Question # 1

The quantum number which describe the orientation of the orbitals is

Choose an answer

Spin quantum number

Principle quantum number

Azimathal quantum number

Magnetic quantum number

Among the following polymers, the strongest molecular forces are present in

Choose an answer

Elastomers

Fibres

Thermoplactics

Thermosetting polymers

In exothermic reversible reaction increase in temperature shift the equilibrium to :

Choose an answer

Remains unchanged.

Product side.

Reactant side.

None of above.

The bibre which is composed of at least 85% by weight of acrylonitrile is known as

Choose an answer

Royan fibre

Azlon fibre

Saran binre

Acrylic fibre

When a compound X is passed through a dilute alkaline solution of KMnO₄the pink colour of solution is discharged. The compound X is possbibly

Choose an answer

Methane

Ethane

Ethene

Benzene

In fructose the possible optical isomers are

Choose an answer

12

8

16

4

Hypo is used in photography for

Choose an answer

Developing picture

Picture printed

The colour of picture

The fixation of picture

The order of dehydration of alcohol

Choose an answer

10> 20> 30

10> 30> 20

20> 30> 10

30> 20> 10

Pauli's principle is applicable to

Choose an answer

Degenerate orbits

Two electrons in the same orbital

One electron

None

Which technique is used to determine the absorption of radiations?

Choose an answer

Dilatometer method

Optical rotation method

Spectrometry

Refractometric method

Coupling of Pb with its Pb⁺⁺/Pb = -0.13 V and Ag with Ag⁺/ Ag = +0.80 V, the cell reaction

Choose an answer

Which of the following is not aromatic hydrogencarbon

Choose an answer

Benzene

Naphthalene

Toluene

Cyclohexene

Two moles of acetic acid are heated with P₂O₅the product formed is

Choose an answer

2 moles of ethyl alcohol

Formic anhydride

Acetic anhydride

2 moles of methyl cyanide

The filtration process is used to to separate solid from :

Choose an answer

Liquid.

Gas.

Solid.

All of above.

CFCs undergo homolytic fission by uv light in the stratosphere which radical could result from this irradiations of CHCICF₂Cl.

Choose an answer

CHF Cl C FCl

CH Cl CF₂Cl

CHF CF₂Cl

C FCl CF₂Cl

Choose an answer

In Dow's method, phenol can be made from

Choose an answer

Chlorobenzene

Benzene

Toluene

Benzene sulphonic acid

Which bond shows maximum hydrogen bonding with water?

Choose an answer

CH₃OH

C₂H₅OH

CH₃----O----CH₃

C₆H₅OH

Industrial effuents have toxic synthetic organic compounds as well as heavy metals like

Choose an answer

Pb

Cr

Hg

All of these

Taste of lower alcohols is:

Choose an answer

Sweet

Bitter

Our

Salty

Which of the following is a product of destructive distillation of coal

Choose an answer

Ammonia

Coke

Cyanides

Kerosene

SN2 reaction can be best carried out with

Choose an answer

Primary alkyl halides

Secondary alkyl halides

Tertiary alkyl halides

All the three

The hydrocarbon which is used as an illuminating agent

Choose an answer

Methane

Methene

Methyne

B & C

The normal amount of overhead ozone is about

Choose an answer

250 Du

300 DU

350 DU

400 DU

A pair of elements in the same family in the periodic classification is

Choose an answer

Cl and C

Ca and Al

N and Ne

Na and K

the unreactivity of alkanes is based upon

Choose an answer

Inertness of sigma bond

Non-polarity of the bonds

Both A and B

None of above

Which one of the followings is a heterocyclic compound

Choose an answer

Cyclohexanol

Phenol

Pyridine

Anthracene

The value of charge on electron is

Choose an answer

1.602 x 10^-19coulombs

1.602 x 10^-18coulombs

1.602 x 10^-17coulombs

1.602 x 10^-16coulombs

pH of water is 7, if 0.01 M NaOH is added, than its pH is

Choose an answer

12

14

zero

10

The branch of chemistry which deals with thermal energy changes in chemical reactions is called

Choose an answer

Chemical kinetic

Thermodynamics

Thermochemistry

Mechanics

The apex angle of the folded filter paper is slightly greater than :

Choose an answer

60°

30°

45°

90°

More Classes

Other Links

ECAT Chemistry Online 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