Carbon, in all its allotropic forms, burns in oxygen to give carbon dioxide along with the release of heat and light. Most carbon compounds also release a large amount of heat and light on burning. Saturated hydrocarbons will generally give a clean flame while unsaturated carbon compounds will give a yellow flame with lots of black smoke. This results in a sooty deposit on the metal plate
1. Carbon burns into oxygen to give ______.
(i) Carbon dioxide
(ii) Carbon monodioxide
2. Saturated hydrocarbons have ______ flame
(i) Clean
(ii) Yellow
3. Unsaturated hydrocarbons have ______ flame
(i) Clean
(ii) Yellow
4. Carbon compounds are released in large amounts during ______.
(i) Burning
(ii) Heating
(iii) Both A and B
5. Unsaturated hydrocarbons have ______ flame but gives out lot of _______.
(i) Yellow, black smoke
(ii) Clean, no smoke
