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PATHFINDER-BASICS IN CHEMISTRY-QUESTION BANK
- State the number of significant figures in the following 62.4
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- State the number of significant figures in the following 0.0405
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- What is the difference between 3.0g and 3.00g
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- The population of India based on 1981 census figure was 684 millions. ...
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- Add the numbers 28.521, 6.38 and 0.216 and report the final result cor...
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- The mass of copper metal is 6.432 gm and the density of copper is 7.6g...
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- Calculate the mass of 2.5 gram atom of magnesium.
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- How many gram molecules are present in 4.9g of H2SO4?
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- Why do we regard the gaseous state of water as vapours while that ammo...
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- An element has fractional atomic mass. What does this indicate?
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- When 4.2 g NaHCO3 is added to a solution of CH3COOH, weighing 10 g, it...
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- Copper sulphate crystals contain 25.45% Cu and 36.07% H2O. If law of c...
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- 10 ml of H2 contain 2000 molecules under certain temperature and press...
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- One volume of hydrogen combines with sulphur to produce one volume of ...
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- A flask P contains 0.5 mole of oxygen gas. Another flask Q contains 0....
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- From 200mg of CO2, 10^21 molecules are removed. How many moles of CO2 ...
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- How many molecules of CO2 are present in one litre of air containing 0...
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- On analyzing an impure sample of sodium chloride, the percentage of ch...
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- Copper gives two oxides. On heating one gram of each in hydrogen, we g...
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- The average atomic mass of copper is 63.5u. It exists as two isotopes ...
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