Question # 1

Unit of ozone is?

Choose an answer

Debye

Dobson

Esu

Coulumb

The distribution of energies among the molecules of gases was studied by:

Choose an answer

Maxwell

Coulomb

Newton

Boltzmann

The number of atoms in 0.004 g of magnesium is close to

Choose an answer

24

2 x 10²⁰

10²⁰

6.02 x 10²³

The temperature of a gas is directly proportional to its

Choose an answer

average translational kinetic energy

enthalpy

internal energy

hydration energy

All of the following are essential amino acids except

Choose an answer

Lysine

Aspartate

Tryptophan

Hisitidine

The electrical conductivity of the metals decreases with the increasing temperature. This is because

Choose an answer

the number of free electrons decrease

the bonds of the metal atoms become weak

the to and fro motion of the metal ions decrease

the increase of to and fro motion of the metal ions hinders the free movement of electrons

Observed pressure of gas on the walls of container is less than actual pressure due to

Choose an answer

Hephazard motion

Inter molecular attractive forces

Elastic collision

Repulsive forces

Which of the following compounds does not exhibit positional isomerism?

Choose an answer

Alkynes

Nitroalkanes

Carboxylic acid

Alcohol

The particles in solids are

Choose an answer

widely separated and moving randomly

widely separated not moving

moving randomly but not separated

close together and vibrating slightly

Which Henderson equation is not correct?

Choose an answer

pH= pKa +log [ salt/acid]

pH = pKa - log [ salt/acid ]

pH= pKa - log[ acid/salt ]

Pka = pH - log [ salt/acid ]

The crystal system are of

Choose an answer

7 types

10 types

5 types

8 types

Ethyl alcohol prepared during fermentation is pure:

Choose an answer

20%

10%

11%

12%

Choose an answer

99.2%

99.5%

90.5%

96.2%

Volcanoes produce SO₂:

Choose an answer

47%

57%

67%

77%

A reaction in which an atom or a group of atoms replaces an atom or a group of atoms in the molecule of a substance is known as

Choose an answer

Addition reaction

Condensation reaction

Elimination reaction

Substitution reaction

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

K_bfor NH₄OH is 1.81 x 10^-5, then K_avalue of its conjugate base is

Choose an answer

1.81 x 10⁺⁵

1.81 x 10^-9

5.5 x 10^-9

5.5 x 10^-10

Non-formation of menisus by Hg in presence of O₃is due to the formation of

Choose an answer

Mercuric oxide

Mercurous oxide

Mercuric chloride

Mercurous chloride

Which of the following acid can be used as a catalyst in Friedal Craft's reactions

Choose an answer

AlCl₃

HNO₃

BeCl₂

NaCl

Which one of the following substance is no used as drying agent in desiccators

Choose an answer

Silica gel

CaCl₂

Phosphorous

NaCL(50%)

The ionization potential is lowest for the

Choose an answer

Halogens

Inert gases

Alkaline earth metals

Alkali metals

The electron releasing effect of methyl group is significant and it makes ring a good

Choose an answer

Electrophilic

Nucleophilic

Nucleophobic

Hydrophobic

More Classes

Other Links

Chemistry General Science Test Medium Mode 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