Which of the following is/are is a conventional source of energy?
i.Coal
ii.Biogas
iii.Petroleum
iv.Tidal energy
Ai only
Bii only
Ci and iii only
Dii and iv only
Which of the following is/are is a conventional source of energy?
i.Coal
ii.Biogas
iii.Petroleum
iv.Tidal energy
Ai only
Bii only
Ci and iii only
Dii and iv only
Related Questions:
ചുവടെ തന്നിട്ടുള്ളവയിൽ ശരിയായ പ്രസ്താവനകൾ തിരഞ്ഞെടുക്കുക.