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  1. S

    Biology; Chemistry; Physics: Post your doubts here!

    how
  2. S

    Maths help.

    okay thank you...but if question is to draw frequency polygon so are we going to drw histogram first and then join its midpoints or we just need to draw ploygon ???
  3. S

    Maths help.

    what is a frequency ploygon ??
  4. S

    Biology; Chemistry; Physics: Post your doubts here!

    22.)Caesium, Cs, is an element in Group I of the Periodic Table. Which statements about Caesium are true? 1 Caesium conducts electricity both when solid and when molten. 2 Caesium reacts explosively with water. 3 Caesium reacts with water and forms a solution of pH < 7. A.1 and 2 only B.1 and 3...
  5. S

    Biology; Chemistry; Physics: Post your doubts here!

    HI , there i have a chem prob from past paper..can u plz explain its answer .... Q)))Sodium hydroxide solution was added to dilute hydrochloric acid. The pH of the solution in the flask was measured at intervals until no further change of pH took place. What would be the pH change in this...
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