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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Helical structure of protein is stabilized by
Choose an answer
Peptide bond
Dipeptide bond
Van der wall's forces
Hydrogen bonding
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Question # 2
The bonding which occurs among polar covalent molecules containing H and one of the small electronegative element such as O, F or N is called
Choose an answer
bridge bonding
metallic bonding
hydrogen bonding
Ionic bonding
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Question # 3
Solid waster of the city is disposed off by dumping in a landfill. Which of the following gas is produced in the landfill
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Oxygen
Chlorine
Hydrogen sulphide
Hydrogen chloride gas
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Question # 4
Temporary hardness can be removed by adding
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Lime
Carbon
Oxygen
Slaked lime
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Question # 5
A teacher told his student that air is a mixture. This is due to the reason that suddenly a student raised his hand and said:
Choose an answer
it has different properties from its constituents
oxygen can be removed from it
it is colourless
its composition is different at different altitudes.
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Question # 6
Leather tanneries use big auantities of:
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Cr Vi salts
Cr III salts
Mn-salts
Pb-salts
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Question # 7
Fourth structure of protein structure refers to
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Proteins formed of more than one monomer
Myoglobin is an example
Depends on covalent bonds
None of these
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Question # 8
An example of regulatory protein is
Choose an answer
nucleoprotein
hemoglobin
lactoglobulin
thyroxine
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Question # 9
The most complex strueture a single polypetide can assume is
Choose an answer
1° structure
2°structure
3° structure
4° structure
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Question # 10
One degree on Celsius scale is ______ time greater then Fahrenheit scale
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9/5
5/9
6/5
5/6
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Question # 11
What s the boling point of H2O at the peak of Mount Everest?
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101 C°
69°C
100 C°
98° C
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Question # 12
A polymer may be
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Homopolemer
Co-polymer
Terpolymer
All of these
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Question # 13
The heat contents of all the elements in their standard states are taken to be
Choose an answer
1
2
0
None
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Question # 14
The order of reactivity of halogen acids towards alkenes
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HCl > HBr > Hl
HBr > HCl > HI
HCl > HBr
HI > HBr > HCl
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Question # 15
Wohler synthesized first of all the organic compound:
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Carbohydrates
Urea
Aniline
Toluene
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Question # 16
The state of hybridization of carbon atom in methane is:
Choose an answer
sp
3
sp
2
sp
dsp
2
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Question # 17
denaturing of alcohol is done by adding methanol in ethanol:
Choose an answer
10%
20%
30%
40%
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Question # 18
The state of equilibrium refers to
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State of rest
Dynamic state
Stationary state
State of inertness
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Question # 19
Aldehydes can be distinguished from ketones by using
Choose an answer
Schiff's reagent
Conc. H
2
SO
4
Anhy. ZnCl
2
Resorcinol
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Question # 20
Which gas is used for welding purposes
Choose an answer
Butane
Nitrogen
Methane
Acetylene
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Question # 21
Which is more active ?
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Alkanes
Alkenes
Alkynes
Benzene
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Question # 22
Poly hydroxyl compounds of aldehyde and ketones are:
Choose an answer
Carbohydrates
Proteins
Fats
Lipids
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