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Give the characteristics test for 1.Co2 …

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Give the characteristics test for 1.Co2 2.No2 3.So2 4.so3

Posted by Baishna Ballabi Mishra 4 years, 2 months ago

CBSE > Class 10 > Science

1 answers

Sia ? 4 years, 2 months ago

CO₂ gas : If CO₂ gas is passed to lime water [Conc. Calcium hydroxide solution], it turns milky white.
The gas is brown in colour. It has a pungent smell. It changes blue litmus paper to red.
Sulphur dioxide is a odorless and pungent gas. Sulphur dioxide gas turns acidified potassium dichromate solution from orange to green colour.
Sulphur trioxide is often formed when sulphur dioxide is oxidised. This chemical compound can occur in different forms more widely in a white crystalline solid.

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