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Find the percentage of calcium in calciu...

Find the percentage of calcium in calcium oxide.

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VMC MODULES ENGLISH-SOME BASIC CONCEPT OF CHEMISTRY-ENABLE
  1. Hydrogen peroxide in aqueous solution decomposes on warming to give ox...

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  2. For 1.34xx10^(-3) moles of KBrO3 to reduce into bromide 4.02 xx 10^(-3...

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  3. Find the percentage of calcium in calcium oxide.

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  4. 6 mole of FeC2 O4 on treatment with 2 mole of K2 Cr2 O7 in acidic medi...

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  5. Volume V1 mL of 0.1 M K2Cr2O7 is needed for complete oxidation of 0.67...

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  6. How many ml of 0.3M K2 Cr2 O7(acidic) is required for complete oxidati...

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  7. A mixture of petrol and ethyl alcohol contains 22.0 % alcohol. The den...

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  8. Which of the following should be done in order to prepare 0.40 M NaCI ...

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  9. 35ml sample of hydrogen peroxide gives off 500 ml of O2 at 27^@ C and ...

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  10. When 2.76 g of silver carbonate is strongly heated, it yields a residu...

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  11. A spherical ball of radius 3 cm contains 66.66% iron. If density of ba...

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  12. Specific volume of cylindrical virus particle is 6.02xx10^(-2)c c//g ,...

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  13. One litre of a sample of hard water contain 4.44mg CaCl(2) and 1.9mg "...

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  14. A 2.0 g sample containing Na2CO3 and NaHCO3 loses 0.248 g when heated ...

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  15. 500 ml of a solution contain 12.6 grams of oxalic acid [Mol. Mass = 12...

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  16. Equal volumes of 0.2M HCI and 0.4M KOH are mixed. The concentration of...

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  17. 1g of the carbonate of a metal was dissolved in 25mL of N-HCl. The re...

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  18. A sample of chalk (CaCO(3)) is contaminated with calcium sulphate 1.0 ...

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  19. 2 grams of a gas mixture of CO and CO2 on reaction with excess I2 O5 y...

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  20. The number of moles of KMnO(4) that will be needed to react with one ...

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