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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Tertiary aleohols producewith acidified KMno,
Choose an answer
Ketones
Aldehydes
Malonic acid
Alkene
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Question # 2
Main cause of reducing map is:
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Combustion of coal
NO and NO
2
Un-burnt hydrocarbons
All of these
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Question # 3
Ammonium nitrate fertilizer is not used for which crop:
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cotton
wheat
sugar cane
paddy rice
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Question # 4
A molecule of polysacharide on hydrolysis produces __________of molecules of monosacharide,
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2 - 10
3
>10
2
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Question # 5
Fungicides re the pesticides which:
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kill plants
kill herbs
kill insects
control the growth of fungus
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Question # 6
When ethyl magnesium bromide is treated with carbon dioxide and the product hydrolyzed we get
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formic acid
propionic acid
oxalic acid
acetic acid
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Question # 7
Higher the surface area available for reaction
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slower the reaction
faster the reaction
constant the reaction
lower the Ea
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Question # 8
Equal masses of methane and oxygen are mixed in an empty container at 25∘C.
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1/3
8/9
1/9
16/17
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Question # 9
The ratio of close packed atoms to tetrahedral holes in cubic close packing is
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1 : 1
1 : 2
1 : 3
2 : 1
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Question # 10
UV rays inactivate enzymes because they
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change sequence of amino acids of enzymes
They add prosthetic group to them
They increase their specificity
affect structure of enzymes
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Question # 11
On ascending the electrochemical series strength as reducing agent
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Increases
Decreases
Remains same
not determinable
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Question # 12
An orbital can accommodate maximum two electrons with opposite spins according to
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Heisenberg's principle
Aufbau principle
Hund's srule
Pauli exclusion principle
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Question # 13
Effective magnetic moment of Sc
3+
ion is
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1.73
0
5.92
2.83
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Question # 14
Covalent compound s mostly exist in the form of:
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Protons
Atoms
Neutrons
Molecules
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Question # 15
Acetamide is
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Highly acidic
Highly basic
Neutral
amphoteric
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Question # 16
In the manufacture of iron from haematitie,limestone is added to act as
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Flux
A reducing agent
Slag
An oxidizing agent
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Question # 17
The IUPAC name fo CH
3
COCH (CH
3
)
2
is
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4-Methylisopropyl ketone
3-Methyl-2 butanone
Isopropylmethyl ketone
2 - Methyl- 2 butanone
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Question # 18
Each of the following is true of white and red phosphours except that they
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Are both soluble in CS
2
Can be oxidized by heating in air
Consist of the same kind of atoms
Can be converted into one another
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Question # 19
Alcohol can be prepared from Grignard's reagent with an aldehyde: If we start with formaldehyde the product alcohol with be
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Primary
Secondary
Territory
Aromatic
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Question # 20
Corrundam is ore of:
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Li
Be
B
Al
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Question # 21
The number of subatomic particles in atoms sidcovered is more than:
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110
100
125
90
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Question # 22
Some of the elements of a period show similar behavior with the elements of next group in next period this is called
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Vertical relationship
Oblique relationship
Diagonal relationship
None
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