set 2 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) $^16O_8$
(b) $^1H_1$
(c) $^12C_6$
(d) $^35Cl_17$
The correct answers to the above question in:
Answer: (c)
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Read more nature of matter and composition Based General Science Questions and Answers
Question : 1
What is the weight of one atom of Hydrogen in grams?
a) $6.62 × 10^{–24}$
b) $6.023 × 10^{–23}$
c) $1.66 × 10^{–24}$
d) None of these
Answer »Answer: (c)
Question : 2
Two substances A and B when brought together form a substance C with the evolution of heat. The properties of C are entirely different from those of A and B. The substance C is
a) a mixture
b) an element
c) a compound
d) none of these.
Answer »Answer: (c)
C is a compund which is formed as a result of reaction between A and B.
Question : 3
Solutions with low concentrations of solutes are
a) solvents
b) dilute
c) concentrated
d) None of these
Answer »Answer: (b)
dilute solutions have low concentration of solid.
Question : 4
The chemical technique applied to find out age of fossils is knows as
a) Photosynthesis
b) Carbon dating
c) Nuclear fusion
d) Fermentation
Answer »Answer: (b)
Question : 5
Which one of the following petroleum refinary products has the lowest boiling point?
a) Gasoline
b) Kerosene
c) Diesel
d) Lubricating oil
Answer »Answer: (a)
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