Question # 1

The pH Value 4.2 is of

Choose an answer

Vinegar

Lemons

Oranges

Tomatoes

In the metallurgy of iron, when limestone is added to the blast furnaced, the calcium ion ends up in

Choose an answer

Slag

Gangue

Metallic calcium

Calcium carbonate

The role of the mineral cryolite Na2AlF6 in the Hall process for aluminum production is.

Choose an answer

It is the source of aluminum

it is a chemical reducing agent

It forms a slag to remove impuriteis

In the molten state, it is a solvent for alumina Al2O3

Which of the following statements is not correct with respect to limitations of flame photometry.

Choose an answer

Low energy of the exciting source

Liquid samples are generally used

Can be employed for direct detection halides or inert gases

It does not provide informatin about the molecular forms of metals.

Which of the following hydrocarbon cannot be obtained on reacting chloomethane with sodium metal in the presence of dry ether.

Choose an answer

C4 H10

C2H6

C2H4

C3H8

Which one of following is non polar

Choose an answer

CH2Cl2

CCl4

CHCl3

CH3Cl

Xe reacts directly with

Choose an answer

O2

Cl2

F2

Br2

Which of the following allows charge transfer through the solution but prevents mixing of the solution.

Choose an answer

Anode

Cathode

Electrode cell

Salt bridge

Ca H2 on reaction with water liberates

Choose an answer

H2

O2

Botha of these

None of these

Which two atoms of hydrogen combine to form a molecule of hydrogen gas. the energy of the hydrogen molecule is.

Choose an answer

Higher than that of separate H atoms

Equal to that of separate H atoms

Lower than that of separate H atoms

Sometimes lower and sometimes higher than that of separate H.

Which one of the following statements if false with respect to CFT.

Choose an answer

In an octahederal crystal field. the d electron on a metal ion occupy the ex of orbitals before they occupy the t98 not of orbitals.

Diamagnetic metal ions cannot have an odd number of electrons

Low spin complexes can be paramagnetic

Low spin complexes contain strong field ligands.

Group IV A consist of elements.

Choose an answer

3

4

5

6

Which of the following elements has the highest third ionization energy.

Choose an answer

Sodium

Magnesium

Aluminum

Silicon

Which of the following statement is not related with nitric oxide.

Choose an answer

It is a colorless and odourless gas

It is produced largely by fuel combustion

It is a brown pungent gas

It is oxidized to NO2

Ca2+ is isolelectronic with.

Choose an answer

Mg2+

Kr

Ar

Na+

Lactic acid is a molecule which shows

Choose an answer

Epimersim

Tautomerism

Opical isomerism

Metamerism

Which of the following represents the correct order of ionic radii

Choose an answer

La+ < Na+ < K+ < Rb+

Li+ > Na + > K+ >Rb+

Li = Na + = K+ = Rb+

Rb +> Na+> K+ > Li+

When steam is passed over red bot coke The product formed is

Choose an answer

Hydrogen and carbon dioxide

Mixture of hydrogen and carbon monoxide

Mixture of hydrogen and oxygen

Heavy hydrogen

The most harmful components of incomplete combination are generally groped as particulate polyclic matter organic (PPOM) These materials are derivatives of .

Choose an answer

Benzene

Naphthalene

Benz a pyrene

None of the above

Which among the following is insoluble in water.

Choose an answer

LiOH

KOH

NaOH

RbOH

Enfleurage process is used to extract the essential oils from

Choose an answer

Back of plant

Seeds of plant

Leaves of plant

Flowers of plant

According to R, S system the correct order of priority of the following groups is .

Choose an answer

-CH2OH > - CHO > ----- COOH

-COOH > ------CHO > ------CH2OH

---- CH2OH -----> - COOH > -------CHO

--- COOH > - CH2OH >----- CHO

Which of the following is a component of soap.

Choose an answer

Sodium sulphate

Sodium stearate

Sodium chloride

Sodium bromide

1 meter = ___________ nm

Choose an answer

10⁹

10^-9

10¹⁰

10^-10

The sum of pH and pOH is aqueous solution is equal to.

Choose an answer

14

7

zero

pKw

Elements in which differentiating electron enters the (n-1) the d-orbitals of the (n-1) the main shell are called elements.

Choose an answer

s- block

p-block

d-block

f-block

Which of the following is not a physical test.

Choose an answer

Colour test

Flame test

Beed test

Wet test

The rate at which a substance reacts depends on its.

Choose an answer

Molecular mass

Active mass

Equivalent mass

Molar mass

Which of the following is the best indicator for titration of CH3COH with NaOH

Choose an answer

Methyl orange

Methyl red

Phenophthalein

Eosin

Estimation of nitrogen in proteins is generally arrived out by the method.

Choose an answer

Duma's method

Van Slyke method

Kjeldahl's method

Carius method

When orthoboric acid is heated strongly it gives.

Choose an answer

B2O3

H2B3O7

HBO2

B

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