Answer: doctor

Explanation:
Let us analyse all the conditions. The lawyer is at the extreme right end of the row.
, , , , lawyer.
1 2 3 4 5
Grocer is to the immediate left of the lawyer
, , , grocer, lawyer.
1 2 3 4 5
The grocer is not next to the barber. So barber cannot be in seat 3.
The barber and the tailor are next to each other.
So the order of seating can be,
barber, tailor, doctor, grocer, lawyer
or
tailor, barber, doctor, grocer, lawyer
or
doctor, barber, tailor, grocer, lawyer.
The blank is occupied by the doctor. So the doctor or tailor can be in the middle of the row.    

Answer: Sandy must be at one of the ends of the row.

Explanation:
Let us consider the given data. R is to the immediate right of T, i.e. T -> R (TR), whereas P and Q have exactly two persons sitting in between them that can be in four possible ways as shown below.



(i) P--Q- (ii) -P — Q

(iii)Q— P- (iv) -Q--P


T and R must be between P and Q as they are next to each other. In any case, S must be at one extreme end either at the left extreme or at the right extreme.       

Answer: R

Explanation:
File C has as many items to its left as to its right. So it must be in the centre of the row. C is to the immediate left of box R
So R must be at space 5.
1 2 3 4 5 6 7
C R
The extreme ends must be occupied by only A and B, as no box is at the extreme ends. Box P is to the immediate right of file A. In any case, the third from the right end of the row is R.

Answer: Ankit and Bobby or Rinku and Chetan.

Explanation:
 Parvez sits to the immediate left of Chetan in the same row and opposite to Qadir. Ankit and Parvez have only one person between them. So, the arrangement in that
row can be
Parvez, Chetan Ankit - or
Ankit - Parvez, Chetan.
Rinku and Bobby have two persons between them. So in their row, it may be Rinku — Bobby or
Bobby - - Rinku
As Parvez sits opposite to Qadir, the two rows must have people as follows.
Rinku / Bobby - Qadir Rinku/Bobby
Ankit - Parvez Chetan
So, Ankit and Bobby may be diagonally opposite, just as Chetan and Rinku can be.

Answer: Anatomy        

Explanation:
Books on Chemistry and Botany have exactly two books between them just as books on Maths and Physics have. Mathematics book is neither at the top nor at the bottom. So, the arrangement of Chemistry and Botany books may be as follows.
Chemistry - - Botany - (or) - Chemistry - - Botany or (ii) Botany - - Chemistry - (or) - Botany - - Chemistry