EASY
10th CBSE
IMPORTANT
Earn 100

A metal M does not liberate hydrogen from acids but reacts with oxygen to give a black colored product. Identify M and the black colored product and also explain the reaction of M with oxygen.

Important Questions on Metals And Non-Metals

EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 11
Explain, why zinc metal can displace copper from copper sulphate solution but copper cannot displace zinc from zinc sulphate solution?
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 12
State the reason for the following behaviour of zinc metal:
On placing a piece of zinc metal in a solution of mercuric chloride it acquires a shining silvery surface but when it is placed in a solution of magnesium sulphate no change is observed.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 1
Give reasons for the following: Zinc oxide is considered an amphoteric oxide.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 1
Give reasons for the following: Non-metals in general do not displace hydrogen from dilute acids.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 1
Give reasons for the following: Metals conduct electricity
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
Give reasons for the following: Na, K and Ca metals form hydrides by combination with hydrogen gas, but most other metals do not.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
Give reasons for the following: Aluminium easily combines with oxygen but still it can be used for making kitchen utensils.
EASY
10th CBSE
IMPORTANT
Core Science Chemistry>Chapter 3 - Metals And Non-Metals>EXERCISE 3C>Q 2
Give reasons for the following: Zinc oxide is called an amphoteric oxide.