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What is the average molecular mass of ...

What is the average molecular mass of drugs ?

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(a). What is the average molecular mass of starch? (b). What is the approximate average number of glucose units in the sample of starch? (Given: 20 gm L^(-1) of starch has an osmotic pressure =10^(-2) atm at 25^(@)C.)

A sample of polymer contains 30% molecules with a molecular mass 20,000 , 40% with molecular mass 30,000 and 30 % with 60,000 ." .What is the number average molecular mass of the polymer?

In a polymer sample, 30% of molecules have a molecualr mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer?

Knowledge Check

  • A sample of polymer contains 30% molecules with molecular mass 20,000, 40% with molecular mass 30,000 and 30% with 60,000. What is the number average molecular mass of the polymer?

    A
    36000
    B
    48000
    C
    50000
    D
    25000

  • In a polymer sample 30% of molecules have a molecular mass 20,000 , 40 % have 30,000 and the rest 60,000 . What is the weight average molecular mass of the polymer

    A
    40300
    B
    30600
    C
    43333
    D
    50400

  • In a polymer sample, 30% of molecules have a molecualr mass of 20,000, 40% have 30,000 and the rest 60,000. What is the weight average molecular mass of the polymer?

    A
    403000
    B
    306000
    C
    43333
    D
    50400
    • PRADEEP-CHEMISTRY IN EVERYDAY LIFE -NCERT EXEMPLAR PROBLEMS (SHORT ANSWER )
    1. What is the average molecular mass of drugs ?

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    2. Write the uses of medicines.

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    3. What are antiseptics ?

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    4. Which type of drugs come under anti-microbial drugs?

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    5. Where are receptors located ?

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    6. What is the harmful effect of hyperacidity ?

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    7. Which site of an enzyme is called allosteric site ?

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    8. What type of forces are involved in binding of substrate to the active...

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    9. What is the commonality between the antibiotic arsphenamine and azod...

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    10. Which class of drugs is used in sleeping pills ?

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    11. Aspirin is pain relieving antipyretic durg but can be used to pr...

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    12. Both antiacids and antiallergic drugs are antihistamines but they ...

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    13. What is a soft soap ?

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    14. If soap has high alkali content it irritates skin. How can the amou...

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    15. Explain why some times foaming is seen in river water near the pl...

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    16. Which category of the synthetic detergents is used in toothpaste ...

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    17. Hair shampoos belong to which class of synthetic detergent ?

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    18. Dishwashing soaps are synthetic detergents. What is their chemical nat...

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    19. Draw the diagram showing micelle formation by the following detergent....

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    20. How does the branching of hydrocarbon chain of synthetic detergents a...

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