Practice Library
All MCQs
Browse exam-wise, subject-wise, and country-wise MCQs with explanations.
Choose an option to check your answer.
Correct Answer: B. Both statements together are sufficient.
Explanation:
Neither statement alone gives Ali's age.
Together they give 14.
Choose an option to check your answer.
Correct Answer: A. Statement I alone is sufficient.
Explanation:
Statement I gives x=7 directly.
Statement II allows many values.
Choose an option to check your answer.
Correct Answer: D. No other major service changes occurred.
Explanation:
Ruling out alternative causes strengthens the claim.
The other facts are irrelevant.
Choose an option to check your answer.
Correct Answer: C. Inappropriate appeal to authority
Explanation:
Acting fame does not establish nutrition expertise.
The endorsement is not scientific evidence.
Choose an option to check your answer.
Correct Answer: B. Circular reasoning
Explanation:
The conclusion is repeated as its own evidence.
No independent support is offered.
Choose an option to check your answer.
Correct Answer: A. The password was not incorrect.
Explanation:
The contrapositive gives no denial→not incorrect.
This follows when the rule fully applies.
Choose an option to check your answer.
Correct Answer: D. The alarm may be armed, but it is not certain.
Explanation:
The light may have another cause.
Affirming the consequent is invalid.
Choose an option to check your answer.
Correct Answer: C. Electricity did not fail.
Explanation:
The contrapositive of failure→closure is open→no failure.
This follows if the rule has no exceptions.
Choose an option to check your answer.
Correct Answer: B. The fee was paid.
Explanation:
Payment is stated as necessary.
Processing implies that condition was satisfied.
Choose an option to check your answer.
Correct Answer: A. Kamran was registered.
Explanation:
Registration is necessary for entry.
Kamran's entry implies registration.
Choose an option to check your answer.
Correct Answer: D. The website became unavailable.
Explanation:
The website outage is the stated result.
It is the effect of server failure.
Choose an option to check your answer.
Correct Answer: C. Heavy fog reduced visibility.
Explanation:
The reduced visibility is presented as the reason.
It is the cause of the delay.