When the sulphur particles begin to form a colloidal solution is formed in the glass tank due to which short wavelength of light are scattered by the minute colloidal sulphur particles.
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CORONA-19 is a respiratory disease as it mainly affects the lungs. It is transmitted from an infected person mostly by respiratory droplets released into the air when an infected person sneezes or coughs directly without covering his mouth or nose. ...
(i) it does not react with water (ii) it reacts violently with water (iii) it reacts less violently with water (iv) bubbles of hydrogen gas formed stick to the surface of calcium