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Galvanized iron sheets have a coating of 1 Tin lead 2 Zinc 3 Chromium 4 Lead
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Who invented telescope?
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
What vendors does Ameber Recommed?
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atoms are composed of Electrons & Protons or Electrons & Protons ?
A substance which changes readily into vapor without heating is called 1 Efflorescent 2 Synthetic 3 Volatile 4 Effervescent
Which of the following metals can displace zinc from a solution of zinc sulphate? 1 Lead 2 Magnesium 3 Iron 4 Mercury
Brass gets discolored in air because of the presence of which of the following gases in air? 1 Carbon dioxide 2 Oxygen 3 Hydrogen sulphide 4 Nitrogen
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What is one light year?