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Question

Identify the correct statements from the following:
(a) Solid CO is known as dry ice.
(b) The structure of C60 contains twenty six carbon rings and twelve five carbon rings.
(c) Hydrated zeolites are used as an ion exchanger in softening of hard water.
(d) CO2 is a colorless and odourless gas.

A
(a) and (c) only
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B
(b) and (c) only
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C
(c) and (d) only
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D
(b), (c) and (d) only
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Solution

The correct option is D (b), (c) and (d) only
CO2 is a colourless and odourless gas. Carbon dioxide can be obtained as a solid in the form of dry ice by allowing the liquefied CO2 to expand rapidly.

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