Question # 1

Which statement about an atom is true ?

Choose an answer

The number of neutrons is not equal to number of electrons

Mass number is less than atomic number

All the elements have only one mass number

Mass number can be equal to atomic number

Organic acid without a carboxylic acid group is

Choose an answer

Ascorbic acid

Vinegar

Oxalic acid

Picric acid

Mottling of teeth is due to presence of an element in drinking water

Choose an answer

Mercury

Fluorine

Boron

Chlorine

acetylene can be converted into-while passing through a Cu-tube at 300°C:

Choose an answer

Glyoxal

Vinyl acetylene

Vinyl alcohol

Benzene

Oxidation reduction is done by

Choose an answer

Oxidoreductase

Lipases

Lyase

None of these

The amount of solute present in the given amount of solvent is called

Choose an answer

Molarity

Molality

Concentration

Solubility

Which of the following alcohols cannot be produced by treatment of aldehydes or ketones with NaBh₄or LiAH₄?

Choose an answer

1-Propanol

2-Propanol

2-Methyl2-Proponal

Ethanol

What is not a common use of methane

Choose an answer

As a fuel

For the preparation of haloaklanes

For the preparation of methyl alcohol

For the preparation of sulphuric acid

During reaction of O₂and alkenes, a product:

Choose an answer

Glycol

Epxide

Halohydrin

Ethylene glycol

Which one is primary alcohol?

Choose an answer

Buten-2-ol

Propan-2-ol

Butaon-1-ol

2,3-Dimethylhexane-4-ol

Which is not a fossil fuel

Choose an answer

Petroleum

Coal

Natural gas

None of them

Preparation of ethylbenzene by the reaction of bromobenzene, ethylbromide and sodium is called

Choose an answer

Wurtz reaction

Fitting reaction

Wurtz fitting reaction

None of these

Internal energy of a system is equal to

Choose an answer

Kinetic energy of particles

Potential energy due to binding forces between particles

Sum of kinetic energy plus potential energy of the particles

Heat contents

Which of the following is a carbonate are?

Choose an answer

Pyrolusite

Malchite

Diaspore

cassiterite

Choose an answer

Which is not carboxylic acid with pungent smell?

Choose an answer

Formic acid

Acetic acid

Ethanoic acid

Butyric acid

Which of these polymers is a synthetic polymer?

Choose an answer

Animal fat

Starch

Cellulose

Polyester

The filtration process is used to separate solid from:

Choose an answer

Liquid

Gas

Solid

All of above

Given below are some statements concerning formic acid, which of them is true?

Choose an answer

It is a weaker acid than acetic acid

It is a reducing agent

When its calcium salt is heated, it forms a ketone

It is an oxidizing agent

n + l value for 4f will

Choose an answer

2

5

7

9

Which one of the following substances is a synthetic polyester

Choose an answer

Cotton

Nylon

Rayon

Terylene

Elimination bimolecular reactions usually obey

Choose an answer

First order kinetics

Second order kinetics

Third order kinetics

Zero order kinetics

Increased asthmatic attacks in certain seasons are related to

Choose an answer

Inhalation of seasonal pollen

Eating of seasonal vegetables

Low temperature

Wet and dry environment

A solution has pH = 0, its H⁺ion concentration is

Choose an answer

1 x 10^-14

1 x 10¹⁴

1 x 10¹

1

A molecule in which sp²hybrid orbitals are used by the central atom in forming covalent bonds in

Choose an answer

He₂

SO₂

PCl₅

N₂

Which of the following element is most reactive

Choose an answer

Li

Na

K

Cs

Alkanes are soluble in all except

Choose an answer

Benzene

Ether

Water

Carbon tetra chloride

Which of the following is an isomer of ethanol

Choose an answer

CH₃OCH₃

C₂H₅OC₂H₅

CH₃OH

C₂H₅OH

Colligative properties are the properties of :

Choose an answer

Dilute solutions which behave as nearly ideal solutions.

Concentrated solutions which behave as nearly non-ideal solutions.

Both(i) and (ii)

Neither (i) nor (ii)

In which of the following reactions is the inorganic reagent acting as a nucleophile

Choose an answer

Ethylene combines with water in the presence of H₂SO₄+ HgSO₄and forms

Choose an answer

Ethyle chloride

Ethyle alcohol

Carboxylic acid

None of these

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