836: "The Modern Review" was started by:
(a) Madan Mohan Malaviya
(b) C. V. Chintamani
(c) Ramanand Chatterjee
(d) Annie Besant
837: The largest reserve of Sal forests is found in:
(a) Nilgiri hills
(b) Dehradun valley
(c) The Aravallis
(d) Eastern Peninsula
838: Sex chromosomes transmit which of the following diseases?
(a) Myopia
(b) Colour blindness
(c) Longsightedness
(d) Night blindness
839: Match List I with List II and select the correct answer using the codes given below the Lists :
List I List II
(Substance) (Physiological role)
I. Ptyalin (A) Converts angioten-sinogen in blood into angiotensin
II. Pepsin (B) Digests starch
III. Renin (C) Digests proteins
IV. Oxytocin (D) Hydrolyses fats
(E) Induces contraction of smooth muscles
Codes:
(a) I-B, II-C, III-A, IV-E
(b) I-C, II-D, III-B, IV-E
(c) I-B, II-C, IH-E, IV-A
(d) I-C, II-A, III-B, IV-D
840: Consider the following statements :
In a nuclear reactor, self-sustained chain reaction is possible, because
I. more neutrons are released in each of the fission reactions.
II. the neutrons immediately take part in the fission process.
III. the fast neutrons are slowed down by Graphite.
IV. every neutron realeased in the fission reaction initiates further fission.
Which of these statements are correct ?
(a) I, II and III
(b) I and III
(c) II and IV
(d) II, III and IV