[B].
[C].
[D].
Answer: Option A
Explanation:
As the working field of lawyer is Court, similarly the working field of chemist is laboratory.
[C].Artery
[D].Valve
Answer: Option A
Explanation:
All except Nerves are parts of the heart.
[C].Cow
[D].Goat
Answer: Option B
Explanation:
All except Llama are milk-yielding animals.
[B].
[C].
[D].
Answer: Option D
Explanation:
Because the sex of O is not known.
[C].Ammonia
[D].Urea
Answer: Option B
Explanation:
All except Nitrogen are used as fertilizers.
[B].
[C].
[D].
Answer: Option C
Explanation:
No answer description available for this question.
[B].
[C].
[D].
Answer: Option D
Explanation:
The series is tst/tst/tst/tst. Thus, the pattern ‘tst’ is repeated.