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
| Column I (Fuel Gas) | Column II (Major constituent) |
| A. CNG | 1. Carbon monoxide, hydrogen |
| B. Coal gas | 2. Butane, propene |
| C. LPG | 3. Methane, ethane |
| D. Water gas | 4. Hydrogen, methane, carbon monoxide |
(a) A - 3, B - 4, C - 2, D - 1
(b) A - 2, B - 1, C - 3, D - 4
(c) A - 2, B - 4, C - 3, D - 1
(d) A - 3, B - 1, C - 2, D – 4
The correct answers to the above question in:
Answer: (a)
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Read more nature of matter and composition Based General Science Questions and Answers
Question : 1
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)
Question : 2
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 : 3
The phenomenon of radioactivity was invented by
a) Henry Bacquerel
b) Maril Curie
c) Pierre Curie
d) J.J Thompson
Answer »Answer: (a)
Question : 4
The boiling point of alcohol is 78°C. What is this temperature in Kelvin scale
a) 375 K
b) 373 K
c) 351 K
d) 78 K
Answer »Answer: (c)
Question : 5
Select the one that is a physical change.
a) Rusting of iron
b) Growth of plant
c) Digestion of food
d) None of these
Answer »Answer: (d)
Each of the process given in options are irreversible and involve change in chemical properties hence all are chemical changes.
Question : 6
The chemical name of 'Marsh gas' is
a) Propane
b) Ethene
c) Methane
d) Hexane
Answer »Answer: (c)
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