Question # 1

Which of the following has the maximum tendency to form complexes.

Choose an answer

K

Na

Rb

Li

Which treatment is done with pulp before delivering it to paper making machine.

Choose an answer

Pulp is disperse din water to make slurry

Mechanical refining or heating of the fibers

Addition of chemical additives and recycled fibres from the waste paper plant

All above

Suppose the activatin energy of a certain reaction is 250 kj/mol, If the rate constant at T1 =300 K is k1 and the rate constant at T2= 320 K is ks, then the reaction is ______ times faster at 320 K than at 300 K

Choose an answer

3 x 10^-29

0.067

525

15.0

Lithium shows diagonal relationship with

Choose an answer

Beryllium

Sodium

Magnesium

Calcium

Which of the following statements do not represent Lewis idea of acids and base?

Choose an answer

Compounds which have completely filled orbitals

Compounds which have incompletely filled orbitals

Compounds in which the central atom can expand its octel

All simple metal ions like Ag+, Al3+ etc.

Which of the following process is not related with cannot cycle.

Choose an answer

Iso thermal expansion

Adiabatic expansion

Isothermal compression

Isobaric compression

The compound (CH3)3COH according to IUPAC is known as.

Choose an answer

Tert Butanol

2,2 -Dumethyl -Propanol

2- Methyl -2-propanol

Tert Alcohol

The electrolytic method super passes all other methods due to.

Choose an answer

Furity

Cheapness

Easy available

All above

Co ordinate compounds are

Choose an answer

Polar

Non polar

Dem polar

None of above

Which of the following element is usually determined by flame photometry.

Choose an answer

Li

Na

K

All above elements

Which of the following elements with excess oxygen to form proxides.

Choose an answer

Ca

Mg

Li

Ba

How many oxygen atoms lined up in a now would fit in a one nanometer speace.

Choose an answer

None an oxygen atoms is bigger than 1 nm

One

Seven

None of the above

Chemical and physical properties of metal nano particles of atoms were observed to change periodically depending upon

Choose an answer

Number of atoms in a particle

Shape of particle

type of organization

All of the above

Among the elements A, B,C and D having atomic numbers 7,8,9 AND 12 Respectively, the element with smallest size and highest IE is.

Choose an answer

A

B

C

D

Which of the following is not a colligative property.

Choose an answer

Elevation of B.P.

Depresaion in F.P

Viscosity

Osmotic pressure

Which of the following statements is NOT true .

Choose an answer

About 10% of the earth's crust is iron

Pure iron does not have significant industrial use because it is too weak and soft.

Steel in an alloy of carbon and iron with limits on the amount of carbon

None of above

Acid rain effects

Choose an answer

Human being

Crops

Aquatic life

All above

The flow of solvent into a solution when two are separated by a semi -permeable membrane is called.

Choose an answer

Mixing

Effusion

Diffusion

Osmosis

Which of the following techniques is used for the separation of macromolecules polymers.

Choose an answer

Size exclusion chromatogrphy

TLC

GLC

HPLC

Which of the following level is an indicator of hearing loss.

Choose an answer

> 25 dB

< 25 dB

<20 dB

None of these

The Hall process involves the reduction of Al2O3 to aluminium by

Choose an answer

Carbon

Carbon monoxide

Molecular hydrogen

Electrolysis

Which of the following statement is not correct with respect to limitations of Hammett equation.

Choose an answer

It is only applicable to aromatic systems

Only applicable to aliphatic systems

It is not valid for m-substituent

Glass obtained by placing a layer of butyral plastic with a suitable adhesive between two layers of glass and cementing them by heat and pressure is called.

Choose an answer

Glass wool

Safety glass

Optical glass

Jena glass

Concentrated aqueous sodium hydroxide can separate a mixture of.

Choose an answer

Al3+ and Sn2+

Al3+ and Fe3+

Al3+ and Zn2+

Zn2+ and Pb2+

The rate at which a substance reacts depends on its.

Choose an answer

Molecular mass

Active mass

Equivalent mass

Molar mass

Metal crystallize is system having co ordination number

Choose an answer

8

12

14

any one of above

Tetra halides do not undergo hydrolysis

Choose an answer

C

Si

Sn

Pb

Which of the following is a planar molecule.

Choose an answer

Acetone

Formic acid

Acetic acid

All above

The inert gasses AR, Ka, and Xe form solid compounds with certain organic molecules under pressure..

Choose an answer

Halides

Hydrates

Clathrates

All of above

Which of the following is raw material not present on the cement.

Choose an answer

Lime stone

Gypsum

Red lead

Blast furnace slag

Mostly used solvents for ionic compounds.

Choose an answer

Liquid ammonia

Liquid SO2

Liquid HF

All above

More Classes

Other Links

PPSC Chemistry Full Book Test 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

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