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PRADEEP-SOME BASIC CONCEPTS OF CHEMISTRY-Competition (FOCUS) JEE (Main and Advanced)/Medical Entrance SPECIAL (I. Multiple Choice Question )
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- 0.3 g of an acid is neutralized by 40 cm^(3) of 0.125 N NaOH. Equivale...
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- 25.3 g of sodium carbonate, Na(2)CO(3) is dissolved in enough water to...
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- The number of molecules in 100 mL of 0.02N H(2)SO(4) is:
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- The ratio of masses of oxygen and nitrogen in a particular gaseous mix...
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- Suppose the elements X and Y combine to form two compounds of XY(2) an...
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- An organic compound made of C, H and N contains 20% of nitrogen. Its m...
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- Percentage of Se in peroxidase anhydrase enzyme is 0.5% by weight (at....
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- An alkaloid contains 17.28% of nitrogen and it's molecular mass is 162...
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- The crystalline salt Na(2)SO(4).xH(2)O on heating loses 55.9 % of its ...
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