3531: 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
3532: Which one of the following pairs is correctly matched ?
(a) Vikramsila Monastery : Uttar Pradesh
(b) Hemkund Gurudawara : Himachal Pradesh
(c) Udayagiri Caves : Maharashtra
(d)Amaravati Buddhist Stupa : Andhra Pradesh
3533: Which one of the following archaeologists initially discovered the Mohanjedaro site of the Indus valley civilisation?
(a) Sujohu Marshall
(b) Daya Ram Sahni
(c) Rakhal Das Banerji
(d) Sir Mortimer Wheeler
3534: Which one of the following provisions was NOT made in the Charter Act of 1833?
(a) The trading activities of the East India Company were to be abolished
(b) The designation of the supreme authority was to be changed as the Governor General of India in Council
(c) All law-making powers to be conferred on Governor-General in Council
(d) An Indian was to be appointed as a Law Member in the Governor- General's Council
3535: The characteristic feature of virus is that
(a) It is made of fats.
(b) It multiplies only on dead animals.
(c) It multiplies only on hosts.
(d) It lacks chlorophyll.