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Which of the following compounds can NOT...

Which of the following compounds can NOT demonstrate the law of multiple proportions ?

A

`NO, NO_2`

B

`CO,CO_2`

C

`H_2 O, H_2 O_2`

D

`Na_2 S, NaF`

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CHETANA PUBLICATION- SOME BASIC CONCEPTS OF CHEMISTRY-EXERCISE
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  2. A sample of pure water , whatever the source always contains……………… by ...

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  3. Which of the following compounds can NOT demonstrate the law of multip...

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  4. Which of the following temperature will read the same value on Celsius...

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  5. SI unit of the quantity electric current is ………………

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  6. In reaction N 2 + 3H2 rarr 2NH3 the ratio by volume ofN2 , H2 and NH...

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  7. Which of the following has maximum number of molecules ?

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  8. How many g of H2 O are present in 0.25 mol of it ?

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  9. The number of molecules in 22.4 cm^3 of nitrogen gas at STP is

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  10. Which of the following has the largest number of atoms ?

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  11. A sample of pure water , whatever the source always contains……………… by ...

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  12. The number of molecules in 22.4 cm^3 of nitrogen gas at STP is

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  13. In reaction N 2 + 3H2 rarr 2NH3 the ratio by volume ofN2 , H2 and NH...

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  14. The temperature at absolute zero is.

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  15. Define the term unit .

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  16. What is the ratio of molecules in 1 mole of NH3 and 1 mole of HNO3 ?

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  17. What is a chemical reaction ?

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  18. Calculate number of moles of hydrogen in 0.448 litre of hydrogen gas a...

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  19. How do atoms of an element exist in nature ?

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  20. How does Dalton 's atomic theory explain laws of chemical combination ...

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