981: Human activities in the recent past have caused the increased concentration of carbon dioxide in the atmosphere, but a lot of it does not remain in the lower atmosphere because of
1. Its escape into the outer strato-sphere.
2. The photosynthesis by phyto-plankton in the oceans.
3. The trapping of air in the polar ice caps
Which of the statements given above is/are correct?
(a) 1 and 2
(b) 2 only
(c) 2 and 3 only
(d) 3 only
982: Which one of the following correctly reflects the position of the Upper House of the State legislature as compared to the position of the Upper House of the Parliament?
(a) While one-third of the members of the Rajya Sabha retire every second year, one-fourth of the members of the Legislative Council retire every eighteen months
(b) There is no provision for a joint sitting of the Legislative Assembly and the Legislative Council in the States for resolving deadlocks while there is such a provision in the case of the two Houses of Parliament
(c) While no Bill other than a Money Bill can originate in the State Legislative Council, no Bill can originate in the Rajya Sabha
(d) While Rajya Sabha has twelve nominated members, the State Legislative Council has none
983: Consider the following statements :
Coke is one of the materials of the charge added to blast furnace for the production of steel/iron. Its function is to
I. act as a reducing agent.
II. remove silica associated with the iron ore.
III. function as fuel, to supply heat.
IV. act as an oxidizing agent.
Of these statements:
(a) I and II are correct
(b) II and IV are correct
(c) I and III are correct
(d) III and IV are correct
984: The rough outline map given shows centres of cement industry labelled 1, 2, 3 and 4. Match these centres with the following sets of names :
Names
(A) Katni
(B) Tirunelveli
(C) Sikka
(D) Churk
Select the correct answer using the codes given below :
Codes :
(a) A-3, B-4, C-2, D-1
(b) A-2, B-4, C-1, D-3
(c) A-1, B-2, C-4, D-3
(d) A-2, B-3. C-1, D-4
985: 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