Table of Contents
MCQs ON CHEMISTRY
1. Bleaching action of chlorine is by:
A.decomposition
B.hydrolysis
C.reduction
D.oxidation
2. Which metal is heaviest ?
A.osmium
B.mercury
C.iron
D.nickle
3. What is a mixture of potassium nitrate powdered charcoal and sulphur called?
A.paint
B.aluminium
C.brass
D.gun powder
4. Nail polish remover contains ?
A.benzene
B.acetic acid
C.acetone
D.petroleum ether
5. What nucleus of atom contains ?
A.protons
B.electrons
C.electrons and protons
D.protons and neutrons
6. The isotope atoms differ in ?
A.number of neutrons
B.atomic number
C.number of electrons
D.atomic weight
7. Human bone does not contain:
A.calcium
B.carbon
C.oxygen
D.phosphorous
8. Homo nuclear molecules contain ?
A.polar bond
B.covalent bond
C.ionic bond
D.coordinate bond
9. Air contains maximum amount of:
A.oxygen
B.nitrogen
C.hydrogen
D.carbon dioxide
10. Washing soda is ?
A. sodium sulphite
B. sodium bicarbonate
C. sodiun carbonate
D. sodium biosulphite
ANSWERS:
1.A
2.A
3.D
4.C
5.D
6.A
7.C
8.B
9.B
10.C
DOWNLOAD MOBILE APPLICATION TO LEARN MORE: MCQs ON CHEMISTRY
ALSO VISIT:MCQs ON DIGESTIVE SYSTEM