16.  Commonly sodium is kept under the- Kerosene oil

Answer & Explanation
 

17.  White Phosphorous is place under the

Answer & Explanation
Cold water

18.  Chloroform can be used as - Anaesthtic

Answer & Explanation
 

19.  Who was the first to explain hydrogen spectrum?

Answer & Explanation
Neils Bohr

20.  Caustic Soda is -

Answer & Explanation
Deliquescent

21.  Carbon dioxide is a -

Answer & Explanation
dehydrated agent

22.  What happen when a drop of Glycerol is added to KMno4 spread on paper?

Answer & Explanation
The paper ignites

23.  Sour taste of coca cola is due to -

Answer & Explanation
Phosphoric acid

24.  Chemically 'Philosopher wood' is a-

Answer & Explanation
Zinc oxide (zno)

25.  Helium gas is filled in the balloon instead of Hydrogen because its-

Answer & Explanation
Non-Combustible

26.  Why Helium gas used in balloons?

Answer & Explanation
Its Lighter than air

27.  Most commonly bleaching agent is -

Answer & Explanation
Chlorine

28.  Chemical Name of common salt is-

Answer & Explanation
Sodium chloride

29.  Mortar is a mixture of water, sand -

Answer & Explanation
Slaked Lime

30.  What is asbestos?

Answer & Explanation
Magnesium silicate