The correct order regarding the electron...

The correct order regarding the electronega tivity of hybrid obritals of carbon is

`sp gt sp^(2) lt sp^(3)`

`sp gt sp^(2)gt sp^(3)`

`sp lt sp^(2)gt sp^(3)`

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The correct Answer is:

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The correct statement regarding entropy is

At absolute zero temperature, entropy of a perfectly crystalline solid is zero.

At absolute zero temperature, the entropy of a perfectly crystalline substance is +Ve.

At absolute zero temperature, the entropy of all crystalline substances is zero.

At `0^@C`, the entropy of a perfect crystalline solid is zero.

X is `CH_3-CH=C=O`

Y is

Both a and b

[4+2] cyclo addition

Graphite is not a conductor because, it does not contain free electrons

Graphite is a three dimensional conductor because, the p-electrons are delocalised three dimensionally

Graphite is a two dimensional conductor because p-electrons are delocalised two dimensionally

In graphite all the carbon atoms undergo `sp^(3)` hybridization