Given below are two statements :
Statement $I$ : Kjeldahl method is applicable to estimate nitrogen in pyridine.
Statement $II$ : The nitrogen present in pyridine can easily be converted into ammonium sulphate in Kjeldahl method.
In the light of the above statements,choose the correct answer from the options given below.

  • A
    Both Statement $I$ and Statement $II$ are false
  • B
    Statement $I$ is false but Statement $II$ is true
  • C
    Both Statement $I$ and Statement $II$ are true
  • D
    Statement $I$ is true but Statement $II$ is false

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In the estimation of sulphur in an organic compound,upon treatment with concentrated $HNO_3$,it is converted into:

In Dumas' method of estimation of nitrogen,$0.35 \ g$ of an organic compound gave $55 \ mL$ of nitrogen collected at $300 \ K$ temperature and $715 \ mm$ pressure. The percentage composition of nitrogen in the compound would be (aqueous tension at $300 \ K = 15 \ mm$). (in $\%$)

How much $\%$ sulphur is present in an organic compound if on analysis $0.53 \ g$ of this compound gives $1.158 \ g$ of $BaSO_4$ (in $\%$)?

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$0.53 \ g$ of an organic compound $(x)$ when heated with excess of nitric acid (concentrated) and then with silver nitrate gave $0.75 \ g$ of silver bromide precipitate. $1.0 \ g$ of $(x)$ gave $1.32 \ g$ of $CO_2$ gas on combustion. The percentage of hydrogen in the compound $(x)$ is . . . . . . $\%$. [Nearest Integer]
[Given : Molar mass in $g \ mol^{-1} H : 1, C : 12, Br : 80, Ag : 108, O : 16$; Compound $(x) : C_xH_yBr_z$] (in $\%$)

The transformation occurring in Dumas's method is given below:
$C_{2}H_{7}N + (2x + \frac{y}{2})CuO \rightarrow xCO_{2} + \frac{y}{2}H_{2}O + \frac{z}{2}N_{2} + (2x + \frac{y}{2})Cu$
The value of $y$ is ...... .(Integer answer)

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