JEE Main 2022 (Online) 25th July Evening Shift | Practical Organic Chemistry Question 40 | Chemistry | JEE Main - ExamSIDE.com

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1

JEE Main 2022 (Online) 25th July Evening Shift

MCQ (Single Correct Answer)

+4

-1

In base vs. acid titration, at the end point methyl orange is present as

A

quinonoid form

B

heterocyclic form

C

phenolic form

D

benzenoid form

2

JEE Main 2022 (Online) 30th June Morning Shift

MCQ (Single Correct Answer)

+4

-1

The reagent neutral ferric chloride is used to detect the presence of ______________

A

sulphide ion and alcoholic $$-$$OH group.

B

acetate ion and phenolic $$-$$OH group.

C

sulphide ion and phenolic $$-$$OH group.

D

acetate ion and alcoholic $$-$$OH group.

3

JEE Main 2022 (Online) 29th June Evening Shift

MCQ (Single Correct Answer)

+4

-1

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

A

I^$$-$$

B

SO₃^2$$-$$

C

S^2$$-$$

D

NO₂^$$-$$

4

JEE Main 2022 (Online) 28th June Morning Shift

MCQ (Single Correct Answer)

+4

-1

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

A

NaFe[Fe(CN)₆]

B

Na[Cr(NH₃)₂(NCS)₄]

C

Na₂[Fe(CN)₅(NO)]

D

Na₄[Fe(CN)₅(NOS)]

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