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CHETANA PUBLICATION- SOME BASIC CONCEPTS OF CHEMISTRY-EXERCISE
- A sample of pure water , whatever the source always contains……………… by ...
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- Which of the following compounds can NOT demonstrate the law of multip...
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- Which of the following temperature will read the same value on Celsius...
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- SI unit of the quantity electric current is ………………
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- In reaction N 2 + 3H2 rarr 2NH3 the ratio by volume ofN2 , H2 and NH...
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- Which of the following has maximum number of molecules ?
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- How many g of H2 O are present in 0.25 mol of it ?
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- The number of molecules in 22.4 cm^3 of nitrogen gas at STP is
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- Which of the following has the largest number of atoms ?
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- A sample of pure water , whatever the source always contains……………… by ...
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- The number of molecules in 22.4 cm^3 of nitrogen gas at STP is
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- In reaction N 2 + 3H2 rarr 2NH3 the ratio by volume ofN2 , H2 and NH...
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- The temperature at absolute zero is.
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- Define the term unit .
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- What is the ratio of molecules in 1 mole of NH3 and 1 mole of HNO3 ?
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- What is a chemical reaction ?
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- Calculate number of moles of hydrogen in 0.448 litre of hydrogen gas a...
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- How do atoms of an element exist in nature ?
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- How does Dalton 's atomic theory explain laws of chemical combination ...
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- Explain law of chemical combinations.
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