Question # 1

Natural fertilizer provides phosphorus to plants in the form of P₂O₅

Choose an answer

1.2 kg

2.2 kg

3.2 kg

4 kg

The digestion of fats in the intestines is aided by

Choose an answer

Diffusion

Protection

Peptization

Emulsification

Which of the following represents elements in order of increasing atomic size?

Choose an answer

I, Br, Cl

Na, Mg, C

C, N, O

Li, Na, K

In which molecule carbon atom is sp²hybridized

Choose an answer

CH₄

C2H₄

C₂H₂

None of the above

In Friedal-Craft's alkylation besides AlCl₃the other reactants are

Choose an answer

C6H6 + NH3

C6H6 + CH4

C6H6 + CH3Cl

C6H6 + CH3COCl

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

Choose an answer

It is a weaker acid than acetic

it is a reducing agent

When its calcium salt is heated, it forms a ketone

It is an oxidizing agent

Which one is not usually used for the crystallization?

Choose an answer

Acetone

Acetic acid

Sulphuric acid

Chloroform

Red P can be obtained from white P by

Choose an answer

Heating it with a catalyst in an inert atmosphere

Distilling it in an inert atmosphere

Dissolving it in CS₂and crystallzing

Melting it and pouring the liquid into water

Hybridization explain the ----------- of orbitals

Choose an answer

Type of Bonding

Shapes

Shape and Type of bonding

None of above

Sodium metal cannot be stored under

Choose an answer

Benzene

Kerosene oil

Alcohol

Toluene

Wt. of 112 ml of oxygen at NTP on liquification would be

Choose an answer

0.32 g

0.64 g

0.16 g

0.96 g

The percentage of oxygen in NaOH is

Choose an answer

40

60

8

10

When a carbon atom forms single bonds with other carbon atoms, these hybird orbitals overlap with the orbitals of hydrogen to form four bonds which are

Choose an answer

Three sigma and one P_i

Two sigma andtwo P_i

One sigma and three P_i

Sigma

Helium-oxygen mixture is used by deep sea divers in preference to nitrogen-oxygen mixture because

Choose an answer

Helium is much less soluble in blood than nitrogen

Helium is much less soluble in blood than helium

Under the sea nitrogen and oxygen react to give poisonous nitric oxide

Nitrogen is highly soluble in water.

2 g of oxygen contains number of atoms equal to that in

Choose an answer

0.5 g of hydrogen

4 g of sulphur

7 g of nitrogen

2.3 g of sodium

Salol is prepared from

Choose an answer

Salicyclic acid and phenol

Salicyclic acid and methyl alcohol.

Both

None

More Classes

Other Links

NAT II Physical 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