Question # 1

COD of water can be measured by

Choose an answer

Cr₂O₃

Cr₂O₄^-2ions

Cr₂O₇^-2ions

None of these

Cotton is an example of

Choose an answer

animal fibre

mineral fibre

vegetable fibre

synthetic fibre

The partial pressure of CH₄and O₂are 500 torr and 100 torr repectively in a 10 dm³vessel at 0°C. The ratio of number of molecules of CH₄: O₂is

Choose an answer

1: 2

5 : 1

5 : 2

2 : 1

What is the weight of 10 dm³of CO₂at 27°C and 2 atm?

Choose an answer

89.3 g

56.1 g

125 g

127 g

The amount of heat required to convert one mole of solid into liquid is called

Choose an answer

molar heat of fusion

heat of fusion

heat of vaporization

heat of liquefaction

Water is purified by the process:

Choose an answer

Aeration

Coagulation

Chlorination

All of these

Denaturation of protein means the structure of protein is disrupted indicate which factor does not denature protein

Choose an answer

Oxidizing agent

Heat protein

Keeping pH 7.35

pH changes

The geometry of diamonds is

Choose an answer

tetragonal

cubic

rhombohedral

none of these

Carboxylic acids reacts with sodium carbonate, & gas evolved in this reaction

Choose an answer

CO2

H2

CO

Both a &b

Which of the following may be called London dispersion forces

Choose an answer

dipole-dipole forces

ion-dipole forces

dipole-induced dipole forces

instantaneous dipole-induced dipole forces

According to Avogadros law 1 mole of gas at S.T.P has a volume of

Choose an answer

22.4 dm³

24 dm³

24000 cm³

2m³

Amongst the following the compound that can be most readily sulphonated is

Choose an answer

Toluene

Benzene

Nitrobenzene

Chlorobenzene

Replacement of hydrogen atom by - SO₃H group in benzene is called

Choose an answer

Nitration

Alkylation

Sulphonation

Acylation

Phosphide ion has the electronic structure similar to that of

Choose an answer

Nitride ion

Fluoride ion

Sodium ion

Chloride ion

Iodoform test is given by:

Choose an answer

Formaldehyde and Higher ketones

Formaldehyde

Acetaldehyde and methyl ketones

Acetaldehyde

Which of these polymers is an addition polymer?

Choose an answer

Nylon-6,6

Polystrene

Terylene

Epoxy resin

Choose an answer

8

4

9

3

Outer shells of two elements X and Y have two and six electrons respectively. If they combine, the expected formula of compound will be

Choose an answer

XY

X₂Y

X₂Y₃

XY₂

Organic synthetic or man made polymers are plastics, rubber and fibre. Which is not a synthetic polymer

Choose an answer

Silk

Polyester

Polyvinyl chloride

Nylon

The raw material to form nylon is

Choose an answer

Adipic acid

Butadiene

Isoprene

Ethylene

The most commonly and widely used nitrogen fertilizer in Pakistan is

Choose an answer

Urea

Ammonium nitrate

Ammonium sulphate

Ammonium chloride

The fibre which is made form acrylonitrile as monomer

Choose an answer

PVC

Rayon fibre

Acrylic fibre

Polyester fibre

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