1. Photosynthesis is an example for
2. Formula for Propane is
3. The brown coloured gas evolved on heating of Lead Nitrate is ______
4. Ca CO₃ → CaO + CO₂ is an example for
5. The reaction in which a black coat forms on silver articles is
6. CuO + H₂ → Cu + H₂O. This is an example for
7. Firing of crackers is an example of _______
8. Atomic number of Carbon is
9. Which element is non - corrosive?
10. The substances which undergo chemical change are called
11. 1 gram molar volume of any gas contains _________ no of molecules
12. The chemical reaction involved in addition of yeast to wet paste of rice is
13. The process of coating iron articles with Zinc is
14. _____ is added to oils to prevent Oxydation
15. Stainless steel is an alloy of
16. N₂ + O₂ → 2NO. This is an example for ________ reaction
17. _____ vitamin is added to preserve food
18. The substance responsible for green coat on articles made of Copper is
19. The gas used to preserve chips in packets is
20. Identify a temporary change
