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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Nylon 6,6 is a condensation polymer of:
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Phthalic acid and hexa ethylene diamine
adipic acid and hexaethylene diamine
phthalic acid and glycerol
phthalic acid and glycerol
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Question # 2
In the reaction A2 (g) + 4B2 (g) <-----------> 2AB4 (g) such that ∆H < 0, the formation of AB4(g) will be favoured at
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Low temperature and high pressure
Low temperature and low pressure
High temperature and low pressure
High temperature and high pressure
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Question # 3
Acetaldchyde and ketone form addition product with
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Phenyl hydrazine
Hydroxylamine
Hydrazine
hydrogen cyanide
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Question # 4
Which is the correct order of boiling points
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structure of ice
solution of ethanol in water
solution o fNaCl in benzene
linking of helix protein molecule
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Question # 5
The boiling of water may be 120°C, when the external pressure is
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greater than 760 torr
less than 760 torr
equal to 760 torr
variable
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Question # 6
Which of following is NOT use the polyvinylacetate (PVA)
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An adhesive material
Binder for emulsion
Used as gramophone
None as these
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Question # 7
When calcium formate and calcium acetate are dry heated they form
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НCOOH
C2H5OH
CH3CHO
HCHO
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Question # 8
The system in which all the three axes are unequal and are at righ angle to each other is called
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cubic
hexagonal
orthorhombic
tetragonal
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Question # 9
Some substance are good conductors of electricity in both the solid and liquid states. These substance are generally:
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molecular solids
ionic substances
metallic substances
covalent network solids
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Question # 10
The reaction kinetics concerned with the
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Rate of reaction
Direction of reaction
Factor effecting rate of reaction
both a &b
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Question # 11
When purely alcoholic solution of sodium/potassiumhydroxide and halogenoalkanes are reacted an alkene is formed, what is the mechanism of reaction?
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Elimination
Debromination
Dehydration
Reduction
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Question # 12
Sodium is manufacture by the electrolysis of fused sodium chloride and not from an aqueous solution of sodium chloride because
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Sodium chloride does not ionize in the water solution
Sodium chloride is not soluble in water
Sodium deposited at the cathode may react with water to form sodium hydroxide
Electricity does not pass through aqueous NaCl
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Question # 13
A state function of the system which describes together the internal energy and the work done is called
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Enthaply
Internal energy
Work
Free energy
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Question # 14
Identification of a substance, determination of its structure and quantitative analysis of its composition are the aspects covered by
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Modern analytical physics
Mechanical chemistry
Biochemistry
Modern analytical chemistry
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Question # 15
The attraction that an atom exerts on a pair of electrons that are being shared with another atom for forming covalent bond is referred to as its
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Electron affinity
Electronegativity
Ionisation energy
Valency
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Question # 16
Preparation of vegetable ghee involves:
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Halogenation
Hydrogenation
Hydroxylation
Dehydrogenation
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Question # 17
The most reactive compound for electrophilic nitration will be
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Benzyl chloride
Benzoic acid
Nitrobenzene
Chlorobenzene
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Question # 18
In the atomic emission spectrum the lines which appear bright, appear dark in absorption spectrum because
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The radiations emitted in emission spectrum are absorbed in absorption spectrum
Atomic emission spectrum is continuous
Atomic absorption spectrum is continuous
Distance between the lines increases
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Question # 19
The ionic strength of a solution containing 0.1 mole/kg of KCl and 0.2 mole/kg of CuSO
4
is
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0.3
0.6
0.9
0.2
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Question # 20
When acetamide reacts with Br
2
and caustic soda, then we get
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Acetic acid
Bromoacetic acid
Methyl amine
Ethylamine
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Question # 21
The reactivity order of alkyl halides for a particular alkyl group is:
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F >Cl>Br>I
Cl>Br>F>l
l>Br>Cl>F
Br>l>Cl>F
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Question # 22
Alkanes are gases :
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C
1
-C
4
C
5
-C
10
C
11
-C
15
C
10
-C
20
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