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Chemistry General Science Test Medium Mode MCQs With Answers
Question # 1
Naphthalene has two fused aromatic ring of carbon atom the molecular formula
Choose an answer
C10H8
C10H14
C10H10
C12H12
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Question # 2
The rigid rocky part of earth crust called lithosphere extends upto a depth of:
Choose an answer
10 km
100 km
1000 km
1500 km
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Question # 3
Naturally occurring isotopes of silver are
Choose an answer
,Two
, Four
, Forty seven
, sixteen
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Question # 4
Which of the following compounds is not known?
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SbCl
NCl3
Nl3
NCl5
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Question # 5
Monosacharide belong to the group
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Fats
Carbohydrates
Lipids
Proteins
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Question # 6
Ozone in stratosphere extends upto km:
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0-15 km
10-15 km
15-40 km
15-25 km
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Question # 7
Octyl acetate has the flavor of
Choose an answer
Orange
Pineapple
Banana
Apple
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Question # 8
Which compound shows the highest melting point
Choose an answer
water
Propanoic acid
Methanoic acid
Ethanoic acid
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Question # 9
Ozone layer is present in
Choose an answer
Troposphere
Stratosphere
Mesosphere
Ionosphere
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Question # 10
Liquids evaporate at every temperature. When the temperature becomes constant for a liquid, then:
Choose an answer
rate of evaporation is greater than the rate of condensation
the rate of condensation is greater than the rate of evaporation
The rate of condensation and evaporation become equal
it depends upon the nature of the liquid
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Question # 11
An alkyl halide reacts with NH3 to give
Choose an answer
Amide
Cyanide
Amine
Aniline
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Question # 12
The mass of one mole of proton is
Choose an answer
1.008 g
0.184 g
1.673 g
1.008 mg
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Question # 13
The range of UV-B is:
Choose an answer
320 to 400 nm
200 to 280 nm
280 to 320 nm
50 to 400 nm
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Question # 14
The element like nitrogen, phosphorus, calcium, are added in large amounts to the soils and are called
Choose an answer
Nutrents elemets
Basic elements
Basic elements
Additives
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Question # 15
Which one of the following is a water soluble vitamin
Choose an answer
D
K
A
Ascorbic acid (Vic C)
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Question # 16
Number of elements in the first period of the periodic table are
Choose an answer
Two
Four
One
Eight
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Question # 17
Value of rate constant k is specific for a reaction, and varies from reaction to reaction. The value of k of a reaction changes with
Choose an answer
Time
Temperature
Concentration of reactants
Order of reaction
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Question # 18
Which of the following aqueous solutions have the lowest freezing point
Choose an answer
5.85% NaCI
6% urea
34.2 sucrose
All of them have same freezing points
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Question # 19
Reation of which with Grignard's reagent gives primary alcohol:
Choose an answer
Formaldehyde
Aldehyde
Ketones
Acetone
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Question # 20
Select from the following which one is alcohol?
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CH
3
-CH
2
-OH
CH
3
-O-CH
3
CH
3
COOH
CH
2
-CH
2
-BR
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Question # 21
Grignard reagent is not prepared in aqueous medium but prepared in ether medium because
Choose an answer
The reagent is highly reactive in ether
The reagent does not react with water
The reagent becomes inactive in water
The reagent reacts with water
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Question # 22
Zwitter ion is ______ ion an amino acid
Choose an answer
Polar
Monopular
Dipolar
Non polar
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