First Premise is Particular Affirmative (I–type).
Second Premise is Universal Affirmative (A–type).
Some buses are cars. ↔ All cars are caves.

Correct Option: C

First Premise is Particular Affirmative (I–type).
Second Premise is Universal Affirmative (A–type).
Some buses are cars. ↔ All cars are caves.
I + A ⇒ I–type of Conclusion “Some buses are caves.”
Conclusion II is the Converse of it.
Conclusion IV is Converse of the second Premise.

Some girls (not all) are stars. Therefore, Meena may or may not be star.

Correct Option: D

Some girls (not all) are stars. Therefore, Meena may or may not be star.
From Affirmative sentences, we cannot derive Negative Conclusion.
Thus, neither Conclusion I nor Conclusion II follows.

Both the Premises are Particular Affirmative (I-type).
No Conclusion follows from the two Particular Premises.

Correct Option: B

Both the Premises are Particular Affirmative (I-type).
No Conclusion follows from the two Particular Premises.
Conclusion II is the Converse of the first Premise.

First Premise is Particular Affirmative (I–type).
Second Premise is Universal Affirmative (A–type).
Many (Some) books are rocks. ↔ All rocks are clips.

Correct Option: A

First Premise is Particular Affirmative (I–type).
Second Premise is Universal Affirmative (A–type).
Many (Some) books are rocks. ↔ All rocks are clips.
I + A ⇒ I – type of Conclusion “Some books are clips.”
This is the Conclusion I.

First Premise is Universal Negative (E–type).
Second Premise is Universal Affirmative (A–type).
Ajay is a man. ↔ No man is a donkey.

Correct Option: A

First Premise is Universal Negative (E–type).
Second Premise is Universal Affirmative (A–type).
Ajay is a man. ↔ No man is a donkey.
A + E ⇒ E–type of Conclusion “Ajay is not donkey.”
This is Conclusion I.