Question # 1

The element which has greatest value of Reduction potential is used as

Choose an answer

Strongest reducing agent

Weak oxidizing and strong reducing agent

Strongest oxidizing agent

None of these

Keeping in view the charge density select the compound amoung the following having highest lattic energy:

Choose an answer

LiBr

KCI

MgO

NaF

Which of the following is a macronutrient?

Choose an answer

Boron

Iron

Copper

Carbon

Chlorination of water is effective for

Choose an answer

Killing pathogens

Removing dust

Removing hardness

Increasing oxygen content

Boiling point of water remains 100°C although heat is continuous supplied. it is because

Choose an answer

decomposition of water takes place

hydrogen bonding is increased

external atmospheric pressure is not changing

kinetic energy of H₂O molecules is increasing

There are 20 amino acids found in protein which is not the property of these amino acids

Choose an answer

They are all alpha-amino acids

They are all optically active

They have high decomposition point

They are water soluble

Which of the following is the correct equation to calculate relative molecular mass of a gas

Choose an answer

M=mPRTV

M=mPR/VT

M=PV/mRT

M=mRT/PV

Plastic are a pollution problem because many plastics

Choose an answer

Burn to produce toxic fumes

Decompose to produce toxic products

Are made from petroleum

Are very inflammable

Ethanol reacts with sodium metal to liberate

Choose an answer

CO2 gas

CO gas

H2 gas

Steam

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

In Pakistan consumption per person is:

Choose an answer

8kg

5kg

10kg

6kg

Which statement is true for Na and Na⁺

Choose an answer

Size of Na is smaller than Na⁺

Size of Na is greater than Na⁺

Both have same properties.

Both have equal sizes.

Potassium hexacyanoferrate (II) has the formula

Choose an answer

K₄[Fe(CN)₆]

K₃[Fe(CN)₆]

K₂[Fe(CN)₆]

K [Fe(CN)₆]

The rate of E₁reaction depends upon

Choose an answer

The concentration of substrate

The concentration of nucleophile

THe concentration of substrate as well as nucleophile

None of the above

At present the number of cement factories is Pakistan are

Choose an answer

20

22

25

30

Li, Be, B, C, O, Fl Ne are elements of

Choose an answer

Second period

First period

Third period

Fourth period

Butyric acid was named from butyrum means:

Choose an answer

Red out

Vinegar

Butter

Milk

An oil or fat with no double bond have iodine number:

Choose an answer

Zero

100%

50%

Minimum

The sun of all the energies of atoms, molecule, ion, within system is called

Choose an answer

Enthalpy

K.E. of the system

Internal energy

None

Pollutant of automobile exhausts that affects nervous system/produces mental diseases is

Choose an answer

Mercury

Lead

Nitrogen oxide

Sulphuric oxide

The most reactive compound for electrophilic nitration will be

Choose an answer

Benzyl chloride

Benzoic acid

Nitrobenzene

Chlorobenzene

The solubility of PbF₂is 2.6 x 10^-3mole dm^-3then its solubility product is

Choose an answer

2.6 x 10^-3

6.76 x 10^-6

5.2 x 10^-6

7.0 x 10^-8

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