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प्रश्न
In modern civilization, __________ has become a primary need.
विकल्प
food
cloth
shelter
energy
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उत्तर
In modern civilization, energy has become a primary need.
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संबंधित प्रश्न
Write the correct option from the given multiple options.
Which of the following is not the source of green energy?
Explain the following sentence.
Energy obtained from fossil fuels is not green energy.
Explain the following sentence.
Saving energy is the need of the hour.
Forms of energy.
Stove : Thermal energy : : Sewing machine : _____________
Give scientific reason.
Energy saving is a need of the hour.
Two springs A and B are stretched by applying forces of equal magnitudes at the four ends. If spring constant of A is 2 times greater than that of spring constant of B, and the energy stored in A is E, then that in B is
