MCQ
The number of sigma and pi bonds in $1-$butene$-3-$yne are
- A$5$ sigma and $5$ pi
- ✓$7$ sigma and $3$ pi
- C$8$ sigma and $2$ pi
- D$6$ sigma and $4$ pi
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Assertion $A :$- Carbon forms two important oxides $- CO$ and $CO _2 . CO$ is neutral whereas $CO _2$ is acidic in nature.
Reason $R :$- $CO _2$ can combine with water in a limited way to form carbonic acid, while $CO$ is sparingly soluble in water.
In the light of the above statements, choose the most appropriate answer from the options given below :-
|
Gases
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$\ce{H_2}$
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$\ce{He}$
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$\ce{O_2}$
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$\ce{n_2}$
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Critical temperature in Kelvin
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$33.2$ | $5.3$ | $154.3$ | $126$ |