Question # 1

Metallic magnesium is obtained by

Choose an answer

Reduction of MgO with Coke

Electrolysis of an aqueous solution of MgCl2

Electrolysis of molten MgCl2

Displacement of magnesium by iron form MgCl2 solution.

The aluminium salt commonly used to stop bleeding is

Choose an answer

Aluminium sulphate

Potash Alum

Aluminium chloride

Aluminium fluroide

a-pinene hydrochloride on warming rearrangements to form bornyl chloride

Choose an answer

Pinacol pinacolone

hofmann

Wagner Meerwein

Wolf

Gravimetric method is based on which of the following property.

Choose an answer

Volume of a liquid

Volume of gas

Mass of substance

Viscosity

What refers to the application of any process whereby the surface of steel is altered so that it will become hard.

Choose an answer

Caburizing

Case harden zing

Ammealing

Surface hardening

The noble gas used or treatment of cancer is

Choose an answer

Helium

Argon

Radon

Krypton

What typical penetrator is used in Brinell hardness test

Choose an answer

10 mm ball

1.6 mm diameter ball

20^o needle

None of these

Acute toxicity is expressed by the term

Choose an answer

LD50

IC50

I 1/2

Mean life

What refer to the casehardening process by which the carbon content of the steel ear the surface of a part is increased?

Choose an answer

Carburizing

Annealing

Normalizing

None of these

The hydrogen bond is strongest in.

Choose an answer

O - H .............S

S - H.............O

F- H....................F

F - H...............O

Which one of the following statements if false with respect to CFT.

Choose an answer

In an octahederal crystal field. the d electron on a metal ion occupy the ex of orbitals before they occupy the t98 not of orbitals.

Diamagnetic metal ions cannot have an odd number of electrons

Low spin complexes can be paramagnetic

Low spin complexes contain strong field ligands.

Thermocouples have been constructed from

Choose an answer

Chromel ve elumel

Copper vs platinum

Both

None

Which of the following solution would exhibit abnormal colligative proportions.

Choose an answer

0.1 M NaCl

0.1 M urea

0.1 M sucrose

0.1 M glucose

Which of the following is not an ore of nickel.

Choose an answer

Pentalandite

Siderite

Garnierite

Nicollite

The sum of pH and pOH is aqueous solution is equal to.

Choose an answer

14

7

zero

pKw

Particulate from soil and mineral primarily contains

Choose an answer

Sodium compounds

Calcium compounds

Silicon compounds

Calcium, aluminum and silicon compounds

in monel metal copper is alloyed wiht which metal.

Choose an answer

Fe

Mn

Ni

All

The process in which ore is heated generally in the absence of air, to expel water from a hydrated oxide at temperature below their melting points is called.

Choose an answer

calcination

Roasting

Froth floatation

Bessemerization

Enfleurage process is ued to extract the essential oils from

Choose an answer

Bark of plant

Seeds of plant

Leaves of plant

Flowers of plant

What ASTM test for tension is designated for plastics.

Choose an answer

A 370

D 638

E 292

None of these

Group VA of the periodic table consist of elements.

Choose an answer

3

4

5

6

Which of the following is always true for the adiabatic expansion of gas.

Choose an answer

Temperature rises

Pressure rises

W=0

Q = 0

Among the elements A,B,C and D having atomic numbers 9,10,11, and 12 respectively, the correct order of ionization energies is.

Choose an answer

A > B > C >D

B > A > D > C

B > A > C > D

D > C > B > A

In group 17, the element with highest first ionization enthalpy belongs to.

Choose an answer

Period 1

Period 2

Period 7

Period 6

Which of the following is not a characteristics of terpenoids.

Choose an answer

They are pleasant smelling liquids

They are steam volatile

They are nitrogenous bases

they are insoluble in water

For highly paraffine , crude oil, the characterization factor will be in range of

Choose an answer

11.5-12.5

12.5-13.0

13.5-14.0

13.4-15.0

Which of the following has maximum number of unpaired electrons.

Choose an answer

Fe3+

Fe2+

Co2+

CO3+

Magnesium burns in air to give.

Choose an answer

MgO

MgCO3

Mg3N2

Both A and C

Are used as water repellents

Choose an answer

Carbides

Silicon

Silicones

Silicates

Which of the following technique is used to separate substance of high molecular weight of different charges.

Choose an answer

Dialysis

Electrophoresis

Solvent

None of the abvoe

The formation of daughter DNA's from parent DNA is called.

Choose an answer

Transalation

Transcription

Reproduction

Replication

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