Question # 1

Arrange the hydrides of group 15 in the correct order of reducing nature.

Choose an answer

NH3 < PH3 < AsH3 < Sb H3 < BiH3

NH3 > PH3 >AsH3 >Sb H3 > BiH3

PH3 < AsH3 < SbH3 < BiH3 < NH3

PH3 > AsH3 > SbH3 > BiH3 > NH3

The total number of bond pairs around sulphur and total number of lone pairs around oxygen atoms in the Lewis structure of sulphate ion are respectively.

Choose an answer

4, 12

8,12

12,4

6 ,12

Which of the following radical is not a member of II group.

Choose an answer

Cu²⁺

Cd²⁺

Ba³⁺

K+

The increase in boiling points of noble gases from He to Xe is due to the

Choose an answer

Decreases in ionization energy

Increases in polarizability

Increase in electron affinity

Increase in atomic volume

Aluminum occurs in nature as.

Choose an answer

Native

Combined form

Both native and combined

Free

The specific gravity of H2SO4 is

Choose an answer

1.37

1.84

1.17

1.57

Which process of adsorption of hydrogen on palladium is known as.

Choose an answer

Syneresis

Occlusion

Diffusion

Erosion

iodine is used as a

Choose an answer

Photography

Manufacture of dyes

Analgesic

All above

Which of the ionic possesses highest bond energy.

Choose an answer

C-C

Si -Si

Ge - Ge

Sn -Sn

Which of the following is not obtained when Br2 is added to ethylene in the presence of aqueous NaCl solution.

Choose an answer

Br CH2CH2Br

Br CH2CH2Cl

ClCH2 CH2Cl

ClCH2CH2Cl

In whihc period, the element with least ionization enthalpy belong to

Choose an answer

Group I

Group 2

Group 17

Group 18

An example of acyclic polytropenoid is

Choose an answer

Myrcone

Buna -S

Synthetic rubber

Natural rubber

Which of the following generally increases on going from top to bottom in a group.

Choose an answer

Metallic charcter

Electronegativity

Oxidising behaviour

Raducing behaviour

What term is used to denote a family of thermosetting polymers that are reaction products of alcohols and acids.

Choose an answer

Alkaline

Alkydes

Alcocide

Ketones

Which of the following process is involved in nitrogen flotation

Choose an answer

Non symmetric fixation of nitrogen

Fixation by soil bacteria

Fixation by yeast

Fixation by blue green algae

All above

The correct order of acid strength is.

Choose an answer

HIO4 > HBrO4 > HCIO4

HCIO4> HBrO4 > HIO4

HBrO4 > HIO4 > HCIO4

HBrO4 > HCIO4 > HIO4

Which of the following is a buffer solution.

Choose an answer

CH3COOH + NH4OH

CH3 COOH + HCl

CH3COOH + NaOH

CH3COOH + CH3COONa

The process requirieng the absorption of energy of.

Choose an answer

F = F

Cl = Cl

H = H

O = O

Which of the following equations is the most general equation of state.

Choose an answer

Vander Waal's equation

Dielectric equation

Clasuaiua equation

Kamberling Onnes equation

The formula of Tetraboric acid is.

Choose an answer

H2BO3

HBO2

H2B4O7

H6B4O9

in the system of designating wrought aluminum alloys the letter F that follows the number indicates what condition of the alloy.

Choose an answer

As fabricated

Calcined

Annealed

Strain hardened

If Steel is heated to a temperature well below red heat and to then cooled slowly the process is called.

Choose an answer

Annealing

Quenching

Tempering

Nitriding

If the values of standrd deviations for the first and second method differ, then which of the following test helps one to know whether this difference is significant.

Choose an answer

Student's test

F-Test

Chi square test

Standard deviation

Permanent hardness of water is due to.

Choose an answer

Sulphate of Ca

Chloride of Ca

Sulphate of Mg

All above

The normality of 2.3 M H2SO4 solution is.

Choose an answer

0.46 N

0.23 N

2.3 N

4.6 N

Branch of chemistry that deals with the basic principles governing energy changes during various processes is called.

Choose an answer

Wave mechanics

Chemical kinetics

Chemical thermodynamics

Electro chemistry

How many stereoisomers are possible for CH3CH = CHCHCH(Br) CH3

Choose an answer

2- geometrical isomers

2- optical isomers

2- geometricla nad 2- optical isomers

2- geometrical and 1 optical isomers

Final paper wound in the form of a real having final moisture of about.

Choose an answer

6-8%

9 - 12 %

13-15 %

4 - 10%

Which of the following configuration of an ionic species represents psedue noble gas configuration.

Choose an answer

ns2

ns2 np6

ns2 np6 nd 10

ns2 np3

Strongest inter molecular hydrogen bond is formed in

Choose an answer

H2O

NH3

HF

H2S

Which of the following compound does not following octet rule.

Choose an answer

CS2

PBr3

IBr

Br F3

More Classes

Other Links

PPSC Chemistry Full Book 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

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