Question # 1

Which of the following is not an alkali metal

Choose an answer

Rb

Sb

Cs

Fr

An element with atomic number 20 is placed in which period of the periodic table.

Choose an answer

1

2

3

4

Nitrobenzen can be prepared from benzene by using a mixture of conc. HNO3 and conc. H2SO4 In the nitrating mixture. HNO3 acts as a.

Choose an answer

Base

Acid

Oxidizing agent

Catalyst

What nickel alloy has high electrical and corrosion resistance and high strength at red heat temperature and contain 15 to 20% chromium.

Choose an answer

Alnico

Nichrome

Invar

None of above

The entropy of the universe

Choose an answer

Tends towards a maximum

Tend towards a maximum

Tends to be zero

Remains constatn

Which of the following will be most effective int he coagulntion of

Fe (OH)3 sol.

Choose an answer

NaCl

MgSO4

AlCl3

Mg3 (PO4)2

The first noble gas compound was

Choose an answer

XeO3

XeF4

XeF6

Xe +[PtF6]

Which of the following trihalides of nitrogen behaves as the weakest base.

Choose an answer

NF3

NCl3

NBr3

NI3

The number of electrons involved in bonding in Lewis structure of oxalate ion is

Choose an answer

20

14

22

18

In urea the amount of nitrogen is

Choose an answer

82.0%

46.0%

33.0%

21.0%

A stable molecule is a group of atoms held together by

Choose an answer

Chemical forces

Physical forces

Valence force

None of above

The electronic configuration of chromium is 4s1, 3d5, The elements tungsten (W) belongs to the same group and has atomic number 74.The configuration of its valence shell is.

Choose an answer

5s1, 4d5

6s1, 5d5

6s1, 5d6

6s1, 5d4

VBT does not edplain

Choose an answer

Absorption spectra

Color of transition metal ion

Heat of formation

All above

a-pinene hydrochloride on warming rearrangements to form bornyl chloride

Choose an answer

Pinacol pinacolone

hofmann

Wagner Meerwein

Wolf

H2SO4 is used

Choose an answer

In the preparation of aqua regia

In the purification of gold and silver

In the dental filling

None of above

IUPAC name of HCONH2 is.

Choose an answer

Methanamide

Methanoylamine

Ammoethanal

Formanide

Type of hybrid orbitals used by the chlroine atom in CIO2 is.

Choose an answer

sp2

sp3

sp

None of these

Which of the following statement is not true in case of catalytic reforming.

Choose an answer

High temperature results in loss of reformate yield

High naphthenic stock require high space velocity

Presence of water decrease the hydrocracking activity.

None of above

Not a Characteristic property of ceramic material

Choose an answer

High temperature stability

High mechanical strength

Low elongation

Low hardness

Smoke is a dispersion of

Choose an answer

Gas in gas

Gas in solid

Solid in gas

Liquid in gas

In the Lewis formula of which of the following species, the number of single double and dative bonds are equal.

Choose an answer

N2O3

HNO3

SO2

SOCl2

The reverse of photo chemical reaction is called.

Choose an answer

Phosphorescence

Chemiluminescence

Fluorescence

Photscnaitization

What is the ratio of stress to strain in a material loaded within its elastic ranger.

Choose an answer

Poisson’s ratio

Refractive index

Modulus of elasticity

None of above

Which of the following is diamagnetic

Choose an answer

O2

O2+

O2-

O2 ^2-

The instrument used for measuring fluorescence is known as.

Choose an answer

Fluorimeter

Potentiometer

Flame photometer

Mass spectrometer

Which of the following hydroxide is getatinous in nature.

Choose an answer

Fe(OH)3

Al(OH)3

Ca(OH)3

Cr (OH)3

Which of the following oxide formed in appreciable quantity in the atmosphere.

Choose an answer

NO

NO2

N2O

All above

White Phosphorus is kept under

Choose an answer

Cold water

Ammonia liquor

Ethanol

Kerosene

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 analytical technique is based on the refraction of radiation.

Choose an answer

Conductometry

Refractometry

Coulometry

Potentiaometry

Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is.

Choose an answer

4

6

8

12

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