Question # 1

The raw materials for the manufacture of urea fertilizer is

Choose an answer

Hydrogen and ammonia

Steam, methane, ammonia

Methane and air

None of these

The classify the elements, Newland gave the idea of

Choose an answer

Octaves

Triads

Atomic volume

Atomic mass

95% alcohol is called

Choose an answer

Rectified spirit

Spirit of wine

Spirit

Methylated

Environmental pollution affects

Choose an answer

Biotic components

Plants only

Man only

Biotic and abiotic components of environment

Which one of the following is a buffer

Choose an answer

HCI + NaCI solution

CH₃COOH + CH₃COONH₄solution

H₂SO₄+ CaSO₄solution

CH₃COOH + CH₃COONa

The characteristic reactions of alkanes are

Choose an answer

Addition reactions

Substitution reactions

Condensation reactions

Polymerization reactions

Hydrolysis of ethyl-acetate (ester) has order of reaction :

Choose an answer

3

2

1

Silver mirror test is applied for

Choose an answer

Aldehydes

Alcohols

Acids

Esters

Cannizzaro reaction is not given by

Choose an answer

Trimethyl acetaldehyde

Acetaldehyde

Benzaldehyde

Formaldehyde

Vegetable oils are

Choose an answer

Unsaturated fatty acids

Glycerides of unsaturated fatty acids

Glyccerides of saturated fatty acids

Essential oils obtained from plants

Partial pressure of a solution component is directly proportional to its mole fraction. This statement is known as

Choose an answer

Henry's law

Raoult's law

Distribution law

Ostwald's dilution law

The osmotic pressure of a dilute solution is directly proportional to the

Choose an answer

Diffusion rate of the solute

Ionic concentration

Elevation in boiling point

Flow of solvent from a concentrated to a dilute solution

Tetrabromoethane on treatment with alcoholic zinc gives

Choose an answer

Ethylbromide

Ethane

Ethene

Ethyne

Choose an answer

Increases

Decreases

Remains same

Cannot be predicted

Which of the following is not related to transition metals

Choose an answer

They have a high tensile strength

They are ductile

They are malleable

They have low melting points

E₂has molecularity :

Choose an answer

One

Two

Three

Half

Hydrolysis of alkyl nitriles is done to get carboxylic acids in the presence of

Choose an answer

Mineral acids

Mineral alkalies

Organics acids

Minerals acids & alkalies

Half life period of a reaction is inversely proportion to the initial concentration of the reactant, then order of reaction is

Choose an answer

Third order

Second order

Fist order

Zero order

Choose an answer

High temperature

Low temperature

Low pressure

High pressure

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

It decolourises aqueous bromine rapidly

It is insoluble in water

It reduces Fehling's reagent

Two molecules react with each other in the presence of a strong acid

Ifk_cof a reaction productis verylarge, it indicates that equilibrium occurs :

Choose an answer

With the help of a catalyst.

With no forward reaction.

At a low product concentration.

At a high product concentration.

For preparing an alkane, a concentrated aqueous solution of sodium or potassium salt of saturated carboxylic acid is subjected to

Choose an answer

Hydrolysis

Oxidation

Hydrogenation

Electrolysis

Calculate the amount of charge flowing in 2 minute in a wire of resistance 10Ωwhen a potential difference of 20 V is applied

Choose an answer

120 C

240 C

20 C

4 C

An azeotropic mixture of two liquids boils at a lower temperature than either of them when :

Choose an answer

It is saturated.

It shows positive deviation from Raoult's law.

It show negative deviation from Raoult's law.

It is metastable.

For which system does the equilibrium constant. K_chas units of

Choose an answer

Gasoline is a mixture of hydrocarbons containing carbon atoms

Choose an answer

5 to 10

5 to 8

5 to 12

5 to 11

Classical smog occurs in palces of

Choose an answer

Excess SO₂

Low temperature

High temperature

Excess NH₃

Which period starts from ₁₁Sc to ₃₀Zn ?

Choose an answer

First Period

Second Period

Third Period

4th Period

Which one of the following statements is not correct

Choose an answer

A molecule is the smallest particle of an element which can exist independently

He is a molecule of helium

S₈is a molecule of sulphur

O₃is a molecule of oxygen

In Lucas test teriary alcohol make an oily layer

Choose an answer

Immediately

In 10 mins

On heating

Not

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