AIPMT 2003 | Chemical Bonding and Molecular Structure Question 101 | Chemistry

AIPMT 2003

MCQ (Single Correct Answer)

-1

Which one of the following statements is not correct for sigma- and pi- bonds formed between two carbon atoms?

sigma-bond is stronger than a pi-bond.

Bond energies of sigma- and pi-bonds are of the order of 264 kJ/mol and 347 kJ/mol, respectively

Free rotation of atoms about a sigma-bond is allowed but not in case of a pi-bond.

Sigma-bond determines the direction between carbon atoms but a pi-bond has no primary effect in this regard.

AIPMT 2002

MCQ (Single Correct Answer)

-1

Which of the following has p$$\pi $$ $$-$$ d$$\pi $$ bonding?

NO₃^$$-$$

SO₃^2$$-$$

BO₃^3$$-$$

CO₃^2$$-$$

AIPMT 2002

MCQ (Single Correct Answer)

-1

In NO₃^$$-$$ ion number of bond pair and lone pair of electrons on nitrogen atom are

2, 2

3, 1

1, 3

4, 0

AIPMT 2002

MCQ (Single Correct Answer)

-1

Which of the following is isoelectronic?

CO₂, NO₂

NO₂^$$-$$, CO₂

CN^$$-$$, CO

SO₂, CO₂

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