MEDIUM
8th CBSE
IMPORTANT
Earn 100

Zinc sulphate forms a colourless solution in water. Will you observe any colour on adding copper turning in it?

Important Questions on Materials Metals and Non-Metals

EASY
8th CBSE
IMPORTANT
Which liquid metal is used for making thermometers?
MEDIUM
8th CBSE
IMPORTANT

Which of the following metal can displace the other two metals from their salt solutions?

Zinc, Iron, Copper

EASY
8th CBSE
IMPORTANT
Paheli bought a statue made of copper. To her surprise it acquired a dull green coating after a couple of months. Explain the reason.
MEDIUM
8th CBSE
IMPORTANT

In the given figure, you find that the bulb glows when an iron nail is placed between two ends of the wire.

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Complete the following sentence on the basis of this fact. 

From the given figure_____ is a metal.

 

EASY
8th CBSE
IMPORTANT

In Fig 4.1 you find that the bulb glows when an iron nail is placed between two ends of wire. Complete the following sentences on the bases of this fact.

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               Fig 4.1

Metals are good _____ of electricity.

EASY
8th CBSE
IMPORTANT

If in Fig. iron nail is replaced by a wooden stick, will the bulb glow or not? Justify your answer.

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MEDIUM
8th CBSE
IMPORTANT

Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojho prepared a yellowish green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?