TNPSC Group II Materials

CHEMISTRY QUESTIONS AND ANSWERS

1. First atomic theory was proposed by
John Dalton  
2. The alloy of aluminium used for making magnet is
alnico
 3. Which one of the following is an element?
diamond  
4. Nucleus of an atom contains
protons and neutrons
 5. Rare gases are
di atomic 

6. Which synthetic fibre is known as artificial silk? 

Rayon 
 7. Bleaching powder contains
chlorine 
 8. DDT is an
insecticide  
9. Water drops are spherical because of
surface tension 
 10. Which one of the following is also called Stranger Gas?
Xenon 

 11. For which one of the following is the density maximum? 

 Water  
12. Nail polish remover contains
acetone  
13. The element used in lead pencils is
carbon 
 14. Aluminium oxide is a/an
amphoteric acid 
 15. Epsom salt is chemically known as
magnesium sulphate