Poly halogen compounds have a lot of applications and at the same time have harmful effects. False statement about them among the following is

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${CHI}_{3} has objectionable smell$

${CH}_{2} {Cl}_{2} burns cornea on direct contact to eyes$

${CCl}_{2} F_{2} is highly reactive$

${CCl}_{4} can be used as fire extinguisher$

answer is D.

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Detailed Solution

The chlorofluorocarbon compounds of methane and ethane are collectively
known as freons.
They are extremely stable, unreactive, non-toxic, noncorrosive and easily liquefiable gases.
Freon 12 (CCl₂F₂) is one of the most common freons in industrial use.

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