Question # 1

Choose an answer

0.60

1.67

0.66

2.6

In lead accumulator the electrolyte is H₂SO₄solution is

Choose an answer

30% H₂SO₄

60% H₂SO₄

80% H₂SO₄

90% H₂SO₄

The velocity of photon is:

Choose an answer

Independent of its wavelength.

Depends on its wavelength.

Equal to square of its amplitude

Depends on its source.

Alcohols of low molecular weight are

Choose an answer

Soluble in water

Soluble in water on heating

Insoluble in water

Insoluble in all solvents

Select from the following which one is alcohol?

Choose an answer

CH₃-CH₂-OH

CH₃-O-CH₃

CH₃COOH

CH₂-CH₂-BR

pH of 1 molar NaOH is

Choose an answer

7

zero

14

10

Plaster of pares is obtained by heating

Choose an answer

Gypsum

Epsom

Lime stone

Dolomite

The amino group in 19α-amino acids is primary; only oneα-amino acid has secondary amino group which one is that

Choose an answer

Alanine

Glutamic acid

Glycine

Proline

A solutiion of 0.5 mole camphor in 100 grmas chloroform (K_b= 0.322) has rise in boiling point than that of chloroform by

Choose an answer

0.81°C

1.61°C

1.81°C

0.61°C

Which of the following is not an air

Choose an answer

N₂

N₂O

NO

CO

Choose an answer

Le-chatlier's principle

Only adding catalyst

Decreasing pressure

Decreasing temperature

The covalent bonds are

Choose an answer

Unidirectional

Bi-directional

Non-directional

Multi-directional

The formula of ketone is

Choose an answer

None of these

A solution consisting of 92 grams ethyl alcohol (C₂H₅OH) 96 grams methyl alcohol (CH₃OH) 90 grams water the mole fraction and mole percent of methyl alcohol is

Choose an answer

0.3. 30%

0.2, 30%

0.5, 30%

0.2, 20%

2.5 faradays of electricity is passed through solution of CuSO_{4. The number of gram equivalents of copper deposited on the cathode would be}

Choose an answer

1

2

2.5

1.25

Aromatic carboxylic acids have carboxyl group attached to group :

Choose an answer

Alkyl group

Aryl group

Phenyl group

Benzyl group

In electronic watches or electronic calculators the tiny batteries used are

Choose an answer

Alkaline battery

NICAD battery

Fuel cell

Silver oxide battery

How many isomeric disubtituted products are obtained by the introducing of second group in the ring

Choose an answer

Two

Three

Four

None

Ethylene can be prepared in the laboratory by heating together ethyl alcohol and

Choose an answer

HCI

Phenol

HF

H₂SO₄

When the degree of freedom increase the entropy ______

Choose an answer

Decreases

Increases

Remains same

All

Common names of carboxylic acids are given by then:

Choose an answer

Source

Person discovered

place

habit

Which of the following reagents is used to distinguish acetone and acetophenone

Choose an answer

NaHSO₃

Grinard reagent

Na₂SO₄

NH₄Cl

The correct order of reactivity of halogens with alkanes is

Choose an answer

l₂> Br₂> Cl₂> F₂

l₂> Cl₂> F₂> Br₂

F₂> Cl₂> l₂> Br₂

F₂> Cl₂> Br₂> l₂

Phenol was discovered by:

Choose an answer

Hofmann

Runge

Henderson

Bakelite

When n-hexane is heated in the presence of Pt at 500°C, it cyclists to give

Choose an answer

Benzene

Cyclohexene

Benzene

Toluene

Pressure volume work is

Choose an answer

The filtration process is used to to separate solid from :

Choose an answer

Liquid.

Gas.

Solid.

All of above.

The addition of a catalyst to a reaction changes the

Choose an answer

Enthalpy

Entropy

Nature of reactants

Energy of activation

Acetylene had a characteristic ethereal smell resembling that of

Choose an answer

Ginger

Vinegar

Garlic

Onion

Which of the following solutions has the highest boiling point ?

Choose an answer

5.85% solution of sodium chloride.

18.0% solution of glucose.

6.0% solution of urea.

All have same boiling points.

Choose an answer

Reaction occurs at STP

Reaction is exothermic

Reaction is endothermic

Number of moles of production and reactant are same

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