2486: Biomass gasification is considered to be one of the sustainable solutions to the power crisis in India. In this context, which of the following statements is/are correct?

1. Coconut shells, groundnut shells and rice husk can be used in biomass gasification.

2. The combustible gases generated from biomass gasification consist of hydrogen and carbon dioxide only.

3. The combustible gases generated from biomass gasification can be used for direct heat generation but not in internal combustion engines.

Select the correct answer using the codes given below :

(a) 1 only
(b) 2 and 3 only
(c) 1 and 3 only
(d) 1, 2 and 3
2487: What is the pH level of blood of normal person?

(a) 4.5-4.5
(b) 6.45-6.55
(c) 7.35-7.45
(d) 8.25-8.35
2488: In the context of Indian economy, 'Open Market Operations' refers to

(a) borrowing by scheduled banks from the RBI

(b) lending by commercial banks to industry and trade

(c) purchase and sale of government securities by the RBI

(d) None of the above
2489: In the South Atlantic and South-Eastern Pacific regions in tropical latitudes, cyclone does not originate. What is the reason?

(a) Sea surface temperatures are low
(b) Inter-Tropical Convergence Zone seldom occurs
(c) Coriolis force is too weak
(d) Absence of land in those regions
2490: For pasteurization by the Flash Method, milk is heated to a temperature of:

(a) 0°C

(b) 100°C

(c) - 4°C

(d) 72°C