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The function of boiling the sodium extract with concentrated Nitric acid before testing halogens isAnonymous voting
- To make solution clear
- To destroy CN^- and S^2- ions
- To make the solution acidic
- To disproportionate CN^- and S^2-
In the estimation of Duma's method 1.18g of an organic compound gave 224ml of N2 at NTP. The % of Nitrogen in the compound is aboutAnonymous voting
- 20.0
- 11.8
- 47.5
- 23.7
In Duma's method Nitrogen in organic compound is estimated in the form ofAnonymous voting
- N2
- NO
- NH3
- N2O5
In detection of CO2 , like water turns milky due to formation ofAnonymous voting
- CaO
- CaCl2
- CaCO3
- Ca(HCO3)2
0.4g of organic compound gave 0.188g if AgBr . The % of Br in the compound isAnonymous voting
- 39.8
- 36.4
- 20.0
- 48.0
In the estimation of Duma's method 1.18g of an organic compound gave 224ml of N2 at NTP. The % of Nitrogen in the compound is aboutAnonymous voting
- 20.0
- 11.8
- 47.5
- 23.7
An organic compound on heating with CuO produces CO2 but no H2O . It may beAnonymous voting
- CH4
- CCl4
- C2H5I
- CHCl3
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