Question # 1

In methanol, bond between carbon and oxygen.

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Ionic

Non polar

Polar

Co - ordinate

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

Which of the following has linear structure.

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CO2

NH3

CH4

H2O

Ionic compound do nto show the phenomenon of Isomerism because bond are.

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Directional and rigid

Non directional and rigid

Non directional and non rigid

All above

In which one of the following pairs do the molecule have similar shape.

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BF3 and AlCl3

CO2 and H2O

CH4 and PH3

NH3 and BCl3

Which of the following has highest percentage ionic character.

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HCl

HF

HBr

HI

Fluorine molecule (F₂) is formed by the overlap of

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s - s orbital

s - p orbital

p - p head on overlapping of orbitals

p - p parallel overlapping of orbitals

VSEPR theory was proposed by

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Nyholn and Gillespie

Kossel

Lewis

Sidwick

Which of the following has bond angle of 120 ^o

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BeCl2

BF3

CH4

NH3

Which element has highest ionization potential

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Li

Na

K

Rb

Percentage ionic character of HF is.

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100%

80%

43%

57%

The paramagnetic behaviour of oxygen is well explaned on the basis of.

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M.O Theory

N.B Theory

VSEPR Theory

CF theory

Which molecule has sG2 hybridization.

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CH4

C2H4

C2H2

C2H5

Which of the following is a polar molecule

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CCl4

HCl

BF3

CO2

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

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HF

HCl

H2O

H2

Which statement is true about Na and Na+

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size of Na is greater than Na+

Size of Na is smaller than Na+

Both have equal size

Both have same properties

According to MOT, which molecular orbital has highest energy.

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sigma 1s

pi+ 2S

pi 2py

Pi+ 2px

In a group of periodic table, ionization energy.

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Decreases

Increases

Remains same

First increases than increases

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