Which of the following is an unconventional source of energy?

A. Thermal power

B. Hydroelectric power

C. Nuclear-fusion power

D. Solar power

Please do not use chat terms. Example: avoid using "grt" instead of "great".

You can do it
  1. Corrosion rate cannot be lowered by reducing the __________ of the corroding medium.
  2. Case hardening of a material is
  3. An abrupt and sudden fall in the reading of barometer is an indication of the
  4. In a drilling process, the metal is removed by both shearing & extrusion. General purpose drills are…
  5. Elimination of brittleness resulting from welding of saw blades is done by __________ of the welded…
  6. __________ can replace tungsten in high speed steel.
  7. Satellites burn off during re-entry to earth's atmosphere, because of the
  8. Quartz is a __________ material.
  9. In fluid flow, and heat and mass transfer, one encounters (i) kinematic velocity (μ), (ii) molecular…
  10. Work done by a/an __________ process is determined by ∫p. dv
  11. Joule-Thomson co-efficient is the ratio of
  12. Out of the following, the best material capable of withstanding shock & vibration without the danger…
  13. Which one of the following is incombustible?
  14. Other parameters remaining same, the recrystallisation temperature of an alloy is lowered, when
  15. Theoretical volume of oxygen required for complete combustion of 1Nm3 of acetylene, in oxyacetylene…
  16. Recrystallisation temperature of steel is __________ °C.
  17. Silicon crystal can be converted to p-type semiconductor by doping with
  18. Electrostatic separation of minerals from each other is based on their differences in the following…
  19. Dielectric
  20. In TIG welding, thoriated tungsten electrodes are used, because it
  21. Pick out the wrong statement.
  22. Circular cross section machine parts which are symmetrical about the axis of rotation are made by hot
  23. The activity co-efficient of the solute in a dilute solution
  24. The cooling rate required to freeze 1 ton of water at 0°C into ice at 0°C in 24 hours is __________…
  25. LVDT used for displacement measurement is a/an __________ transducer.
  26. Pick out the correct statement.
  27. Transformation range for ferrous material is the temperature interval during which __________ is formed…
  28. Frother is added in the froth floatation cell used in ore beneficiation to stabilise the air bubbles…
  29. Strain hardening effect in metals subjected to cold working is due to the __________ mechanism.
  30. Enzymes belong to the category of