86: A married couple adopted a male child. A few years later twin boys were born to them. The blood group of the couple is 'AB' positive and 'O' negative. The blood group of the three sons is A positive, B positive, and 'O' positive. The blood group of the adopted son is
(a) A positive
(b) B positive
(c) O positive
(d) Cannot be determined
87: Match List I with List II and select the correct answer using the code given below the lists :
List I (Author)
A. Amartya Sen
B. Bimal Jalan
C. Arundhati Roy
D. Mani Shankar
List II (Book)
1. An Ordinary Persons Guide to Empire
2. The Argumentative Indian
3. The Future of India
4. Confessions of a Aiyar Secular Fundamental
(A) 3 2 4 1
(B) 3 2 1 4
(C) 2 3 1 4
(D) 2 3 4 1
88: Consider the following crops :
1. Cotton
2. Groundnut
3. Rice
4. Wheat
Which of these are Kharif crops?
(a) 1 and 4
(b) 1, 2 and 3
(c) 2 and 3 only
(d) 2, 3 and 4
89: Which of the following pairs about India's economic indicator and agricultural production (all in rounded figures) are correctly matched?
1. GDP per capita Rs 37,000 (current prices)
2. Rice 180 million tons
3. Wheat 75 million tons
Select the correct answer using the code given below:
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) I, 2 and 3
90: Consider the following pairs: National Park River flowing through the Park
1. Corbett National Park : Ganga
2. Kaziranga National Park : Manas
3. Silent Valley National Park : Kaveri
Which of the above pairs is/are correctly matched?
(a) 1 and 2
(b) 1 and 3
(c) 3 only
(d) None