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Q. What are the characteristics of drinking water?
Sol. Characteristics of drinking water:
(1) It should be colourless and odourless.
(2) It should be pleasant in taste.
(3) It should be perfectly cool.
(4) Its turbidity should not exceed 10 ppm.
(5) It should be free from objectionable dissolved gases like hydrogen sulphide.
(6) It should be free from objectionable minerals such as lead, arsenic chromium and manganese salts.
(7) Its alkalinity should not be high. Its pH should be about 8.0.
(8) It should be reasonably soft.
(9) Its total dissolved solids should be less than 500 ppm.
Containers in Illustrations C and D are identical Each container is 3.25'w x 3.25'w x 8.4'l Total capacity of each container 88.725 cubic feet Each container is filled wit
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when 100ml of M/10 H2S04 is mixed with 500ml of M/10 NaOH then nature of resulting solution and normality of excess of reactant left isum 100 words accepted#
Charectaristic of covalent bond
Bond order is the number of chemical bonds between a pair of atoms. For example, in diatomic nitrogen N≡N the bond order is 3, while in acetylene H-C≡C-H the bond order between the
what is damage starch
the dug known as LSD has the formula C20H25N3O.one suspected sample contained 74.7%C,7.95%H,9.99%N.calculate the theoretical percentages to four significant figures
readings
Q. Show Experimental observations of werners theory? Werner showed that his postulates are consistent with experimental observations. He made use of basically three kinds of ex
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