JEE Main 2022 (Online) 29th June Evening Shift | Practical Organic Chemistry Question 45 | Chemistry

A white precipitate was formed when BaCl₂ was added to water extract of an inorganic salt. Further, a gas 'X' with characteristic odour was released when the formed white precipitate was dissolved in dilute HCl. The anion present in the inorganic salt is

I^$$-$$

SO₃^2$$-$$

S^2$$-$$

NO₂^$$-$$

JEE Main 2022 (Online) 28th June Morning Shift

MCQ (Single Correct Answer)

-1

The formula of the purple colour formed in Laissaigne's test for sulphur using sodium nitroprusside is :

NaFe[Fe(CN)₆]

Na[Cr(NH₃)₂(NCS)₄]

Na₂[Fe(CN)₅(NO)]

Na₄[Fe(CN)₅(NOS)]

JEE Main 2022 (Online) 26th June Morning Shift

MCQ (Single Correct Answer)

-1

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 :

Both Statement I and Statement II are correct.

Both Statement I and Statement II are incorrect.

Statement I is correct but Statement II is incorrect.

Statement I is incorrect but Statement II is correct.

JEE Main 2022 (Online) 25th June Evening Shift

MCQ (Single Correct Answer)

-1

During halogen test, sodium fusion extract is boiled with concentrated HNO₃ to

remove unreacted sodium

decompose cyanide or sulphide of sodium

extract halogen from organic compound