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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
The reason of acid rain is:
Choose an answer
release of CO in excess by in complete combustion
excess release of NO
2
and SO
2
from burning of fossil fuels
Formation of NH
3
in excess form industry and coal gas
Formation of excess CO
2
due to combustion and respiration
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Question # 2
Amylose and Amylopectin are two fraction of starch which of them gives violet colour with I
2
Choose an answer
Amloase only
Amylopectin only
Both amlose & amylpectin
None of thses
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Question # 3
The scope of environmental chemistry is to study:
Choose an answer
Source of chemicals
Transportation of chemicals
Transportation of toxic chemical
All of these
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Question # 4
Starch is a polymer is of:
Choose an answer
sucrose
fructose
α-D-Glucose
lactose
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Question # 5
Helical structure of proteins is stabilized by
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Peptide bond
Dipeptide bond
Van der Wall's forces
Hydrogen bonding
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Question # 6
Monosacharides belong to the group:
Choose an answer
fats
lipids
carbhohydrates
proteins
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Question # 7
Reaction kinetics is important to discover the---under which reaction will proceed most economically:
Choose an answer
rate constant
Conditions
volume
equilibrium point
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Question # 8
The forces present between the ions and water molecules are called:
Choose an answer
dipole-dipole forces
dipole-induced dipole forces
London dispersion forces
ion-dipole forces
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Question # 9
Surfactants are organic compounds; used in detergents which reduce the
Choose an answer
viscosity of water
surface tension of water
boiling point of water
wetting ability of water
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Question # 10
betta-D-glucose is a monomer for
Choose an answer
Starch
Cellulose
Glycogen
Protein
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Question # 11
Which one the following gases is ideal at -200
°C?
Choose an answer
N
2
He
both
none
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Question # 12
Dehydrohalogenation of alkyl halides give
Choose an answer
Alkanes
Alkenes
Alkynes
Alkdehyde
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Question # 13
A transition metal complex can be recognized by various terms. Which is not the proper term
Choose an answer
Central metal ion
Coordination number
Ligand
Geometry of complex
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Question # 14
If a salt bridge is removed between the two half cells, the voltage
Choose an answer
Drops to zero
Does not change
Increases gradually
Increases rapidly
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Question # 15
Which of the following is not an air
Choose an answer
N
2
N
2
O
NO
CO
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Question # 16
The natural fertilizers consist of
Choose an answer
Plants
Animals
Both plants and animals
Microorganisms
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Question # 17
Which one of the following substance is no used as drying agent in desiccators
Choose an answer
Silica gel
CaCl
2
Phosphorous
NaCL(50%)
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Question # 18
Which of the following mixture of liquids show negative deviation form Raults law
Choose an answer
Ethyl alcohol and ether
HCI and water
Phenol- water
Chlorobenene-bromobenene
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Question # 19
Reaction of Grignard's reagent with ketones gives: Reaction of Grignard's reagent with formaldehyde gives:
Choose an answer
Pri-alcohol
Sec-Alcohol
Ter-alcohol
Carboxylic
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Question # 20
The bond order O
2
molecule is
Choose an answer
1
2
3
Zero
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Question # 21
At present cement plants in Pakistan are:
Choose an answer
Ten
Twenty Two
Four
Twenty Four
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Question # 22
The order of decreasing ease of reaction with ammonia is
Choose an answer
Anhydrides, esters, ethers
Anhydrides, ethers, esters
Ethers, anhydrides, esters
Esters, ethers, anhydrides
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