Question # 1

Formula of sodium beryllite is

Choose an answer

Na2B4O7

Na2BeO2

BeONa

Na2B4O7 .10 H2O

The clotting time of blood is increased due to the deficiency of

Choose an answer

vitamin A

vitamin K

vitamin D

vitamin C

During the manufacturing process of cement the temperature of the decomposition zone goes up to:

Choose an answer

600°C

800°C

1000°C

1200°C

Which one among the following is not a good leaving group

Choose an answer

HSO4-

CI-

OH-

Br-

A graph between P and 1/V at constant temperature and number of moles of a gas meets the:

Choose an answer

Y-axis

X-axis

Origin

None of above

Which is not present as heteroatom in heteroeyclie compounds?

Choose an answer

Sulphur

Nitrogen

Oxygen

Chlorine

The attractive forces which are created due to repulsion of electronic cloud of the molecules are

Choose an answer

dipole-dipole forces

ion dipole forces

instantaneous dipole-induced dipole forces

dipole-induced dipole forces

Types of bonds between C terminal and N terminal is

Choose an answer

Covalent

Disulphide bond

Peptide

Ionic

Eleven elements made part of earth mass:

Choose an answer

97.5%

98.5%

99.5%

100%

The conc.of dissolved molecular oxygen in water which act as the most important oxidizing agent ranges from:

Choose an answer

2ppm- 6ppm

4ppm--8ppm

2ppm--- 4ppm

2ppm --3ppm

Zinc reacts with dilute acids to liberate hydrogen. This is because:

Choose an answer

Zn2+ ion is a powertul osidising agent than H' ion

H+ ion is a powerful oxidising agent than Zn ion

Zn2+ ion is a powerful reducing agent than H' ion

H+' ion is a powerful reducing agent than Zn- ian

A zero order reaction is one in which :

Choose an answer

Rate is not affected by changing concentration of reactants.

concentration of reactants do not change with the passage of time.

Reactants do not react.

One reactants in large excess.

In the chemical combination of hydrogen and fluorine to form HF:

Choose an answer

Sodium atom donates major share of its electrons.

Hydrogen atom donates the major share of its electrons.

Both the atoms share the electrons equally.

None of above.

When rain is accompanied by a thunderstorm, the collected rain water will have a pH value

Choose an answer

Uninfluenced by occurrence of thuderstorm

Which depends on the amount of dust in air

Slightly lower than that of rain water without thunderstorm

Slighlty higher than that when the thunderstom is not there

The wave length of visible light is 500 nm. In S.I. unit this value is

Choose an answer

5 x 10^-8m

5 x 10^-9m

500 x 10^-7m

500 x 10^-9m

A pair of elements in the same family in the periodic classification is

Choose an answer

Cl and C

Ca and Al

N and Ne

Na and K

The amount of Si in the lithosphere is about

Choose an answer

27.72%

30.35%

35.30%

40.21%

1-butene an 2-butene are an example of

Choose an answer

Chian isomerism

Positional isomerism

Metamerism

Functional group isomerism

Which responds to +ve iodoform test?

Choose an answer

Butanol-1

Butan-1-al

Butanol-2

2-pentanone

Kinetic energy of the molecules is due to

Choose an answer

Transnational motion

Rotational motion

Vibrational motion

All of these

The ratio of the ionization energy of H and Be³⁺is

Choose an answer

1 : 1

1 : 3

1 : 9

1 : 16

Shahi Qilla may be destroyed by

Choose an answer

Flood in Ravi

Temperature mediated spoilage of marble

Air pollutants from Lahore chemical industries

All the above

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