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Fill in the blanks : The half life perio...

Fill in the blanks : The half life period of a radioactive substance is 69.3 years. The disintegration constant is …………

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MODERN PUBLICATION-SAMPLE PAPER 2012-EXERCISE
  1. Electrophilic substitution reaction in benzaldehyde takes place at

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

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  3. Fill in the blanks : The half life period of a radioactive substance i...

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  4. Nylon 6,6 is prepared by the condensation of and ....

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  5. The transition elements are paramagnetic due to the presence of ….. .

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  6. Fill in the blanks : The name of electrophile used for the sulphonatio...

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  7. In the electrochemical cell, oxidation takes place at "………………..".

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  8. Which halogen acid does attack glass?

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  9. What is the value of change in entropy at equilibrium ?

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  10. Write the IUPAC name of the following compund

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  11. Give the relationship between chemical equivalent and electrochemical ...

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  12. Write the name of two antibiotic drugs.

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  13. Why is the solution containing sodium acetate and acetic acid called a...

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  14. Represent the cell and calculate the Standard e.m.f. of the cell havin...

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  15. Why hydrofluoric acid is the weakest of all the halogen acids ?

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  16. What is the action of ozone with lead sulphide? Give equation.

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  17. H2S cannot be dried by passing over conc. H2SO4 because:

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  18. What happens when SnCl2 solution is added to CuCl2 solution ?

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  19. Sodium acetate solution is alkaline. Give reason.

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  20. State KohIrausch’s law.

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