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The compound that gives a positive iodof...

The compound that gives a positive iodoform test is-

A

1-pentanol

B

2-pentanone

C

3-pentanone

D

pentanal

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The correct Answer is:
B
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A hydrocarbon (X) discharges the colour of cold alkaline KMnO_4 solution and reacts with warm dilute sulphuric acid containing HgSO_4 to form another compound (Y). (Y) gives positive iodoform test but does not react with Tollens' reagent. (Y), when distilled with 80% H_2SO_4 , gives sym-trimethylbenzene. Identify the compounds (X) and (Y) and write the reactions involved with proper reasons.

(A), (B) and (C ) are three non-cylic funtional isomers of a carbonyl compound with molecular formula C_(4)H_(8)O . Isomers (A) and (C ) give positive Tollen's test whereas isomer (B) does not give Tollens' test but gives positive iodoform test. Isomers (A) and (B) on reduction with Zn(Mg) | conc. HCl give the same product (D). (a) Write the structures of (A), (B) ,(C) and (D). (b) Out of (A), (B) and (C ) isomers, which one is least reactive towards addition of HCN ?

An organic compound [A] with molecular formula C_(5)H_(8)O_(2) is reduced to n-pentane on treatment with Zn-Hg//HCl . The compound [A] forms a dioxine with hydroxyl amine and give a positive iodoform test and Tollen's test. Identify the compound [A] and deduce its structure?

Identify the compounds which will respond to iodoform test: CH_(3)CH_(2)COCH_(2)CH_(2)I, CH_(3)CH_(2)COCH_(2)I CH_(3)CH_(2)COCH_(3), CH_(3)COOCH_(2)CH_(3) .

Which of the following compounds will respond to iodoform test ?

Fehling test is positive for

Which of the following does not give iodoform test ?

Which of the following compounds will not give positive chromyl chloride test?

Which of the following cannot be identified by iodoform test ?

Which of the following does not give iodoform test?

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