7, 9, 10, and 11 only please

4-7 Which is not a disadvantage of solar energy and its applications? (a) Not suitable for cooling (b) High system cost (c) Intermittent (d) Large space requirement (e) Low concentration 4-8 Which conversion process is not used for the conversion of solar energy into other useful forms of energy (a) Heliochemical (b) Helioelectrical (c) Heliothermal (d) Heliofluid (e) None of these 4-9 The single most common application of solar energy is (a) Heliostat (b) Trombe wall (c) Flat-plate solar collector (a) Solar-power-tower plant (e) Solar pond 4-10 Which system can be used for the utilization of solar energy for a cooling application? (a) Organic Rankine cycle (b) Absorption refrigeration system (C) Vapor-compression refrigeration system (d) Brayton cycle (C) Evaporative cooler