set 3 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 3 EXERCISES
The following question based on nature of matter and composition topic of general science mcq
(a) heat causes molecules to disintegrate
(b) molecules vibrate rapidly when heated
(c) substances melt at different temperatures
(d) many substances fuse at the melting point
The correct answers to the above question in:
Answer: (c)
Different pure solid substances melts at a different temperatures.
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Read more nature of matter and composition Based General Science Questions and Answers
Question : 1
Boyle’s law states that the
a) volume is directly proportional to the temperature at constant pressure
b) pressure of a gas is directly proportional to the temperature at constant volume
c) pressure of a gas is inversely proportional the volume at constant temperature
d) None of the above
Answer »Answer: (c)
Question : 2
Which chemical was an important symbol in our freedom struggle ?
a) Medicine
b) Glucose
c) Fertilizer
d) Sodium chloride
Answer »Answer: (c)
Question : 3
Nail polish remover contains
a) formaldehyde
b) acetone
c) benzene
d) acetic acid
Answer »Answer: (b)
Question : 4
The phenomenon of radioactivity was invented by
a) Henry Bacquerel
b) Maril Curie
c) Pierre Curie
d) J.J Thompson
Answer »Answer: (a)
Question : 5
Solubility is a good separation technique for
a) different salts
b) noble gases
c) pure metals
d) metallic alloys
Answer »Answer: (a)
Different salts have different solubility in a particular solvent. Thus on this basis mixture of different salts can be separated.
Question : 6
Filtration can be used to separate
a) liquids from liquids
b) liquids from solids
c) solids from solids
d) liquids from gases
Answer »Answer: (b)
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