Question # 1

What is the ASTM tension testing designation for standard method for steel products.

Choose an answer

A 370

E 345

E8

E 9

Which is the correct configuration of Fe3+ (Z= 26)?

Choose an answer

[Ar] 4s² , 3d⁶

[Ar] 4s² , 4d⁵

[Ar] 3d⁵

None of these

At constant temperature , the decrease in Halmholts free energy is equal to.

Choose an answer

Decrease in entropy

Increase in entropy

Reversible work done by the system

All types of work done

The IUPAC name of C2(CN)3 is

Choose an answer

2,3-dicvano butanedinitrile

2,3 -dicyano -2- butenedinitrile

1,1,2,2-tetrcyanoethane

1,1,2,2, tetracyanocthenc

Which one of the following ionsis colourless.

Choose an answer

Cu+

Ni2+

Co2+

Fe3+

Which among the following is a Talse statement.

Choose an answer

SO3 is obtained by the catalytic oxidation of SO2

SO3 has trigonal planar geometry in gaseous state

SO3 in nauseous state has all S-O bonds equivalent

SO3 gas shows more solubility in water than in H2SO4

The common temperature detecting device in DTA are.

Choose an answer

Thermocouples

Thermopiles

Thermistore

All

B.P of heavy water is

Choose an answer

equal to that of ordinary water

greater than that of ordinary water

Less than that of ordinary water

equal to that of distilled water

Glycerol on dehyeration gives

Choose an answer

Allyl alcohol

Aerolein

CHOH = C= CHOH

-CHO -CHOH -CH2OH

The gases H2, N2, O2 and NH3 . H2 =2 , N2 = 28, O2 = 32 and NH3 =17 will effuse in the order.

Choose an answer

H2> N2> O2 > NH3

NH3 >O2 > N2 > H2

H2 > N2 > NH3 > O2

H2 >NH3 > N2 > O2

Sodium Tetra borate is used

Choose an answer

As alkaline buffer in dying & bleaching process

In manufacture of opticl glass

in enameling and making glaze

All above

Who coined the word nanotechnology.

Choose an answer

Eric Drexler

Richard Feynamann

Sumio tijma

Richard smalley

The energy gap between two bands so large that it effectively prevents the promotion of electron from the lower to the higher band such energy gap all called.

Choose an answer

Ionization zone

Dissociation zone

Distinction zone

Forbidden zone

Pick out the incorrect statement for Xe F6

Choose an answer

XeF6 is hydrolyzed practically to form XeOF4

It reacts with SiO2 to form Xe F4

On complete hydrolysis, it forms XeO3

It acts as F acceptor when treated with alkali metal fluoride, but cannot act as F donor to form complexes.

The IUPAC name of HOCCH2CH2CH2COOH is

Choose an answer

4- formylbutanoic acid

5- formylpentanoic acid

4- carboxybutanal

5- carboxypentanal

Ten elements Sc (Z = 21) to Zn (Z = 30) fill their 4s orbitals first and then 3d orbitals are called elements. of.

Choose an answer

3 d series.

4d Series

5d Series

None of above

The solution of the transition metal complexes having one or more unpaired electrons in the d-orbital are.

Choose an answer

Coloured

Colourless

White

None of above

Which of the following analytical techniques can be used to extract metal ion chelates.

Choose an answer

Solvent extractions

Evaporation

GC

Distillation

Which of the following is not adsorptive separation process.

Choose an answer

Parex

Olex

Penex

None of these

HCIO2 gives the structure of a.

Choose an answer

Linear

Angular

trigonal pyramidal

Tetra hddral

Carbon and Hydrogen are estimated by

Choose an answer

Liebig's method

Kjeldhal's method

Carries method

None of the above

Which of the following statements is false about enantiomers.

Choose an answer

Rotate plane of polarized light

Are superimposable mirror images

Nbonsuperimposable mirror images

All of the above

An induction of dipole or polarity in non polar bond, and consequent electron shifting along a chain of atoms is known as.

Choose an answer

Inductive effect

Resonance effect

Hyper conjugation

None of the above

A molecule returns from the excited singlet state to the ground singlet state with emission of light This process is known as

Choose an answer

Fluorescene

Scattering

Phosphorescence

Chemiluminescence

Which of the following is a mode of controlling pollution in big cities.

Choose an answer

Cleanliness and less use of insecticides

Proper disposal of organic wastes, sewage and industrial effluents

Broader roads and shifting of factories out of the residential areas

All of above

Which of the following is a planar molecule.

Choose an answer

Acetone

Formic acid

Acetic acid

All above

Arrange the hydrides of group 15 in the correct order of reducing nature.

Choose an answer

NH3 < PH3 < AsH3 < Sb H3 < BiH3

NH3 > PH3 >AsH3 >Sb H3 > BiH3

PH3 < AsH3 < SbH3 < BiH3 < NH3

PH3 > AsH3 > SbH3 > BiH3 > NH3

Which of the following is a natural polymer

Choose an answer

Nylon

Leucite

Cellulose

Polystyrene

In extraction of iron, the furnace charge consists of iron ore, coke and limestone. The function of limestone is to act as.

Choose an answer

An oxidation agent

A reducing agent

Flux

Slag

The commonly used catalyst in the manufacture of H2SO4

Choose an answer

Fe2O3 with a little CuO

v2O5

Platinized asbestos and MgSO4

All above

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

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