Question # 1

Which of the following is NOT a hardware requirement for die casting.

Choose an answer

Water cooled metal cavities

Machined metal holding blocks

Ejection mechanism

Metal mold

Which of the following substance acts as gaseous pollutant.

Choose an answer

NO

NO2

CO

SO2

All above

Which of the following species is not a basic radical.

Choose an answer

Ag+

Cl-

Ba2+

K+

Pi bond is formed

Choose an answer

By the overlapping of atomic orbitals on internuclear axis

By transference of electrons

By sidewise overlapping to half filled p orbitals

By overlapping of s-orbitals with p orbitals

Which of the following is the most abundant alkaline earth metal.

Choose an answer

Be

Mg

Ca

Sr

In proper rotation (Cn) an object is rotated through an angle of.

Choose an answer

a/n radians

2n/n radians

3n/n radians

4n/n radians

The most reactive alkali metal among the following is

Choose an answer

Li

Na

Cs

Rb

Which of the following does not represent Lewis acid.

Choose an answer

ZnCl2

FeCl2

BF3

Bul4

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

Choose an answer

F-

O2-

Na+

Ca2+

How many stereoisomers are possible for CH3CH = CHCHCH(Br) CH3

Choose an answer

2- geometrical isomers

2- optical isomers

2- geometricla nad 2- optical isomers

2- geometrical and 1 optical isomers

The maximum number of electrons in s,p,d and f sub shells are.

Choose an answer

2 in each

2, 6, 10, 18

2,6 ,10,14

5 in each

The structure of SO2

Choose an answer

Linear

Angular

V-shaped

Planner

Identify a dye which was ot originally obtained from plant source.

Choose an answer

Alizarin

Tyrian purple

Indigotin

Quercitrin

The concentration of OH- ions in a certain household ammonia solution is 0.0025. This ammonia solution is.

Choose an answer

Basic

Acidic

Neutral

None of above

The formula of borax glass is.

Choose an answer

Na2B4O7 10H2O

Na2B4O7 5H2O

Na B4 O7

None of above

Which of the following is not related to crystallography .

Choose an answer

Law of rational indices

Law of anymmetry

Law of constancy of interfacial angel

Henry's law

Particulate from soil and mineral primarily contains

Choose an answer

Sodium compounds

Calcium compounds

Silicon compounds

Calcium, aluminum and silicon compounds

Which of the following statements is not correct regarding electromagnetic spectra?

Choose an answer

The frequency of microwave is less than uv

The velocity of X-rays is more than uv

Cosmic rays have shorter wave length than radio waves.

The frequency of uv is greater than visible rays.

CCl4 has zero dipole moment because of.

Choose an answer

Planar structure

Tetrahedral structure

Similar size of C and Cl atoms

Similar electrons affinity of C and Cl

Which of the following elements is most electropositive.

Choose an answer

C

N

O

Be

The IUPAC name of ethylene oxide is.

Choose an answer

Epoxy methane

Oxcethene

Methoxymethane

All of the above

The liquor is screened to exclude ________ material

Choose an answer

Fibrous

Polymers

Maltose

Sucrose

The smog is essentially caused by the presence of.

Choose an answer

O3 and N2

O2 and N2

Oxides of sulphur and nitrogen

O2 and O3

Which of the following is major sink for carbo monoxide.

Choose an answer

Water

Soil

Animal respiration

Salts dissolved in ocean water

Group VA of the periodic table consist of elements.

Choose an answer

3

4

5

6

Al2Cl6 is an example of

Choose an answer

Ionic bond

Covalent bond

Co ordinate bond

Metallic bond

Which of the following process is used for the conversion of matte is to nickel.

Choose an answer

Orford process

Mond's process

Electrolytio process

All

Which of the following factors does not effect the rate of the reaction.

Choose an answer

Pressure

Temperature

Concentration

Catalyst

All of the above

The process of transfer of genetic message from DNA to m-RNA is known as

Choose an answer

Refplication

Translation

Transcription

Transference

The specific gravity of H2SO4 is

Choose an answer

1.37

1.84

1.17

1.57

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