Question # 1

The bond order for BO molecule is.

Choose an answer

2.5

3.0

2.0

3.5

Which among the following elements has the highest value of IE.

Choose an answer

Mg

Na

Ca

Sr

Which of the following ions does not have the electronic configuration same as that of neon.

Choose an answer

F-

O2-

Na+

Ca2+

Which of the following statements regarding covalent bond is false.

Choose an answer

The electrons are shared between atoms.

The bond in non -directional

The strength of the bond depend upon the extent of overlapping

The bond formed may be polar or non-polar

When two atoms of hydrogen combine to form a molecule of hydrogen gas the energy of the molecule.

Choose an answer

higher than that of the separate atoms

Equal to that of the separate atoms

Lower than that of the separate atoms

Sometimes lower and sometime higher.

The concept is also known as electron pair donor acceptor system.

Choose an answer

Bronsted Lowery

Lewis

Lux -Flood

Usanovich

The electronic configuration of some elements are given below. The element with highest electron affinity is

Choose an answer

1s2, 2s2, 2p3

1s2, 2s2, 2p4

1s2, 2s2, 2p5

1s2, 2s2, 2p6

Iodine is a grey black solid and its vapours are in color

Choose an answer

Grey

Black

Yellow

Violet

Which one of the following sets of elements has the strongest tendency to form positive ions in gaseous state.

Choose an answer

Li, Na, K

F, Cl, Br

Be, Mg, Ca

O, S , Se

AlCl3 fumes in air because of.

Choose an answer

Hydrolysis

Dehydration

Hydration

Oxidation

Dibornae is used

Choose an answer

Fro high energy fuel

For welding torches

as reducing agent

All above

Pick out the incorrect statement regarding ozone.

Choose an answer

O3 is an unstbale dark blue diamagnetic gas

The central oxygen in O3 is sp3 hybridized

It cause the tailing of mercury

It does not react with KOH

Which element amongst the following has the highest boiling point.

Choose an answer

Na

Mg

Ca

K

Variable electrovalency is due to the following reasons.

Choose an answer

Unstable configuration of core

Inset electron pair effect

All of above

None of above

Elements in the same vertical group of the periodical have same

Choose an answer

Number of electron

Atomic number

Number of valence elections

Electronic configuration

The first noble gas compound was

Choose an answer

XeO3

XeF4

XeF6

Xe +[PtF6]

Anything that influence the valence electrons will affect the chemistry of the element Which of the following factors does not affect the valency shell.

Choose an answer

Valence principle quantum number in

Nuclear charge (Z)

Nuclear mass

Number of core electrons

Oxalic acid when heated withe conc. H2SO4 it gives out.

Choose an answer

H2O and CO2

CO and CO2

CO2 and H2S

Oxalic sulphate

Sodium react more vigorously than lithium because.

Choose an answer

It is a metal

It has higher atomic mass

It is more electronegative

It is more electropositive

Metal crystallize is system having co ordination number

Choose an answer

8

12

14

any one of above

Which of the following will exhibit variable electro Valency due to intert pair effect.

Choose an answer

Fe

Sn

K

Both Fe and Sn

More Classes

Other Links

PPSC Chemistry Part III Inorganic Chemistry Online Test MCQs With Answers

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer

Choose an answer