Question # 1

Dilute hydrochloric acid solution cannot be concentrated by boiling beyond

Choose an answer

11%

33%

44%

22%

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

Magnesium keeps on burning in

Choose an answer

N₂

CO₂

N₂O

N₂as well as CO₂

Which of the following cannot be produced by acidic dehydration of alcohols?

Choose an answer

Ethers

Aldehyde

Alkyl Hydrogen sulphate

Alkene

Which of the following elements is most electronegative?

Choose an answer

Oxygen

Chlorine

Nitrogen

Fuorine

Sodium metal cannot be stored under

Choose an answer

Benzene

Kerosene oil

Alcohol

Toluene

Which of the following has greatest tendency to lose electron?

Choose an answer

F

Fr

S

Be

Which has largest first ionization energy?

Choose an answer

Li

Na

K

Rb

Heating a mixture of sodium benzoate and soda lime gives

Choose an answer

Methane

Benzene

Sodium benzoate

Calcium benzoate

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.

Al is more reactive than Fe but Al is less easily corroded than Fe because

Choose an answer

It is a noble metal

oxygen forms a protective reaction easily with water

Iron undergoes reaction easily with water

Fe form mono and divalent ions.

BiCl₃on hydrolysis forms a white precipitate of

Choose an answer

Bismuthio acid

Bismuth oxychloride

Bismuth pentachloride

Bismuth hydroxide.

Bromine is obtained on a commercial scale from

Choose an answer

Caliche

Carnallite

Common satl

Cryolite

Atmosphere of big/metropolitan cities is polluted most by

Choose an answer

Automobile exhausts

Pesticide residue

Household waste

Radio-active fall out

Octane number can be changed by

Choose an answer

Isomerisation

alkylation

Cyclisation

All of these

Benezene is obtained by fractional distillation of

Choose an answer

Heavy oil

Anthracene oil

Middle oil

Light oil

Which of the following does not reflect the periodicity of elements?

Choose an answer

Bonding begaviour

Electronegativity

Ionisation potential

Neutron/proton ratio

Which of the following oxides is peroxide?

Choose an answer

Na₂O₂

MnO₂

BaO

SO₂

Propyne on hydrolysis is presence of H₂SO₄and HgSO_{4 gives}

Choose an answer

Acetaldehyde

Acetone

Formaldehyde

None

Which is not a a colligative property?

Choose an answer

Osmotic pressure

Lowering of vapour pressure

Depression of freezing point

Elevation of boiling point

Ozane is not

Choose an answer

An allotrope

A powerful oxidizing agent

Paramegnetic

a bent molecule

More Classes

Other Links

NAT II Biological Science Chemistry 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