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CBSE - Class 11 Chemistry Chemical Bonding and Molecular Structure Worksheet

Which is not Retentate?

Proteins

Polysaccharides

Phosphates

Lipids

Which hybrid orbitals are used by carbon atoms in the following molecules? (d) $CH_3-CHO$

Although both $CO_2$ and $H_2O$ are triatomic molecules, the shape of $H_2O$ molecule is bent while that of $CO_2$ is linear. Explain this on the basis of dipole moment.

What is the shape of SF4?

Trigonal bipyramidal

See-saw

Tetrahedral

Square planar

Which one of the following has longest covalent bond distance

a)C ---C

b)C----H

c)C----N

d)C----O

The type of hybridization in XeO₃ is

sp²

sp³

sp³d²

sp³d

Use Lewis symbols to show electron transfer between the following atoms to form cations and anions : (c) Al and N.

Considering x-axis as the internuclear axis which out of the following will not form a sigma bond and why? (a) $1s$ and $1s$ (b) $1s$ and $2p_x$; (c) $2p_y$ and $2p_y$ (d) $1s$ and $2s$.

Inorganic compounds are componds that lack

carbon-oxygen bond

carbon-hydrogen bond

oxygen-hydrogen bond

nitrogen-hydrogen bond

10.

Which hybrid orbitals are used by carbon atoms in the following molecules? (a) $CH_3–CH_3$

11.

Apart from tetrahedral geometry, another possible geometry for $CH_4$ is square planar with the four H atoms at the corners of the square and the C atom at its centre. Explain why $CH_4$ is not square planar ?

12.

What is the shape of XeF₄

Octahederal

Square planar

Bent

see-saw

13.

Write the significance of a plus and a minus sign shown in representing the orbitals.

14.

The mass of carbon anode consumed giving only carbon dioxide in the production of 270 kg of aluminium metal from bauxite by the Hal process is (at at. Mass of Al = 27)

180 kg

270 kg

540 kg

90 kg

15.

Arrange the bonds in order of increasing ionic character in the molecules: $LiF$, $K_2O$, $N_2$, $SO_2$ and $ClF_3$.

16.

Distinguish between a sigma and a pi bond.

17.

The skeletal structure of $CH_3COOH$ as shown below is correct, but some of the bonds are shown incorrectly. Write the correct Lewis structure for acetic acid.

18.

Explain the important aspects of resonance with reference to the $CO_3^{2-}$ ion.

19.

Define the bond length.

20.

Is there any change in the hybridisation of B and N atoms as a result of the following reaction?

Worksheet Answers

Option C

Option B

12.

Option B

Solution:

BP=4, LP=2, Square planar

14.

Option A

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