Assertion and Reason problems
- 1. Assertion (A):
There are no medicines to cure the common cold.
Reason (R):
Over time, disease-causing bacteria and virus become drug resistant.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Explanation:
The correct reason is that there is still no medicine that counters that cold causing virus.
- 2. Assertion (A):
Large commercial vehicles passing through a city cause pollution and are required to pay entry tax.
Reason (R):
Money is needed to clean the environment.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Explanation:
Money is levied to discourage commercial vehicles to enter the city .
- 3. Assertion (A):
Mars is very close to the Sun.
Reason (R):
Smaller planets revolve closer to the Sun.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer:
Explanation:
Both are factually wrong. Mars is farther from the Sun than the Earth and is also smaller than the Earth and is also smaller than Earth.
- 4. Assertion (A):
Cacti are fleshy plants and have small leaves.
Reason (R):
Deserts witness sporadic
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: Both (A) and (R) are true, and (R) is the correct explanation of (A).
Explanation:
Because of the sporadic rains, the cacti conserve water.
- 5. Assertion (A):
Per hectare yields of most crops in India is very low, compared to that of many other countries.
Reason (R):
Most of the farmers in India are illiterate.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Explanation:
The yield is low because of many reasons such as old agriculture technique, absence of good quality inputs and so on.
- 6. Assertion (A):
e-commerce in India is growing at a rapid pace.
Reason (R):
India has a large number of young entrepreneurs with education from premier educational institutes.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: Both (A) and (R) are true, but (R) is not the correct explanation of (A).
Explanation:
Young entrepreneurs can take up any business but they will adopt e-commerce because it has high demand .
- 7. Assertion (A):
Alok bought a big car and will need a lot of petrol to run.
Reason (R):
All cars need petrol to run.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: (A) is true, but (R) is false.
Explanation:
The reason is factually incorrect.
- 8. Assertion (A):
Bread which develops mould on it has to be thrown away.
Reason (R):
All moulds are poisonous.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: (A) is true, but (R) is false.
Explanation:
Not all moulds are poisonous.
- 9. Assertion (A):
People are scared of snakes and whenever they see any snake, they kill it .
Reason (R):
All snakes are poisonous and can kill a person by injecting its poison by its fangs.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: (A) is true, but (R) is false.
Explanation:
Although most people think all snakes are poisonous, it is untrue.
- 10. Assertion (A):
The average temperature of the Earth has been rising.
Reason (R):
The greenhouse effect traps the Sun's heat within the Earth's atmosphere.
Options- A. Both (A) and (R) are true, and (R) is the correct explanation of (A).
- B. Both (A) and (R) are true, but (R) is not the correct explanation of (A).
- C. (A) is true, but (R) is false.
- D. (A) is false, but (R) is true. Discuss
Correct Answer: Both (A) and (R) are true, and (R) is the correct explanation of (A).
Explanation:
The reason is an important factor for the Earth's warming.
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