Hard water does not lather well with soap because
(A) It contains carbonates of calcium and magnesium
(B) It is highly coloured
(C) It contains suspended impurities
(D) It contains sodium chloride.
Answer Posted / guest
(A) It contains carbonates of calcium and magnesium
| Is This Answer Correct ? | 46 Yes | 3 No |
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Sir,I am rajkumar..I can completed b.tech with it branch i can apply for entrance exan ONGC graduation daharadun.In this exam sep 18.Its ok but iknow doubt sir...in this exam 1)general awarness butgeneral awareness and knowlege it same syllabus sir.... and how prepare general awareness ongc exam ....ple guid me sir send email chilukoti.rajkumar@gmail.com.and what books can be prepare tell fast sir..send me... thank you