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PPSC Chemistry Full Book Test MCQs With Answers
Question # 1
Polyethylene Glycols are used in the preparation of which tye of detergetns.
Choose an answer
Cationic detergents
Anionic detergents
Non ionic detergent soaps
None of above
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Question # 2
Which of the following generally increases on going from top to bottom in a group.
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Metallic charcter
Electronegativity
Oxidising behaviour
Raducing behaviour
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Question # 3
Chlorine gas acts as a bleaching agent only in presence of.
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dry air
Moisture
Sunlight
Pure oxygen
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Question # 4
When of the following steps is involved in structure determination of an organic compound.
Choose an answer
Purification of compund.
Qualitative and quantitative analysis of elements present
Determination of molar mass
All above steps
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Question # 5
The common temperature detecting device in DTA are.
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Thermocouples
Thermopiles
Thermistore
All
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Question # 6
Which of the following compounds has highest dipole moment.
Choose an answer
Dichloromethane
Chloroform
Chloromathane
All above
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Question # 7
A molecule the cannot be susperimposed on its mirror image is said to exhibit which of the following.
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Geometrical isomerism
Optical isomerism
Linkage isomerism
Reactive isomerism
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Question # 8
Which of the following agrochemical acts as pollutant.
Choose an answer
Fertilizers
Weedicides
Herbicides
All above
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Question # 9
How many oxygen atoms lined up in a now would fit in a one nanometer speace.
Choose an answer
None an oxygen atoms is bigger than 1 nm
One
Seven
None of the above
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Question # 10
A system is said to be in the colloidal state if the particle size of the dispersed phase ranges from
Choose an answer
o
I to 10 A
10 to 10000 A
10 to 100 A
1000 to 10000 A
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Question # 11
Which of the following bonds will be non polar.
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N - H
O - H
C - H
C l - Cl
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Question # 12
The most electronegative element of the third period is.
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F
P
Br
Cl
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Question # 13
Which of the following substance is not present in acid rain.
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Sulphuric acid
Nitric acid
Acetic acid
Sulphurous acid
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Question # 14
The denationalization involving C - H sigma bond electrons is known as .
Choose an answer
Conjugation
Hyperconjugation
Mesomerism
Resonance
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Question # 15
The percentage of nitrogen in ammonia is _______________%
Choose an answer
32
82
25
55
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Question # 16
Treatment of phenol with cold dilute nitric acid gives.
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Only o-nitro phenol
Only p-nitro phenol
2,4,6 -Teinitro phenol
Mixture of o-and p-nitro phenol
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Question # 17
The contact process is mainly used when acid is required for the manufactures of.
Choose an answer
Explosives
Fine chemicals
Lead accumulators
All above
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Question # 18
Potassium crystallizes in a body centered lattice. Hence, the coordination number of potassium in potassium metal is.
Choose an answer
4
6
8
12
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Question # 19
Which of the following is not a biodegradable polymer.
Choose an answer
Protein
PVC
Cellulose
Nucleic acid
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Question # 20
The types of coordinate compounds.
Choose an answer
Labila
Inert
Both A and B
None of above
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Question # 21
The correct order of increasing polar character is.
Choose an answer
H2O < NHE < H2S < HF
H2S < NH3 < H2O < HF
NHE < H2O < HF < H2O
HF < H2O < NH3 < H2S
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Question # 22
Which of the following salt is colourless.
Choose an answer
Zn salt
Co salt
Ni salt
Mn salt
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Question # 23
In which of the following group, each member given a positive iodoform test.
Choose an answer
Methanol, ethanol, propanone
Ethanol, isopropyl alcohol, methanol
Ethanol, ethanal, isopropyl alcohol
Propanal 2-propanol, propanone
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Question # 24
The pH of 0.01 N NaOH is.
Choose an answer
12
13
14
11
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Question # 25
Which of the following is class of nanorods
Choose an answer
metals
alloys
Metal oxide and Metal sulphite
All of the above
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Question # 26
The most important problem regarding nano chemistry
Choose an answer
Elucidation of relationship between also and chemical reactivity of particle
Determination of size of particle
Determination of reactivity of particle
Determination of physical properties of nano particles.
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Question # 27
The internal resistance to flow possessed by a liquid is called its.
Choose an answer
Fluidity
Viscosity
Surface tension
Turbidity
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Question # 28
Wlhich of the following can act as a protective colloid
Choose an answer
Gelatin
Silica gel
Oil in water emulsion
All three
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Question # 29
Steel that are used for axles, gears, and similar parts requiring medium to high and strength are known as.
Choose an answer
Medium carbon steel
Low carbon steel
Very high carbon
High carbon steel
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Question # 30
Carbon tetra chloried has no net dipole moment because of.
Choose an answer
Its planar strcture.
Its regular tetrahedral structures.
Similar sizes of carbon and chlorine atoms
Similar electron affinities of carbon and chlorine.
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Question # 31
Naphthalene balls are obtained from
Choose an answer
Carbon
Coke
Coal Tar
All of above
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