2126: Which one of the following east flowing rivers of India has rift valley due to down warping ?
(a) Damodar
(b) Mahanadi
(c) Sone
(d) Yamuna
2127: The Brahmo Samaj is based on the principles of:
(a) Monotheism
(b) Polytheism
(c) Atheism
(d) Monism
2128: The Kelkar proposals which were in the news recently were the
(a) recommendations for reforms in the power sector
(b) recommendations for tax reforms
(c) guidelines for the privatisation
(d) guidelines for reducing vehicular pollution, and the promotion of CNG use
2129: Antigen is a substance which
(a) destroys harmful bacteria
(b) is used to treat poisoning
(c) lowers body-temperature
(d) stimulates formation of antibody
2130: Assertion
Carbon dioxide in air is necessary for sustaining life
Reason
Carbon dioxide is assimilated in carbohydrates in photosynthesis
(a) if A and R both are correct and R is the correct explanation of A
(b) if A and R both are correct but R is not the correct explanation of A
(c) if A is correct and R is incorrect
(d) if A is incorrect and R is correct