Question # 1

Which of the following statements not correct with the concept of Bronsted concept of acids and bases.

Choose an answer

An acid can donate a proton

A base can accept a proton

This concept has many bases that have OH- ions

This concept is more general

Which of the following iso -electronic ion would require least energy for the removal of electron.

Choose an answer

Ca2+

Cl-

Ar-

K+

Ionic compounds in general possess both

Choose an answer

High melting point and non -directional bonds

High melting points and low boiling poinits

Directional bonds and low boiling points

High solubility in polar and non -polar bonds.

According to Fajns rules, which one of following results in increased ionic nature of the covalent bond.

Choose an answer

Larger cation and smaller charges on anion

Larger cation and larger charge on anion

Smaller cation and smaller charge on anion

Smaller cation and larger charge on anion

Granulated sugar containing._____________

Choose an answer

Glucose

Fructose

Maltose

Sucrose

Perdisulphuric acid is.

Choose an answer

Marshal acid

Caro acid

None of above

Any of above

Which of the following anionic species is not separated by gravimetric analysis.

Choose an answer

Cl-

SO4

CH3COO-

PO4

Which of the following statement is not correct with respect to hydrolytic cycle.

Choose an answer

Water covers about 83% of the earth's surface

Water covers about 73% of the ear5th's surface.

It is the major constituent of the lithosphere

it is essential requirement of all the organisms

in the system of designating wrought aluminum alloys the letter F that follows the number indicates what condition of the alloy.

Choose an answer

As fabricated

Calcined

Annealed

Strain hardened

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.

According to the Langumir isotherm , when the pressure of the gas is very large, the adsorption.

Choose an answer

Is directly proportional to pressure

Is inversely proportional to pressure

Is directly proportional to the square of the pressure.

Is independent of pressure

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

Choose an answer

O2

N2

CO2

A2

Identify the incorrect statement regarding crystallization from the following.

Choose an answer

It is an important procedure for purifying solids

The impurities are removed by filtering the solution

Crystals are separated by filtration

In crystallization method, the solid is dissolved in a solvvent in which it is soluble at all temperature.

Among the elements A,B,C and D having atomic numbers 9,10,11, and 12 respectively, the correct order of ionization energies is.

Choose an answer

A > B > C >D

B > A > D > C

B > A > C > D

D > C > B > A

The ease of hydrohalogenation of alkyl halide with alcoholic KOH is.

Choose an answer

3^o > 2^o > 1^o

3^o < 2_o <1^o

3^o > 2^o < 1^o

3^o < 2 ^o > 1^o

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

Choose an answer

higher than that of the separate atoms

Equal to that of the separate atoms

Lower than that of the separate atoms

Sometimes lower and sometime higher.

Chlorine gas acts as a bleaching agent only in presence of.

Choose an answer

dry air

Moisture

Sunlight

Pure oxygen

The metallic character of group 14 elements

Choose an answer

Decreases from top to bottom

Increases from top to bottom

Does not change gradully

Has no significance

Which of the following is capable of shown g optical isomersm.

Choose an answer

CH3COCOOH

CH3CHOHCOOH

Botha a and b

All of these

In plant noise control, which of the following method is used for reducing noise

Choose an answer

Plant planning

Control at the source

Control of radiated noise

All above

In which polymerization branching of chain cannot be possible.

Choose an answer

Free radical

Cationic

Anionic

Anionic and Zieglar Natta

The volume of a given mass of gas at constant temperature varies inversely with the pressure. This is a statement of.

Choose an answer

Charlea's law

Avogadro's law

Boyle's law

Dalton 's law

The number of Glass products now manufactured is.

Choose an answer

25,000

75,000

50,000

All of these

Setting of plaster of Paris volves.

Choose an answer

Oxidation with atmospheric oxygen

Combination with atmosphere CO2

Dehydration

Hydration to yield another hydrate

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

Choose an answer

HCl

HNO3

CH3COOH

H3PO4

The extinction co efficient has the units.

Choose an answer

cm2 mol -1

cm3 mol-1

mol cm-3

mol cm-1

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

When two H atoms approach each other then forces operates.

Choose an answer

Attractive forces

Repulaive forces

Attractive and repulsive

None of above

Which of the following process is not involved in the purification of bauxite.

Choose an answer

Bayer's process

Serpek's process

Hall's process

Goldsmith's process

The colloidal solution of arsenic sulphide prefers to absorb

Choose an answer

NO3

K+

S2-

H+

The only oxidation state of alkali metals in their compounds is.

Choose an answer

+1

+2

-1

0

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