Question # 1

Phosphoric acid is the most important of the phosphorus oxy acids. Industrially phosphoric acid is prepared by.

Choose an answer

The Ostwald process

The Haber's process

The reaction of phosphate rock with sulphuric acid

The reaction P4O10 with water.

Ingold's isoprence rule states that in terpenoids isopren units are joined.

Choose an answer

Head to tail

Head to head

Tail to tail

In a random order

For a single -component system, the maximum degree of freedom in

Choose an answer

1

2

3

Between 3 and 6

How much amount of NaOH is required to prepare 100 mL of 1 N solution.

Choose an answer

80 g

4 g

40 g

zero

In Ostwald's process of manufacturing nitric acid a mixture of ammonia gas with air is mantained with ratio.

Choose an answer

1 : 4

1 :3

1: 8

1 : 10

Which of the following is not a chemical pollutant.

Choose an answer

Solid waste

Noiso

Insecticides

Liquid waste

An emulsifier is an agents which

Choose an answer

Stabilizes an emulsion

Homgeneises and emulsion

Causes coagulation of an emulsion

Helps in the formation of an emulsion

The branch of physics that mathematically describes the wave properties of electron in atomic is called.

Choose an answer

Statistical Mechanics

Quantum Mechanics

Chemical statistics

Thermodynamics

What cast iron has modular or spheroidal graphite?

Choose an answer

Ductile iron

Gray iron

White iron

Raw iron

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

Which of the following organic molecule is not aromatic.

Choose an answer

Benzene

Naphthalene

Anthracene

Cyclo-octatetraene

A major constituent of materials one whose amount in the materials is

Choose an answer

1% or more

0.1%

0.01%

0.001 %

Which of the following state is not correct regarding Langmunir adsorption theory.

Choose an answer

Adsorbent has specific equivalent sites

One site can adsorbs only one molecule

Adsorbed molecules cannot interact with each other

Adsorption is a static process

The greater stability of bonzyl carbonium ion as compared to t-butyl carbonium ion is due to.

Choose an answer

Inductive effect

Resonance effect

Electrometric effect

All above

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

Choose an answer

Na

K

Mg

Ca

Which of the following sets of quantum number is possible.

Choose an answer

n = 4, l = 3, m = -3 ,s = 0

n = 4, l = 0, m = 0, s =+1/2

n = 4, l = 4, m = -4, s = -1/2

None of these

Glass electrode cannot be used to measure the pH of pure.

Choose an answer

Acetic acid

Ethyl alcohol

Gelatin

All above

The element with maximum first ionization energy is.

Choose an answer

B

N

O

C

In each period, the most electropositive element belongs to group.

Choose an answer

18

17

1

2

Beer's law is followed in

Choose an answer

Flame photometry

Atomic absorption spectrophotometry

Mass spectrometry

Potentiometry

Which of the following substance is released into environment in the nuclear power plants.

Choose an answer

Iodine -131

Argon - 41

Sr-90

Cs- 137

All above

The smog is essentially caused by the presence of.

Choose an answer

O3 and N2

O2 and N2

Oxides of sulphur and nitrogen

O2 and O3

What is the minimum tensile strength of gray Cast Iron class 50

Choose an answer

25000 ibf /in²

50000 ibf/in²

100000 ibf/in²

900000 ib/in²

Which of the following method is used to separate small molecules form the larges molecules from the larger molecules in diffusing through a membrane.

Choose an answer

Dialysis

HPLC

FPLC

TLC

The liquor is screened to exclude ________ material

Choose an answer

Fibrous

Polymers

Maltose

Sucrose

Fish die in water bodies polluted by sewage due to.

Choose an answer

Pathogens

Clogging of gills by silt

Reduction in dissolved oxygen

Foul smell

Which of the following are neutral ligands.

Choose an answer

NH3

H2O

CO & NO

All of above

The name hydrogen was proposed by.

Choose an answer

Lavoisier

Rutherford

Henry Cavandish

Scheele

Sodium reacts with excess of oxygen to form

Choose an answer

Na2O

NaO2

Na2O2

NaO

Oxidative enzymes are responsible for

Choose an answer

Biological processes

Biological oxidation

Biological hydrolysis

Biological isomerisation

Ozone is stratosphere is depleted by

Choose an answer

CF2Cl2

C7F16

C6H6Cl6

C6F6

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