Question # 1

All halogens exist as covalent molecules.

Choose an answer

Monoatomic

Daitomic

Triatonic

Tetra atomic

Detergents are known to pollute revers and water ways. However, detergents can be made biodegradable and pollution free by taking.

Choose an answer

cyclic hydrocarbon chain

Shorter hydrocarbon chain

Unbranched hydrocarbon chain

Benzenoid hydrocarbons

Environmental pollution refers to.

Choose an answer

Peeling of top soil

Dissipation of energy

Release of toxic materials in environment

None of the above

Proper proportioning of concrete, ensures

Choose an answer

Resistance to water

Desired durability

Water tightens of the structure.

All

The pKa of acetic acid is 4.74 which implies that.

Choose an answer

pH of 1N solution is 4.74

At pH 4.74 the dissociation of acetic acid is maximum

At pH 4.74 half of the acetic acid molecules are dissociated in the solution.

At pH 4.74 the dissociation of acetic acid is minimum.

Which of the following statements correct regarding copper.

Choose an answer

It is used in electroplating

Its salts are used as insecticides

Its salts are used as coloring materials

All are correct

Which of the following pentahalides is not formed.

Choose an answer

NF5

PF5

AsF5

BiF5

Glucose and fructose react with which of the following reagent to give same product.

Choose an answer

Tollen's reagent

Phenyl hydrazine

Hydroxyl amine

All of these

To obtain cement dry powder, lime stones and shales or their slurry, is burnt in a rotary kiln at a temeperature between

Choose an answer

1100 ^o and 1200 ^oC

1200 ^o and 1300 ^oC

1400 ^o and 1500 ^oC

1900^o and 2000 ^oC

Which of the following elements does not impart any characteristic colour to the flame.

Choose an answer

Ca

Mg

Ba

Sr

Which of the following is not a property of Ni.

Choose an answer

it is a soft silvery white metal

It is malleable and ductile

It is highly magnetic

It has high electrical and thermal conductivities

Phosphoric acid is the most important of the phosphorus oxy acids. Industrially phosphoric acid is prepared by.

Choose an answer

The Ostwald process

The Haber's process

The reaction of phosphate rock with sulphuric acid

The reaction P4O10 with water.

Reacts violently with water

Choose an answer

AlH3

AlCl3

Lia IH4

Al2Cl6

How much amount of NaOH is required to prepare 100 mL of 1 N solution.

Choose an answer

80 g

4 g

40 g

zero

Which of the following contains isoprene unite.

Choose an answer

Natural rubber

Nylong -6,6

Polyethylene

Decron

Inductive effect can be used to explain

Choose an answer

Dipole moment of chemical bonds

Strength of acids

Strength of bases

All above

Beillstein test is used for.

Choose an answer

Cl

N2

CO2

Na

The rising world temperature will have serious effect on.

Choose an answer

Agriculture

Animal production

Human being

All above

Which of the following substance is not weak electrolyte.

Choose an answer

CH3COOH

NH4OH

Oxalic Acid

NaCl

The current voltage characteristics forms the basis of.

Choose an answer

Thermal analysis

Potentiometry

Polarography

Colorimetry

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

The commonly used catalyst in the manufacture of H2SO4

Choose an answer

Fe2O3 with a little CuO

v2O5

Platinized asbestos and MgSO4

All above

Which one of the following statements is not true.

Choose an answer

Transition metals form alloys

Transition metals form complexes

Zn, Cd and Hg are transition metals

K2[PtCl6] is a well known compound but corresponding nikel compound is not knonwn

The number of phases of mixtures of four gases enclosed in a container is

Choose an answer

1

4

4-1

zero

Which number of halogen family does not show positive oxidation state.

Choose an answer

Fluorine

Chlorine

Bromine

Iodine

Iso-osmotic solutions are those which have the same.

Choose an answer

Vapour pressure lowering

Osmotic pressure

Molality

Boiling point elevation

The element having electronic configuration 1s2, 2s2, 3s2, 3p3 is.

Choose an answer

Trivalent only

Tetravalent only

Trivalent and pentavalent

Pentavalent only

During the preparation of ethane by Kolbe's electrolytic method using inert electrodes the pH of the electrolyte.

Choose an answer

Increases progressively as the reaction proceeds

Decreases progressively as the reaction proceeds

Remains constant throughout the reaction

May decrease if the concentration of the electrolyte is not very high

Perdisulphuric acid is.

Choose an answer

Marshal acid

Caro acid

None of above

Any of above

Which of the following acids acts as acid waste from coal mines.

Choose an answer

HCl

HNO3

CH3COOH

H3PO4

Which of the following is strong adheaive.

Choose an answer

Epoxy resin

Melamine -formadehyde resin

Alkyd resins

Bakelite

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