?
(b) Write down word equations of all the reactions taking place in this process.
MEDIUM
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 11 - Materials : Metals and Non-Metals>Exercises>Q 11
One day Reeta went to a jeweller’s shop with her mother. Her mother gave an old gold jewellery to the goldsmith to polish. Next day when they brought the jewellery back, they found that there was a slight loss in its weight. Can you suggest a reason for the loss in weight?
EASY
8th Jammu and Kashmir Board
IMPORTANT
SCIENCE TEXTBOOK FOR CLASS 8>Chapter 11 - Materials : Metals and Non-Metals>Exercises>Q 12
Why phosphorus is stored in water?