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Bleaching properties of bleaching powder...

Bleaching properties of bleaching powder are due to its

A

Oxidising properties

B

Reducing properties

C

Basic properties

D

Disinfecting properties

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The correct Answer is:
A
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Explan the following : (i) Concentrated HNO_3 turns yellow in sunlight. (ii) Bleaching powder loses its bleaching property when it is kept in an open bottle for a long lime.

Bleaching powder is a mixture of

Explain the following: (a) In the preparation of HI from KI , phosphoric acid is preferred to sulphuric acid. (b) Boiling point of HCl is lower than HF . (c ) Bleaching powder loses its bleaching property when kept in an open bottle for a long time.

Bleaching power is a mixed salt of hydrochloric acid and hypochlorious acid. It has the formula, CaOCI_(2).H_(2)O . It is manuafactured by the action of chlorine on dry slaked lime at 40^(@)C . There is also a view that bleaching power is a mixture [Ca(OCI)_(2)+CaCI_(2).Ca(OH)_(2).H_(2)O] . The amount of chlorine obtained form a sample of bleching power by the treatement with excess of dilute acids or CO_(2) is called a available chlorine. A good sample of bleaching power constains 35-38% of available chlorine. On long standing, it undergoes auto-oxidation and the amount of acvailable chlorine decreases. The estimation of available chlorine is done volumetrically by (a) iodometric method or by (b) aresenite method. In textile industry, the cotton cloth is mainly bleached with the help of bleaching power. The chemical name of bleaching powder is

Bleaching powder does not contain:

Bleaching powder and bleach solution are produced on a large scale and used in several house hold production. The effectiveness of bleach solution is often measured by iodometry. Bleaching powder contains s salt of an oxoacid as one of its components. The anhyride of that oxoacid is

Predict the products when the following reactions are carried out (i) Bleaching powder reacts with lead nitrate in alkaline medium.

Bleaching powder and bleach solution are produced on a large scale and used in several house-hold products. The effectiveness of bleach solution is often measured by iodometry. 25 mL of household bleach solution was mixed with 30 mL of 0.50 M KI and 10 mL of 4N acetic acid. In the titration of the liberated iodine, 48 mL of 0.25 N Na_(2)S_(2)O_(3) was used to reach the end point. The molarity of the household bleach solution is :

The disillation of bleaching powder and acetone gives:

Write the balanced equation involved in the preparation of (a) bleaching powder from slaked lime (b) nitric oxide from nitric acid.

CENGAGE CHEMISTRY ENGLISH-P-BLOCK GROUP 17 ELEMENTS - THE HALOGEN FAMILY-Exercises (Single Correct)
  1. Select the correct stattement(s):

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  2. Which one of the following pairs of reactantas does not form oxygen wh...

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  3. One atom of …….. combines with one atom of bromine.

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  4. Which bond has the greatest polarity ?

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  5. Bleaching properties of bleaching powder are due to its

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  6. Bleaching powder is a mixture of

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  7. One can draw the map of a building on a glass plate by

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  8. The colour of I(2) is violet because it

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  9. The boiling points of halogens increase with increase in molecular wei...

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  10. The tetrahedral nature of the three bonds in a chlorate ion (CIO(3)^(T...

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  11. The catalyst used in the Deacon's process for the manufacture of chlor...

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  12. Which one of the following acts as an antichlor ?

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  13. One gas bleaches the colour of flowers by reduction and other by oxida...

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  14. Bromine occurs as a bromide in a minral called

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  15. The halide which does not give a precipitate with AgNO(3) is

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  16. Which halogen can be purified by sublimation ?

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  17. The halogen having the smallest convalent radius is

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  18. The following acids have been arranged in order of decreasing acid str...

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  19. Which has maximum pH in aqueous solution ?

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  20. The strongest oxidising agent among the following is

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