HARD
10th CBSE
IMPORTANT
Earn 100

Draw a labelled diagram of Frasch process for mining sulphur. State the function of the following in the Frasch process: (a) Superheated water (b) Air at high pressure

Important Questions on Metals and Nonmetals

EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 2
Metals below hydrogen in the activity series can
EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 1
_____ is the most abundant metal in the earth’s crust. (Calcium/ Aluminium)
EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 2
The reactive metals do not occur in nature in the _____ state.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 3
Electromagnets are used to concentrate _____ ores. (magnetic / non-magnetic)
HARD
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 8
In the extraction of aluminium from bauxite _____ is added to lower the melting point of bauxite. (Cryolite/ lead)
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 2
All metals react with water with the same activity.
MEDIUM
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 18
Why is cryolite added to bauxite in the extraction of aluminium?
EASY
10th CBSE
IMPORTANT
Foundation Science Chemistry FOR CLASS 10>Chapter 5 - Metals and Nonmetals>EXERCISES>Q 20

In the molecular formula of sulphur molecule, Sx the value of x can be-

A. x = 4

B. x = 16

C. x = 8

"Enter your correct answer as A, B or C."