Question # 1

The formula of Tetraboric acid is.

Choose an answer

H2BO3

HBO2

H2B4O7

H6B4O9

Which of the following reaction cannot be used for the synthesis of a amino acids.

Choose an answer

Gabriel phthalimide

Streckers synthesis

Sorensen synthesis

Schmidt synthesis

Finely divided iron combines with CO to give.

Choose an answer

Fe(CO)5

Fe2(CO)9

Fe(CO)12

Fe(CO)6

The ionization energy of N is more than that of oxygen becasue.

Choose an answer

Nitrogen has half filled p orbitals

Nitrogen atom is smaller in size than oxygen atom

Nitrogen contains less number of electrons

Nitrogen is less electronegative

A colloidal system in which both the dispersion phase and dispersed phase are liquid is.

Choose an answer

Smoke

Emulsion

Whipped cream

Mist

Which one of the following ions is colourless.

Choose an answer

Cu+

Co2+

Ni2+

Fe3+

Which of the following molecules belongs to C_av point group.

Choose an answer

H2O

H2S

NH3

BF3

Which of the following ions does not have the electronic configuration same as that of neon.

Choose an answer

F-

O2-

Na+

Ca2+

The bond along Sp2 hybridization is.

Choose an answer

180^o

120^o

109.5^o

160^o

The emission of light in a biological reaction is known as

Choose an answer

Fluorescence

Phosphorescence

Bioluminescence

Photolysia

The volume of given mass of gas at constant pressure is directly proportional to the absolute temperature.This is a statement of.

Choose an answer

Charles's law

Boyle's law

Avogadro's law

Dalton's law

Which of the following is not an acid radical

Choose an answer

Cl-

Br-

K+

I-

Which of following is used as make up chemical in Kraft process.

Choose an answer

Na2CO3

KCl

Na2SO4

NaOH

The dimensions for first order rate constant are.

Choose an answer

s-1

s mol-1

mol-1 s-1

s

Which of the following analytical method is based on the rotation of light ratiation

Choose an answer

Refractomerty

Polarimetry

Interformetry

Polarography

Which of the following statements about anhydrous aluminium chloride is correct.

Choose an answer

It exist as AlCl3 molecules

It is not easily hydrolysed

It sublimes at 100 ^oC under vacuum

Boron does not form B³⁺ ions

In a one -component system the maximum number of phase that can consist in equilibrium is.

Choose an answer

1

2

3

4

Used in producing intense light in cinematography

Choose an answer

Xenon

Krypton

Radon

Helium

The rusting of iron is catalysed by which of the following.

Choose an answer

Fe

O2

Zn

H+

Which of the following radical is a member of VI group.

Choose an answer

Mg²⁺

Na+

K+

NH₄⁺

All above

Which of the following potassium fertilizers are more useful for horticultural crops tobacco and potatatoes.

Choose an answer

KNO3

KCl

HNO3

H2SO4

Helium is used in weather balloons and airships instead of H2 becuse it is.

Choose an answer

Lighter than hydrogen

Incombustible

More abundant than hydrogen

Radiactive

The presence of which of the following in drinking water is responsible for mottling of teach.

Choose an answer

Mercury

Iodine

Chlorine

Flourine

Main constituent of all inorganic matter

Choose an answer

Carbon

Silicon

Tin

Lead

The halide which is inert to water is

Choose an answer

PCl5

SiCl4

BCl3

SF3

Which of the following ions is smallest in size.

Choose an answer

F-

Cl-

I-

Br-

The alpha iron will become paramagnetic at temperature above

Choose an answer

770 C

550 C

660 C

440 C

The value of Kw increase with temperature because the ionization of water.

Choose an answer

Positive

Negative

Endothermic

Exothermic

The electrical conductivity of a nano tube is __________ times that of copper.

Choose an answer

10

100

1000

1/100

Which parameter of a chemical reaction will change with the use of a catalyst.

Choose an answer

Delta F, change in free energy

Delta S, change in entropy

Delta E , change in internal energy

K, the rate constant

Which of the following substance is most abundant of all components of atmospheric air.

Choose an answer

O2

N2

CO2

A2

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