Combustion & Flame

Combustion and flame Worksheet-4

Multiple Choice Questions:

Yellow colour in the flame denotes ______.

A. Zone of complete combustion, luminous

B. Zone of incomplete combustion, luminous

C. Unburnt wax vapours

D. None of these

Combustion and flame Worksheet-5

Multiple Choice Questions:

31. The products obtained on complete combustion are _____.

A. Carbon                                       B. CO

C. CO₂                                             D. None of these

Combustion and flame Worksheet-6

1. An important liquid fuel, used in home is _____.

2. What are the main constituents of biogas and kitchen gas (L.P.G.)?

3. Fuel must be heated to its ____ temperature before it starts burning.

4. Name the gaseous fuels.

5. Make a labelled diagram of a candle flame

6. What name is given to the substances 'which can burn easily?