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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
During oxidation process, oxidation number of an element
Choose an answer
Decreases
Increases
Remains constant
Both a and b
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Question # 2
The pH range of the acid rain is
Choose an answer
6.5 - 6
Less than 5
8 - 7.5
7 - 6.5
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Question # 3
Considering the physical properties of the gases, which of the following statements about particles of gas is not true. The particles
Choose an answer
orderly arranged
randomly moving
having wide spaces
causing pressure
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Question # 4
Which of the following is derived lipid
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Sterols
Vit D
Terpenes
All
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Question # 5
Neutralization of acid-base is
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Spontaneous
Exothermic
Non spontaneous
Both "a" and "c
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Question # 6
d-d transition cannot be shows by
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Cu+1
Sc+3
Zn+2
All
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Question # 7
Biochemical oxygen demand (BOD) is the capacity of organic matter in natural water to consume oxygen with in a period of:
Choose an answer
2 days
5 days
6 days
7 days
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Question # 8
Which one of following property is not true about alkali metals?
Choose an answer
Strongest bases due to their hydrides
Low ionization energy
Oxidation number more than +1
Form acidic oxides
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Question # 9
Alcohol is less acidie than phenol due to
Choose an answer
higher ka value
Instability of alkoxide ion
stability of carbocation
Stability of phenol
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Question # 10
At same temperature which substance has high kinetic energy:
Choose an answer
Liquid water
N
2
gas in a container
Solid piece of iron
Solution of alcohol and water
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Question # 11
Which type of motion is exhibited by gases?
Choose an answer
Vibrational
Transitional
Rotational
All of them
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Question # 12
Corrosion of iron can be prevented by coating the surface with
Choose an answer
Zn
Sn
Ni
Any of the above
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Question # 13
Macro-nutrients are required in quantities ranging from
Choose an answer
5 kg - 200 kg
2 kg - 100 kg
1 kg - 50 kg
10 kg - 100 kg
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Question # 14
The total number of possible values of magnetic quantum number for the value of l=3 is
Choose an answer
3
1
5
7
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Question # 15
During the formation of a chemical bond the potential energy of the system
Choose an answer
Decreases
Increases
Does not change
None of these
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Question # 16
Which of the following statements is correct?
Choose an answer
Phenol is less acidic than ethyl alcohol
Phenol is more acidic than ethanol
Phenol is more acidic than carbonic acid
Phenol is more acidic than CH
3
COOH
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Question # 17
Which of the following decolorized Br
2
-water
Choose an answer
Methane
Ethane
Ethene
Propane
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Question # 18
A solutiion of 0.5 mole camphor in 100 grmas chloroform (K
b
= 0.322) has rise in boiling point than that of chloroform by
Choose an answer
0.81°C
1.61°C
1.81°C
0.61°C
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Question # 19
Which of these polymers is an addition polymer?
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Nylon-6,6
Polystrene
Terylene
Epoxy resin
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Question # 20
Soil salinity can be measured by
Choose an answer
Calorimeter
Potometer
Porometer
Conducitvity meter
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Question # 21
Which one of the following statements about glucose and sucrose is incorrect?
Choose an answer
Both are soluble in water
Both are naturally occuring
Both are carbohydrates
Both are disaccharides
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Question # 22
The two half cells of a galvanic cell are connected by
Choose an answer
Ammeter
Salt bridge
Hydrogen electrode
Copper electrode
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