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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Nitrogen percentage in atmosphere is:
Choose an answer
76%
77%
78%
79%
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Question # 2
Chemical equilibrium involving reactants and products in more than one phase is called:
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Homogeneous
Heterogeneous
Dynamic
Static
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Question # 3
Which of the following has isomorphous structure with MgO
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NaF
S
Sn
N
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Question # 4
Graham s law refers to
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Boiling point of gases
Gas compression problems
Gaseous diffusion
Volume changes of gases due to change in temperature
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Question # 5
Proxy acetyl nitrate (PAN) is an irritant to human beings and it affect
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Nose
Stomach
Eyes
Ears
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Question # 6
SO
2
produced by volcanoes is about
Choose an answer
75%
67%
69%
70%
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Question # 7
In which one of the following does the central atom not possess an 'octet' in its outer shell?
Choose an answer
BH
3
CH
4
NH
3
H
2
O
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Question # 8
Type of polymer formed by the polymerization of two monomers is:
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homopolymer
copolymer
ter polymer
All of these
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Question # 9
At higher temperature isotherm moves away from both the axes because of increase in
Choose an answer
Pressure
Volume
Number of moles
All
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Question # 10
Cellulose is the polymer of
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α-D-glucose
β-D-glucose
Fructose
None
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Question # 11
Which one among the following is not a natural polymer?
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protein
cellulose
nylon
nucleic acid
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Question # 12
The spectrum of He is expected to be similar to that of
Choose an answer
H
Na
He
+
Li
+
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Question # 13
BOD
is the oxygen demand with in days(s):
Choose an answer
Four
Two
Three
Five
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Question # 14
The number of elements in the 4th periods of periodic table is
Choose an answer
8
10
18
32
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Question # 15
An organic compound 'A' has the molecular formula C
3
H
6
O, it undergoes iodoform test. When saturated with HCl it gives 'B' of molecular formula C
9
H
14
O. A and B, respectively are
Choose an answer
Propanal and mesitylene
Propanone and mesityl oxide
Propanone and 2, 6-dimethyl-2,5-heptadien-4-one
Propanone and mesitylene oxide
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Question # 16
Any substance under going physical or chemical change is said to be
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Surrounding
System
Losphere
Lithosphere
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Question # 17
Which of the following is fully fluorinated polymer?
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Neoprene
Teflon
Thiokol
PVC
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Question # 18
In an ooctahedral crystal field splitting, the number of orbitals pushed down in energy is
Choose an answer
3
2
5
Zero
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Question # 19
Which compound contains - OH in their molecule
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Alcohol
Phenol
Alcohol and phenol
Ether
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Question # 20
Purine derivative among the following bases is
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Thymine
Uracil
Guanine
Cytosine
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Question # 21
Which statement explains the observation that magnesium hydroxide dissolve in aqueous ammonium chloride, but not in aqueous sodium chloride
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The ionic radius of the NH
4
+
ion is similar to that of Mg
2+
but not that of Na
+
NH
4
Cl dissociates less fully than NaCl
The ions Na
+
and Mg
2+
are isoelectronic (have the same number of electrons)
The ion NH
+
4
acts as an acid
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Question # 22
Acetic Acid reacts with PCl
5
giving:
Choose an answer
Acetamid
Acetyl chloride
Alcohol
ether
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