The Purest form of water can be obtained from:-
I) a deep tube well
II) a running stream
III) a hot water spring
IV) a heavy shower of rain
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is there any device to convert to mechanical energy into electrical energy
The variety of coal in which the deposit contains recognizable traces of the orginal plant material is 1 Anthracite 2 Lignite 3 Peat 4 Bitumen
Which is the largest refractor telescope?
Which of the following elements is not-radioactive? 1 Uranium 2 Thorium 3 Plutonium 4 zirconium
Which one is having more weight when compare to diesel to petrole?
Explain any four values that can be developed through teaching Physical Science
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In an atomic explosion, enormous energy is released which is due to the 1 Conversion of neutrons into protons 2 Conversion of chemical energy into nuclear energy 3 Conversion of mass into energy 4 None of these
Ozone attacks 1 Mercury and silver 2 Copper 3 Silver and iron 4 None of these
Water is neither acidic nor alkaline because 1 It cannot accept or donate protons 2 It boils at a high temperature 3 It can dissociate into equal number of hydrogen ions 4 It cannot donate or accept electrons
Arihant was commissioned on which day?
The country helped in arihant’s built?
Which radioactive pollutant has recently drawn the attention of the public, due to its occurrence in the building material? 1 Radium 2 Radon 3 Thorium 4 Plutonium