Question

How do we identify that co2,H₂, No2 gases​

Answer 1

Answer:

Characteristic test for the following Gases :

Characteristic test for the following Gases :1. CO2 gas :

Characteristic test for the following Gases :1. CO2 gas :If CO2 gas is passed to lime water [Conc. Calcium hydroxide solution], it turns milky white.

Characteristic test for the following Gases :1. CO2 gas :If CO2 gas is passed to lime water [Conc. Calcium hydroxide solution], it turns milky white.                           [OR]

Characteristic test for the following Gases :1. CO2 gas :If CO2 gas is passed to lime water [Conc. Calcium hydroxide solution], it turns milky white.                           [OR]As CO2 gas is a best fire extinguisher so, if we bring a burning match stick near the CO2 gas it turns off the burning match stick.

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Answer 2

Answer:

CO2 - colourless and odourless gas which turns lime water milky and has no effect on K2Cr2O7 and KMnO4.

H2 - colourless and odourless gas which extinguishes the burning splinter with pop sound.

NO2 - odourless reddish brown gas