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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Which one of the following statements about positive ions is incorrect?
Choose an answer
they are also known as cations
they are formed when electrons are removed from atoms
they are larger than the atom from which hay were formed
they are smaller than the atom from which they were formed
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Question # 2
CO2 and SO2 are both triatomic molecules, but heat of vaporization of SO2 is greater than that of CO2. This is due to
Choose an answer
greater electronegative character of sulphur
greater size of SO2 molecule
SO2 is polar and CO2 is non-polar
SO2 is more acidic in nature than CO2
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Question # 3
Which is the following is true about galvanic cell:
Choose an answer
Reduction occurs at cathode
Reduction occurs at anode
Anode is negatively charged
Chathode is positively charged
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Question # 4
On electrophoresis for plasma proteins using buffer of pH 8.6
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The proteins are neutral
The proteins carry negative charge
The proteins carry positive charge
The proteins are easily precipitated
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Question # 5
Which one of the following will behave least like an ideal gas at high temperature and low pressure?
Choose an answer
hydrogen fluoride
helium
oxygen
carbon dioxide
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Question # 6
In esterification, the OH of carboxylic acid is replaced by
Choose an answer
OR+
R+
OR
R
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Question # 7
Chloroform (CHCl3) is?
Choose an answer
Primary alkyl halide
Secondary alkyl halide
Tertiary alkyl halide
a liquid
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Question # 8
The conversion of molecules of A to B follows a second order kineties. Doubling the concentration of A will inerease the rate of formation of B by a factor of
Choose an answer
2
4
1/2
1/4
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Question # 9
Crystal lattice with alternate +ve and -ve ions has radius ratio of 0.524.Its coordination number is
Choose an answer
4
3
6
12
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Question # 10
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 # 11
Vegetable oil are
Choose an answer
unsaturated fatty acids
glycerides of unsaturated fatty acids
glycerides of saturated fatty acids
essential oil obtained from plants
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Question # 12
Formaldehyde is used to make
Choose an answer
Plastics
Medicine
Antiseptic
All of these
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Question # 13
The heat of formation of graphite and P(white) is ______ KJ/mole
Choose an answer
0.00
-273.0
+8.7
813.99
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Question # 14
All the following decompose easily on heating to give oxygen except
Choose an answer
Lead nitrate
Potassium chlorate
Mercuric oxide
Manganese dioxide
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Question # 15
The bond order of individual C - C bond is benzene is
Choose an answer
One
Two
Between one and two
One and two alternately
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Question # 16
A solution sucrose is 34.2%. The volume of solution containing one mole of solute :
Choose an answer
342
cm
3
1000
cm
3
500
cm
3
242
cm
3
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Question # 17
Coordination number of Pt in [PtCI(NO
2
) (NH
3
)
4
]
2+
is
Choose an answer
2-
4
1
6
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Question # 18
The empirical formula of benzene is determined by
Choose an answer
IR spectra
U.V
Elemental analysis
NMR spectra
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Question # 19
An ion bearing positive charge is called:
Choose an answer
Cation
Positron
Anion
None of above
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Question # 20
In which of these processes are smell organic molecules made into macromolecules?
Choose an answer
The cracking of petroleum fractions
The fractional distillation of crude oil
The polymerization of ethane
The hydrolysis of proteins
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Question # 21
What is going to replace the petroleum?
Choose an answer
Silica
Silicates
Silicones
Silicon
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Question # 22
Phenol gives ---------- Colour with neutral FeCl
3
solution
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Violet
Green
Red
Blue
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