Question # 1

The reason why phenylamine is a much weaker base tahn ammonia when each is in aqueous solution to that.

Choose an answer

Teh ion pair of electron on two nitrogen atom of phenylamine is delocalised over the benzene ring.

The phenylamine molecule is too large to capture hydrogen ion easily

Phenylamine is much less soluble is water than is ammonia

The benzene ring has a tendency to increase the acidity of its substituents.

For a given mass of a gas if temperature increase

Choose an answer

Pressure and volume remain Constance

Volume increases provided pressure is kept constant

Pressure decreases provided volume is constant

Both volume and pressure decrease

The oxidation number of Mn in KMnO4

Choose an answer

+5

+7

+4

+3

LPG is use this

Choose an answer

Vehicles

Aviation Fuel

Home

All above

What is abuckyball

Choose an answer

A carbon molecule

Nickname for Mercedes -Benz's futuristic concept car (CIII)

Plastic explosives nanoparticle (C4)

Concrete nanoparticle with a compressive strength of 20 nanonewtons(C20)

Green houses are responsible for keeping our plant warm and sustaining life on the earth.

Choose an answer

CO2 & water vapours

CO2 & CFC

CO2 & H2O

CO2 & CH4

The designation of an orbital with n =4 and l = 1 in

Choose an answer

4 s

4 p

4 d

4 f

20 micron =____________________ nm

Choose an answer

20 x10^-9

20000

200

20x10⁹

The correct order of electron affinities of SI, P, and Cl is.

Choose an answer

P > Si > Cl

Cl > P > Si

Cl > Si, > P

Si > P . Cl

Glycine reacts with nitrous acid to form

Choose an answer

Methyl amino

Acetic acid

Zwitter ion

Glycollic acid

Solid substances consist of an ordered any of ions and solid as a whole is electrically.

Choose an answer

Conductor

Neurtal

Acidic

Basic

Which of the following is not a ligand or complexing agent.

Choose an answer

NH3

CH3COOH

EDTA

CN-

Which of the following is not a proper use of Ni.

Choose an answer

It is used as catalyst

It is used in alloy formation

It is used in the preparation of Monel metal

It is attached by alkalis

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

The number of mole of the solute dissolved per dm3 of the solution is called.

Choose an answer

Molality

Formality

Normality

Molarity

A considerable number of atoms pertaining to the surface_____ with the decreasing the particle size.

Choose an answer

Increase

Decrease

No effect

Both a and b

Which among the following elements has the highest value of IE.

Choose an answer

Mg

Na

Ca

Sr

Which of the following statements is not correct with respect to second law of thermodynamics.

Choose an answer

It helps in know the position of chemical equilibrium

It helps to know the position of chemical equilibrium

It determines the conversion of heat into work

It is based on Nerst heat theorem

Red brass contain about how many percent of zinc.

Choose an answer

20 %

15 %

30 %

25 %

In biological ecosystem which of the following substance is used by organisms.

Choose an answer

Water

Sunlight

Minerals

All above

The emission of light in a biological reaction in known as.

Choose an answer

Fluorencence

Phosphoreacence

Biolumineacence

Phtolysis

Acute toxicity is expressed by the term

Choose an answer

LD50

IC50

I 1/2

Mean life

Which of the following is an azo dye.

Choose an answer

Congo red

Rhodamine B

Ertythroein

Paraosaniline

Chlorination of benzene with excess chlorine in the presence of FeCl3 as Lewis acid gives.

Choose an answer

Chlorobenzene as a major product

o-dichlorobenzene as major product

p-dichloro benzene as an only product

A mixture of 0- and p- dichloro benzene

Petroleum is mixture of

Choose an answer

Petrol

Diesal

Petroleum

All of these

Which of the following property of liquids concern with the interval resistance to its flow.

Choose an answer

Refractive inded

Viscosity

Optical activity

Dipole moment

Dull red flame is observed with

Choose an answer

Calcium salt

Barium salt

Strontium salt

Sodium salt

An example of cyclic polyterpenoid is

Choose an answer

Myrcene

Alcoholic

Synthetic rubber

Natural rubber

Which pair of species can undergo chemical reaction with each other.

Choose an answer

CO+ NO

LiH and H2O

CO2 and HCl

CaH2 and SI H4

Which of the following health effect is caused by cadmium.

Choose an answer

Hypertension

Cardiovascular problem

Kidney damage

All above

The percentage of nitrogen in ammonium sulphate is__________%

Choose an answer

27

21

23

19

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