MEDIUM
10th CBSE
IMPORTANT
Earn 100

Why is sodium kept under kerosene?

Important Questions on Metals and Nonmetals

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 8
Explain why sodium is not found in the native state.
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 9
State any three chemical characteristics of a nonmetal.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 10
How are metals refined by electrolytic process?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 11
Name three non-metallic oxides which are acidic. What happens when they are dissolved in water?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 12
State any four uses of aluminium.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 13

From among the following, choose metals and non-metals. State one of the properties on the basis of which you have made your choice.

(i) Graphite (ii) Sodium (iii) Sulphur (iv) Helium

HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 14
What happens when NH4OH is added to an aqueous solution of aluminium chloride?
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 15
What is rust? How is it formed?