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Why oxygen is a gas, whereas sulphur is ...

Why oxygen is a gas, whereas sulphur is a solid?

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MODERN PUBLICATION-TEST PAPER 2-EXERCISE
  1. What do you understand by zero order reaction?

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  2. How does the copper is extracted from low grade ore?

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  3. Why oxygen is a gas, whereas sulphur is a solid?

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  4. Which of the following is the IUPAC name of K(4)[Fe(CN)(6)] ?

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  5. What are enzymes ?

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  6. Write the mechanism of the reaction of HI with methoxy methane.

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  7. Derive the formula to calculate the density of a cubic crystal of elem...

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  8. State henry's law.

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  9. Give reason. Why in chemistry of all the lanthanoids is quite similar?

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  10. Although chlorine is an electron withdrawing group, yet is op directin...

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  11. Although phenoxide ion has more number of resonating structures than c...

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  12. What happens when formaldehyde reacts with HCN?

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  13. How can a carboxylic acid be converted to an aldehyde in two steps?

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  14. How can you prepare benzoic acid from Ethyl benzene? Give equations on...

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  15. Why should medicines not be taken without consulting doctors ?

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  16. Derive an expression for the rate constant of first order reaction. Gi...

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  17. Derive an expression for the rate constant of first order reaction. Gi...

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  18. State and explain Faraday's laws of electrolysis. 0.2015g of copper we...

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  19. State and exlain Kohlarausch.s law of independent migration of ions . ...

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  20. Write notes on : Allotropes of sulphur

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