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Answer:
CaOCl2 is formula of Bleaching powder
Bleaching powder chemical formula contains chlorine In it so it smells like chlorine
Concave mirror forms magnified images
That is the reason It is used for shaving mirror
Bio gas is made of organic substances and burning it produces less smoke hence it is eco-friendly as no harmful gases are released
I. When exposed to air, bleaching powder reacts with carbon dioxide in air to produce calcium carbonate and chlorine.
Bleaching powder gets its property because of this release of chlorine gas and hence has the odour of chlorine.
ii. Concave mirrors are used as shaving mirrors to view a magnified image of the face.
An enlarged image of the face is seen when it is held within the focus of a concave mirror.
iii. Bio gas is an eco - friendly fuel because it helps to reduce the greenhouse gas emissions and and our dependency on fossil fuels.
It is produced from decomposition of organic matter so it is an effective way of disposal of organic waste.