Chemistry Fill in the blanks Set 10

Chemistry Fill in the blanks Set 10

1. White phosphorus undergoes _________ combustion.
Ans: Oxygen
 
2. Solid carbon dioxide is used to put off ________ fire.
Ans: Electric
 
3.The luminous part of the candle flame is _________ colour.
Ans: Yellow
 
4. Thermal power stations depend heavily on ________ for generating electricity.
Ans: fuels
 
5. The hottest region of the candle flame is ______ region.
Ans: Blue
 
6. The main constituents of fuels are ___________
Ans: hydrocarbons
 
7. The ______ the heat energy evolved, the better is the fuel.
Ans: higher
 
8. Paraffin is a _________ fuel
Ans: Solid
 
9. ________ is an oily mixture of hydrocarbons in its crude form.
Ans: Petroleum
 
10. Natural gas is obtained from _______
Ans: Petroleum wells