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