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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
One of the following is not a biopolymer. Point out that one
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Lipid
Starch
Diamond
Protein
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Question # 2
Primary structure of proteins refers to
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Coiling and folding in form of specific structure
Number of amino acids in a chain
3d structure
Alpha and Beta sheets
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Question # 3
The cell which converts electrical energy to chemical energy is called
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Electrochemical cell
Voltaic cell
Galvanic cell
Down's cell
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Question # 4
The B.P. of compound is mostly raised by
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dipole-induced dipole interactions
london dispersion forces
intramolecular H-bonding
intermolecular H-bonding
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Question # 5
Which heavy metals do not have any safe limits
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As
Hg
Cr
All of these
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Question # 6
The heat of reaction depends upon
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Temperature of the reactants
Physical states of the reactants and the products
Both A) and B)
Path of the reaction and the temperature
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Question # 7
To prepare ethane by Wurtz synthesis the suitable alkyl halide is
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Ethyl iodide
any alkyl iodide
Ethyl chloride
Methyl bromide
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Question # 8
All of the following are non covalent except
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Hydrophobic interactions
Disulphide bond
Hydrogen bond
Electrostatic bond
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Question # 9
When enzyme fumarase is exposed to UV light, then
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Its activity is enhanced
It converts into Glucokinase
It is inactivated
None
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Question # 10
Sponification is the hydrolysis of fats or oil with an:
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alkali
base
enzyme
metallic ion
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Question # 11
Which of the following statements is incorrect about vitamins
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often function as coenzymes
molecules contain at least one ring structure
are often synthesized by the body
are polyfunctional compounds
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Question # 12
Sulphonation of benzoic acid produces mainly
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o-Sulphobenzoic acid
m-sulohobenzoic acid
p-Sulphobenzoic acid
o-and p-Sulphobenzoic acid
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Question # 13
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Small change in concentration of product
Small time internal
Co-efficient of the reactant
Co-efficient of the product
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Question # 14
Determination of atomic masses and invention of system of writing symbols was made by:
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J. Berzelius
Democritus
Dalton
None of above
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Question # 15
The essential component of organic compound is
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O
C
P
N
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Question # 16
Units of Kw are
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Mole dm
-3
Mole
2
dm
-3
Mole
2
dm
-6
Mole
2
dm
-3
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Question # 17
Alcohols react with carboxylic acid to produce the class of compounds known as
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Grignard's reagent
Esters
Amides
None of these
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Question # 18
The weight of pure NaOH required to prepare 250 cm
3
of 0.1 N solution is
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4 g
1 g
2 g
5 g
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Question # 19
1.1 mol of A is mixed with 2.2 mol of B and the mixture is kept in on litre flask till the equilibrium is reached. At equilibrium, 0.2 mol of C is formed. If the equilibrium reaction is A+2B 2C+D, the value of equilibrium constant is
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0.002
0.004
0.001
0.003
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Question # 20
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Br
2(aq)
2, 4-dinitrophenylhydrazine
NaBH
Tollen's reagent
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Question # 21
Which statement is incorrect for and ideal solution
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The forces of attractions between solute and solvent molecules are same
There is no evolution or absorption of heat
Volume of the solution is less than sum of volumes of individual components
Vapour pressure of solution is directly proportional to the mole fraction of solvent
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Question # 22
Na
2
O is
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Acidic
Basic
Neutral
Amphoteric
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