set 2 MCQ Questions & Answers Detailed Explanation
MOST IMPORTANT general science mcq - 4 EXERCISES
The following question based on classification of elements, chemical bonding, periodicity in properties & physical transformation topic of general science mcq
(a) the chain reaction in nuclear reactor is not controlled.
(b) no chain reaction takes place in nuclear reactor while in the atomic bomb there is a chain reaction.
(c) the chain reaction in nuclear reactor is controlled.
(d) no chain reaction takes place in atomic bomb while it takes place in nuclear reactor.
The correct answers to the above question in:
Answer: (c)
There are two main fundamental differences between the design of an atomic bomb and the design of a nuclear reactor.
One difference is the way the fission reactions are controlled and the second difference stems from the enrichment of the fuel.
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Read more chemistry Based General Science Questions and Answers
Question : 1
Which of these choices is not a family of elements?
a) Metals
b) Inert gases
c) Halogens
d) All of these
Answer »Answer: (a)
A family of elements consists of elements present in a group of the periodic table.
Question : 2
Which one of the following is not a periodic property i.e., does not show any trend on moving from one side to the other in the periodic table?
a) Valency
b) Radioactivity
c) Atomic size
d) Electronegativity
Answer »Answer: (b)
Question : 3
Match List-I with List-II:
List-I | List-II |
A. Electrolysis | 1. Resistant to corrosion |
B. Anodization | 2. Laws of electrolysis |
C. Electrochemical cell | 3. Recharging of battery |
D. Faraday | 4. Chemical energy into electrical energy |
a) A – (1), B – (3), C – (4), D – (2)
b) A – (3), B – (1), C – (2), D – (4)
c) A – (3), B – (4), C – (1), D – (2)
d) A – (3), B – (1), C – (4), D – (2)
Answer »Answer: (d)
Question : 4
Pasteurization is related to
a) Dehydration of milk
b) Fermentation of milk
c) Sterilization of milk
d) Distillation of milk
Answer »Answer: (c)
Question : 5
Consider the following statements :
- 22gm. of $CO_2$ consist of 1 mole.
- Number of molecules in 4 gm of oxygen is $10^22$.
- Mass of 1 mole of a substance is called its formula mass.
a) 1 and 3
b) 1 and 2
c) 2 and 3
d) 1, 2 and 3
Answer »Answer: (d)
1 mole of CO2 = 44g Mass of 1 mole of a substance is called molar mass.
Question : 6
Which of the following is an actinide?
a) Polonium
b) Promethium
c) Plutonium
d) Palladium
Answer »Answer: (c)
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