What is photoelectric colorimeter?
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Why does a freely suspended magnetic needle always point North and South ?
What is the octane number range of te petrol used in India ? 1)90-95 2)90-99 3)80-90
Why does a white paper appear white, when light is not to fall on it ?
which gas is called laughing gas?
how much tds is ok for drinking water
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How can you mark your name on a glass plate by a simple chemical method ?
Mention a few important criteria for satisfactory colorimetric analysis.
Why does the snow on the mountains not melt all at once, not changed into water very slowly?
Why is heat more oppressive on a damp hot day ?
describe the lewis dot structure of Mg2+?
When we heat one end of and iron bar, the other end also gets heated up why ?
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