In the following compound, the number of sp-hybridised carbons are

CH₂=C=CH-CH(CN)-C≡CH

• 2

• 3

• 4

• 5

The correct order of decreasing H-C-H angle in the following molecule is

• I> II> III

• II> I> III

• III> II> I

• I> III> II

The correct order of decreasing length of the bond as indicated by the arrow in the following structures is

• I >II > III

• II > I > III

• III > II > I

• I > III > II

In SOCl₂, the Cl-S-Cl and Cl-S O bond angles are

• 130° and 115°

• 106° and 96°

• 107° and 108°

• 96° and 106°

In O₂ and H₂O₂ , the O-O bond lengths are 1.21 and 1.48 Å respectively. In ozone, the average O-O bond length is

• 1.28 Å

• 1.18 Å

• 1.44 Å

• 1.52 Å

In diborane, the number of electrons that accounts for bonding in the bridges is

• six

• two

• eight

• four

The bond angle in NF₃ (102.3$°$) is smaller than NH₄ (107.2$°$). This is because of

• large size of F compared to H

• large size of N compared to F

• opposite polarity of N in the two molecules

• small size of H compared to N

318.

The structure of XeF_6, is experimentally determined to be distorted octahedron. Its structure according to VSEPR theory is

• octahedron

• trigonal bipyramid

• pentagonal bipyramid

• tetragonal bipyramid

Addition of excess potassium iodide solution to a solution of mercuric chloride gives the halide complex

• tetrahedral K₂[HgI₄]

• trigonal K [HgI₃]

• linear Hg₂I₂

• square planar K₂[HgCl₂I₂]

Tautomerism is exhibited by

• (Me₃CCO)₃CH

• 

• 

•