Question # 1

The compounds whose formation require a host compound and a guest compound are called.

Choose an answer

Exclusion compounds

Inclusion compounds

Crystal compounds

None of the above

Which of the following process is not related with cannot cycle.

Choose an answer

Iso thermal expansion

Adiabatic expansion

Isothermal compression

Isobaric compression

A boy accidently splashes a few drops of conc. H2SO4 on his cotton shirt. A few minutes later, the splashed part blacken and holes appear.This is because the sulphuric acid.

Choose an answer

Heats up the cotton so that it burns

Dehydrates the cotton

Causes cotton to react with oxygen of the air

Removes the elements of water from cotton

Form electron deficient compounds

Choose an answer

B

AI

Both B and AI

None of above

Result of ozone hole is.

Choose an answer

Acid rain

Global warming

Increased amount of CO2

Greater exposure of earth to U.V. rays.

Biogical role of nucleic acid doe snot include

Choose an answer

Genetic continuity

Protein syathesis

Hybridization

Mutation

What ASTM test for compression is designated for plastics.

Choose an answer

D 638

D 695

D 790

D 732

The nature of bonds in compounds of carbon and silicon is mostly

Choose an answer

Covalent

Electrovalent

Metallic

Both A and B

The stabilization of the dispersed phase in a lyophobic sol is due to

Choose an answer

Liking for the dispersion medium

The surface tension of the medium

The formation of an electrical layer between the two phases

The viscosity of the medium

Stainless steel consists of which elements.

Choose an answer

Fe only

Cr only

Fe and Ni

Fe ,Ni and Cr

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

The magnitude of electron affinity depends on.

Choose an answer

Atomic size

Nuclear charge

Electronic configuration

All of the above

When fullerencs were discovered they were thought to be

Choose an answer

First example of spherical aromatic molecule

First example of spherical non aromatic molecule

First example of diamond lime molecule

None of the above

Which of the following process involves the use fo organic compound as an electron acceptor.

Choose an answer

Aerobic respiration

Anaerobic respiration

Fermentation

Glycolsis

Ozone layer of stratosphere requires protection from indiscriminate use of.

Choose an answer

Fungicides, insecticides, bactericides and medicines

Aerosols and high flying jets

Atomic explosions and industrial wastes

Weather ballons

Complete hydrolysis of nucleotide result in the formation of.

Choose an answer

Heterocyclic bases

A pentose

A phosphate ion

All of these

Human hearing is sensitive to frequency in the range of about

Choose an answer

10,000 - 20,000 Hz

10 - 10,000 Hz

16- 20,000 Hz

None of the above

Which of the following quantity is correct for micro analysis.

Choose an answer

1 -10 mg or < 50 ml

10-20 mg or > 50 mL

50-100 mg or < 100 mL

None of above

The unit of nucleic acid having base sugar combination is called.

Choose an answer

Nucliec acid

Nucleoside

Nucleotide

None of these

Which two atoms of hydrogen combine to form a molecule of hydrogen gas. the energy of the hydrogen molecule is.

Choose an answer

Higher than that of separate H atoms

Equal to that of separate H atoms

Lower than that of separate H atoms

Sometimes lower and sometimes higher than that of separate H.

Dry distillation of amino acids with barium hydroxide yields.

Choose an answer

Acids

Amines

Alcohols

Hydroxy acids

Aluminum is usually extracted from

Choose an answer

Bauxite

Corundum

Feldepar

Alumite

When a concentrated solute of an electrolyte is diluted.

Choose an answer

Its specific conductance increases

Its equivalent conductance decreases

The specific conductance decreases and equivalent conductance increases

Both specific and equivalent conductance increase

Strongest inter molecular hydrogen bond is formed in

Choose an answer

H2O

NH3

HF

H2S

Commercial incinerators produce.

Choose an answer

Smoke

CO

NOx

All above

Which of the following elements has the highest ionization energy.

Choose an answer

Na

Si

Ar

Cl

Which of the following concentration term is used in respect of standard solutions.

Choose an answer

Normality

Formality

Molarity

All of above

Which of the following pollutant result from roasting and heating processes.

Choose an answer

Dust

Smoke

Metal fumes

All above

Hypo is used in photography to.

Choose an answer

Reduce AgBr to metallic silver

Remove silver a silver salt

Remove undecomposed silver bromide as soluble complex

Remove reduced silver

Which substance has the greatest lattice energy.

Choose an answer

CuBr

MgO

KI

NaF

Which of the following cast irons is a high carbon, iron carbon silicon alloy.

Choose an answer

Deorizers

Deoxidizers

Deoxifiers

Deterrent

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