871: When a CD (Compact Disc used in audio and video systems) is seen in sunlight, rainbow like colours are seen. This can be explained on the basis of the phenomenon of
(a) reflection and diffraction
(b) reflection and transmission
(c) diffraction and transmission
(d) refraction, diffraction and transmission
872: The chief ingredient of the mosquito repellent cream is derived from:
(a) Tulsi
(b) Neem
(c) Lemon
(d) Rice bran
873: Who among the following was not a writer of legal texts ?
(a) Yajnavalkya
(b) Manu
(c) Narada
(d) Bharavi
874: 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
875: Assertion (A):
The sponsor and the most prominent figure of the Chisti order of Sufis in India is Khwaja Moinuddin Chisti.
Reason (R):
The Chisti order takes its name from a village Chisti in Ajmer.
In the context of the above two statements, which one of the following is correct ?
(a) Both A and R are true and R is the correct explanation of A
(b) Both A and R are 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