Question # 1

The device that convert the chemical energy of fuel directly into electrical energy is called.

Choose an answer

Galvanic cell

Electrolytic cell

Fuel cell

Concentration cell

Increasing oxygen contents in oxyacids leads to.

Choose an answer

An increase in thermal stability

An increase in acid strength

A decrease in oxidizing power

All above

The configuration of valence shell of certain atom X is 3s2 , 3p5, which valences can it exhibit.

Choose an answer

1,3 only

1,5 only

1,3,5,7

1,3,4

Boron and aluminum halides are electron deficient compounds in this respect. they act as.

Choose an answer

Lewis acid

Lewis base

Oxidizing agent

Reducing agent

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

Which of the following are anionic detergents.

Choose an answer

Sodium salts of sulfonated long chain alcohol

Ester of stearic acid and polythlene glycol

Quaternary ammonium salt of amine with acetate ion

Sodium salts of sulfonated long chain hydrocarbons

Which of the following elements has the highest ionization energy.

Choose an answer

Na

Si

Ar

Cl

Monomer of neoprene rubber to

Choose an answer

1-chloro 1,3- butadiene

2- chlro, 1,3-butadiene

2-Bromo -1,3- butadiene

2-Methyl 1,3-butadiene

Putrefaction is

Choose an answer

Hydrolysis of proteins

Reduction of proteins

Bacterial oxidation of proteins

All of these

On industrial scale chlorine is prepared by

Choose an answer

Dennis method

Deacon's process

Plantner's process

Aludels process

Potentiometry is based on the measurement of which physical property.

Choose an answer

Electrical conductance

Electrical potential

Thermal conductance

Current

Smoke is a dispersion of

Choose an answer

Gas in gas

Gas in solid

Solid in gas

Liquid in gas

The angle of rotation in a polarimeter depends on.

Choose an answer

Nature of the compound

Nature of the solvent

Wavelength of the light used

All above factors.

Cement containing higher percentage of gypsum than required.

Choose an answer

Sets slowly

Sets repidly

_{Does not set at all}

Has no effect

The relative lowering of vapour pressure of a solution on the addition of non -volatile solute.

Choose an answer

Is equal to the mole fraction of solute

Is equal to the sum of the mole fraction of the solute and solvent

Depends upon the nature of the solute

Depends upon the mole fraction of the solvent

Which of the following statements is false about enantiomers.

Choose an answer

Rotate plane of polarized light

Are superimposable mirror images

Nbonsuperimposable mirror images

All of the above

Which of the following to non -auditory effect of noise on human body.

Choose an answer

Changes in the Vascular tone

_{Increase in the blood pressure}

Wakening of the coloured vision

All above

The maximum noise level at which a man can work for 8 hours is.

Choose an answer

80 dB

70 dB

90 dB

60 dB

The Lewis formula of SOCl2 the total number of bond pairs and lone pairs of electrons around sulphur are.

Choose an answer

2,1

2 ,2

3 ,1

3 ,0

Which of the following technique describes titrations in which a standard iodine solution is need.

Choose an answer

Iodometry

Iodimetry

potentiometry

Argentometry

Acid rain effects

Choose an answer

Human being

Crops

Aquatic life

All above

Not a Characteristic property of ceramic material

Choose an answer

High temperature stability

High mechanical strength

Low elongation

Low hardness

Which of the following is the most abundant alkaline earth metal.

Choose an answer

Be

Mg

Ca

Sr

Bitumen is used in

Choose an answer

Electric generators

Road surfacing

Coal tar

All of above

What group of steels are molybdenum high sped steels.

Choose an answer

Group A

Group D

Group M

Group H

The element having highest ionization energy and least electron affinity belong to

Choose an answer

Period 1 , group 18

Period 2, group 17

Period 2, group 1

Period 2, group 2

Which of the following technique in current voltage technique

Choose an answer

Amperometry

Voltammetry

Poteatiomertry

Polarography

One ppm solution of NaOH Contain 1000 mg of the solute per how much of the volume of the solution.

Choose an answer

1000 mL

100 mL

10 mL

1 mL

Which of the following electrode is normally used as reference electrode for a potentiometer.

Choose an answer

Platinum electrode

Calomel electrrode

Silver electrode

Copper electrode

The oxidation number Xe in XeOF2 is

Choose an answer

0

+2

+4

+3

Coagulation of protein on treatment with heavy motal salts or heating is called.

Choose an answer

Decolorisation

Denaturation

^{Sedimentation process}

Reversible precipitation

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