Question # 1

Which of the following is an allotrops of hydrogen.

Choose an answer

0- H2

P-H2

Both A and B

None of these

The IUPAC name of C2(CN)3 is

Choose an answer

2,3-dicvano butanedinitrile

2,3 -dicyano -2- butenedinitrile

1,1,2,2-tetrcyanoethane

1,1,2,2, tetracyanocthenc

Enantiomers have which of the following characteristics.

Choose an answer

Rotate ordinary light

Have the same melting point

Are superimposable mirror images

React with optically active molecule at the same rate

Which of the following method is based on the solubility difference between the analyte and the unwanted components.

Choose an answer

Distillation

Complex formation

Electrodepostion

Precipitation

In which property listed below hydrogen does not resemble alkali metals.

Choose an answer

Tendency to form cation

Nature of oxide

Combination with halogens

Reducing character.

Which of the following radical is not a member of III group

Choose an answer

Al³⁺

Fe²⁺

Ca²⁺

Fe³⁺

What type of steel has 0.8 % carbon and 100% pearlite.

Choose an answer

Austenite

Eutectoid

Hyper eutectoid

Silver steel

Finely divided iorn combines with CO to give

Choose an answer

Fe(CO)3

Fe2 (CO)9

F33(CO)12

Fe(CO)6

When 0.01 moles of NaOH are added to a buffer solution, its pH changes from 4.745 to 4.832 WHAT IS ITS.

Choose an answer

0.115

0.900

0.015

0.215

When calcium is heated in the flame of a Bunsen burner, the colour imparted to the flame is.

Choose an answer

Golden yellow

Brick red

Crimson red

Grassy green

Indicate false statement about stainless steel

Choose an answer

The density of stainless steel is about the same as carbon or low alloy steels

Stainless steels are poor conductors of heat

Stainless steels are poor conductors of electricity

Stainless steels have tensile moduli greater than those of carbon and alloy steels.

According to CFT the metal ligand bond is considered to be ionic to presentage.

Choose an answer

100%

90%

50%

70%

BCl3 is an example of hybridization

Choose an answer

sp

sp2

sp3

None of above

The element having electronic configuration 1s2, 2s2, 3s2, 3p3 is.

Choose an answer

Trivalent only

Tetravalent only

Trivalent and pentavalent

Pentavalent only

An Ideal gas is one which obeys all the gas law at.

Choose an answer

Low pressure

High Pressure

Low and High temperature

All condition of pressure and temperate re

Which of the following is not a physical test.

Choose an answer

Colour test

Flame test

Beed test

Wet test

In the metallurgy of iron, when limestone is added to the blast furnaced, the calcium ion ends up in

Choose an answer

Slag

Gangue

Metallic calcium

Calcium carbonate

Which of the following linear polymer.

Choose an answer

Polypeptide

Protein

Starch

Phenol formaldehyde resin

Which of the following species is determined by complex metric titrations.

Choose an answer

K+

Na+

Ca+

Cl-

Stainless steel consists of which elements.

Choose an answer

Fe only

Cr only

Fe and Ni

Fe ,Ni and Cr

An acid base titration involves a neutralization reaction in which an acid is reacted with an equivalent amount of base The titrant is always a strong acid or base The analyte may be

Choose an answer

Strong acid

Strong base

Weak acid and Weak base

All above

Detergents are known to pollute revers and water ways. However, detergents can be made biodegradable and pollution free by taking.

Choose an answer

cyclic hydrocarbon chain

Shorter hydrocarbon chain

Unbranched hydrocarbon chain

Benzenoid hydrocarbons

Thermocouples have been constructed from

Choose an answer

Chromel ve elumel

Copper vs platinum

Both

None

In which of the following techniques the solvated molecules are separated according to their size by their ability to penetrate a sieve like structure.

Choose an answer

Adsorption chromatography

Partition chromatography

Ion exchange chromatography

Gel permeation chromatography

If for a solution of an electrolyte. It is the transport number of the cation, then the transport number of the anion I, is equal to

Choose an answer

t/2

1 - t+

1 + t+

(i -t) /2

Which of the following process is used for the removal of gases.

Choose an answer

Precipitation

Chemical reaction in the atmosphere

Absorption

All above

Pi bond is formed

Choose an answer

By the overlapping of atomic orbitals on internuclear axis

By transference of electrons

By sidewise overlapping to half filled p orbitals

By overlapping of s-orbitals with p orbitals

Which of the following analytical method is based on the rotation of light ratiation

Choose an answer

Refractomerty

Polarimetry

Interformetry

Polarography

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

A drop of a liquid acquires spherical shape because of.

Choose an answer

Its viscous nature

Capillary action

The tendency to acquire minimum surface are

Its shape

Water that easily forms a lather of films and frotha when agitated with a soap solution called.

Choose an answer

Hard water

Heavy water

Soft water

Washing water

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