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V PUBLICATION-SOME BASIC CONCEPTS OF CHEMISTRY-QUESTION BANK
- How many significant figures are present in the following? i. 0.0025 ...
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- Round up the following upto three significant figures: i. 34.216 ii...
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- If the speed of light is 3.0xx10^8ms^(-1) calculate the distance cover...
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- In a reaction A+B2 rarrAB2 Identify the limiting reagent, if any, in t...
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- Dinitrogen and dihydrogen react with each other to produce ammonia acc...
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- How are 0.50 mol Na2CO3 and 0.50 M of Na2CO3 different.
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- If 10 volumes of dihydrogen reacts with 5 volumes of dioxygen gas, how...
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- Convert the following into basic units: i. 28.7pm ii. 15.15pm iii....
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- Which one of the following will have largest number of atoms? 1g Au (...
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- calculate the molarity of a Solution of ethanol in water in which the ...
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- Calculate the mass of one 12C atom in gram.
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- How many significant figures should be present in the answer of the fo...
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- Calculate the number of atoms in each of the following. (i) 52 moles...
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- A welding fuel gas contains carbon and hydrogen only. Burning a small ...
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- Calcium carbonate reacts with HCl as CaCO3+2HClrarrCaCl2+H2O+CO2 Calcu...
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- Manganese dioxide reacts with hydrochloric acid as MnO2+4HClrarrMnCl2+...
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- 6.488 g of lead combines directly with 1.002g of oxygen to form lead p...
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- a. Calculate the number of molecules in 5 moles of water.
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- Express in moles (a) 4 g of oxygen atoms (b) 21 g of nitrogen molecule...
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- Calculate the number of molecules in (i) 1 g of water and (ii) 5600 cm...
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