Question # 1

Dipole Moment of H2O is.

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1.61 D

1.85 D

0.95 D

1.49 D

Which of the following molecules have highest bond energy

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F2

Cl2

Br2

I2

Which one of the following has the greater ionic characters in it.

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HF

HCl

H2O

H2

The carbon atom is C2H4 is.

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sp3 hybridized

sG2 hybridized

Sp hybridized

dsG2 bybridized

The H - H Bond energy in KJ mole -1 is.

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346

436

463

336

In a group of periodic table, ionization energy.

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Decreases

Increases

Remains same

First increases than increases

Which of the following has bond angle of 120 ^o

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BeCl2

BF3

CH4

NH3

The shape of Sncl2 molecule is.

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Linear

Angular

Trigonal planar

Tetrahedral

Ionic bond is formed by combination of groups

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IA and VIII

II A and VII A

IV A and VA

VIA and VII A

Which of the following molecules have unpaired electrons is the bonding molecular orbitals.

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N2

O2

B2

F2

Which of the following molecule has zero dipole moment.

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NH3

CHCl3

H2O

BF3

Which of the hydrogen halides has the highest percentage of ionic character.

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HF

HBr

HCl

HI

The tendency of an tom to attract shared pair of electron towards itself is called its.

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Ionization energy

Electronegativity

Electron affinity

dipole moment

What is bond order.

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Number of unpaired electrons

Number of paired electrons

Number of electrons present in antibonding molecular orbital

Number of bond formed between two atoms after overlap

The number of bonds in nitrogen molecules is.

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One pi and one sigma

One pi and two sigma

Thre sigma only

Two pi and one sigma

Those elements whose electronegativities are 1.2 and 3.2, react to form

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Ionic bond

Covalent bond

Gaseous substance

Definiting a liquid substance

Which of the following species has unpaired electrons in anti bonding molecular orbitals

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O2

N2

B2

F2

How many sigma and pi bonds are present in C2H2.

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one sigma and two pi

two pi and one sigma

Two pi and three sigma

Three pi and two sigma

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