What percentage of the Sun's mass has been converted to energy? w) 50% x) 1% y) 2% z) .001% (read: one-thousandth of a percent) Answer : ANSWER: Z -- .001%...
Mass percentage of carbon in CO2 is approximately: w) 37.5% x) 27.3% y) 75% z) 45% Answer : ANSWER: X -- 27.3%...
The percentage of human genome which encodes proteins is approximately a) Less than 2% b) 5% c) 25% d) 99% Answer : a) Less than...
Explain higher and lower calorific value of a coal having following composition by mass Carbon 81%,Hydrogen 7%, Oxygen 8%,Nitrogen 2.5%, sulphur 1.5% and remaining is ash Answer : Carbon C = 81% = 0.81 Hydrogen = H2 = 7% = 0.07 Oxygen = O2 = 8% = 0.08 Nitrogen = N = 2.5% = 0.025 Sulphur = S =1.5% = 0.015 Ash = 2.5% = 0.025 Dulong's formula: H.C.V. of coal = 33800 C + 144500 ... = H.C.V.- 9H2 x 2442 KJ / Kg = 36187.5- 9 x 0.07 x 2442 L.C.V. of coal = 34649.04 KJ / KgĀ ...
The percentage share of electrical power from solar energy in the total electric power generation from all renewable energy sources sought to be achieved by Indian government by the year 2022, is (A) ~ 57.1% (B) ~ 65.5% (C) ~ 47.5% (D) ~ 75%Ā Answer : Answer: A...
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