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) fractional distillation
(b) decantation
(c) filtration
(d) sublimation
The correct answers to the above question in:
Answer: (a)
Mixture of ethanol and water can be separated by fractional distillation as they have different boiling points.
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Read more nature of matter and composition Based General Science Questions and Answers
Question : 1
Which of the following is a good lubricant ?
a) Molten carbon
b) Diamond powder
c) Graphite powder
d) Alloy of carbon and iron
Answer »Answer: (c)
Question : 2
Iodised salt is a
a) compound formed by combination of potassium iodide and common salt
b) mixture of potassium iodide and common salt
c) mixture of molecular iodide and common salt
d) compound formed by molecular iodine and common salt
Answer »Answer: (a)
Question : 3
The size of colloidal particles usually lies in the range
a) 10–3 - 10–5 cm
b) 10–7 - 10–9 cm
c) 10–5 - 10–7 cm
d) 10–2 - 10–6 cm
Answer »Answer: (c)
The size of colloidal particles usually lies in the range of one nm to 100 nm.
i.e., 10–5 to 10–7 cm or 1nm = 10–7 \ 100 nm = 10–5cm
Question : 4
Match the following columns?
Column I | Column II |
A. Azidothymidine | 1. Antibiotic |
B. cis-Platin and taxol | 2. Drugs for AIDS patient |
C. Streptomycin | 3. Drugs for treating cancer patients |
D. Paracetamol | 4. Antipyretic |
a) A - 4, B - 2, C - 3, D - 1
b) A - 2, B - 3, C - 1, D - 4
c) A - 1, B - 2, C - 4, D - 3
d) A - 1, B - 2, C - 3, D - 4
Answer »Answer: (b)
Question : 5
Which one among the following is a sin smelling agent added to LPG cylinder to help the detection of gas leakage?
a) Methane
b) Ethanol
c) Thioethanol
d) Chloroform
Answer »Answer: (c)
Question : 6
Non-reacting gases have a tendency to mix with each other. This phenomenon is known as
a) effusion
b) chemical reaction
c) diffusion
d) explosion
Answer »Answer: (c)
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