2641: In the above figure, ABCD is a cyclic quadrilateral, AB = BC and angle BAC = 70°, then angle ADC is
(a) 40°
(b) 80°
(c) 110°
(d) 140°
2642: The given figure shows a portion of Southern India. The proposed site (Koodankulam) for the construction of two 1000 MW nuclear power plants has been labelled in the map as
(a) A
(b) B
(c) C
(d) D
2643: Consider the following pairs:
Famous place:
1. Pandharpur
2. Tiruchirappalli
3. Hampi
River:
1. Chandrabhaga
2. Cauvery
3. Malaprabha
Which of the pairs given above are correctly matched?
(a) 1 and 2 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2644: Which one of the following is used for dating archaeological specimens in wood, bones and shells?
(a) Uranium-238
(b) Argon isotope
(c) Carbon-14
(d) Strontium-90
2645: Assertion (A) :
Muhammad bin Tughlaq left Delhi, and, for two years lived in a camp called Swarga-dwari.
Reason (R) :
At that time, Delhi was ravaged by a form of plague and many people died.
(a) Both A and R are individually true and R is the correct explanation of A
(b) Both A and R are individually true but R is not a correct explanation of A
(c) A is true but R is false
(d) A is false but R is true