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120 g of an organic compound which contains only carbon and hydrogen on complete combustion gives 330 g of CO2 and 270 g of water. The percentage of carbon and hydrogen in the organic compound are respectively

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Important Questions on Organic Chemistry- Some Basic Principles and Techniques

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0.2 g of an organic compound was subjected to estimation of nitrogen by Dumas method in which volume of N2 evolved (at STP) was found to be 22.400 mL. The percentage of nitrogen in the compound is - [nearest integer] (Given: Molar mass of N2 is 28 g mol-1, Molar volume of N2 at STP:22.4 L)
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In the following structures, which one is having staggered conformation with maximum dihedral angle?
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During halogen test, sodium fusion extract is boiled with concentrated HNO3 to
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Given below are two statements :

Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed.

Statement II : If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and Na2S.

In the light of the above statements, choose the most appropriate answer from the options given below

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C7H5O22hvX2C˙6H5+2CO2

Consider the above reaction and identify the intermediated 'X'