$C H_{3} C H_{2} C \equiv C H$ $C H_{3} C \equiv C C H_{3}$
I II

$C H_{3} C H_{2} C H_{2} C H_{3}$ $C H_{3} C H = C H_{2}$
III IV

Which reagent is the most useful for distinguishing compound I from the rest of the compounds?

a l k . K M n O_{4}

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B r_{2} / C C I_{4}

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B r_{2} / C H_{3} C O O H

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A m m o n i c a l A g N O_{3}

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Solution

The correct option is B $A m m o n i c a l A g N O_{3}$
The compound (I) is a terminal alkyne. It will give white ppt with ammoniacal silver nitrate solution. Hence, ammonical silver nitrate solution can be used to distinguish compound I from the rest of the compounds. Also terminal alkynes give red ppt with ammoniacal cuprous chloride solution.

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Similar questions

Q. Which is the most suitable reagent among the following distinguish compound (3) from the others ?

C h_{3} C = C - C H_{3}

C H_{3} C H_{2} - C H_{2} - C H_{3}

C H_{3} C H_{2} C = C H

C H_{3} C H = C H_{2}

Q. Which reagent is the most useful for distinguishing compound I from the rest of the compounds?

C H_{3} - C H_{2} C \equiv C H (I)

C H_{3} - C \equiv C - C H_{3} (I I)

C H_{3} - C H_{2} - C H_{2} - C H_{3} (I I I)

C H_{3} - C H = C H_{2} (I V)

Arrange the following compounds in decreasing order of reactivity with Br2

CH2=CH2 (I), CH ≡ CH (II), CH2=CHCl (III)

Arrange the following compounds in decreasing order of reactivity with $B r_{2}$

$C H_{2} = C H_{2} (I), C H \equiv C H (I I), C H_{2} = C H C l (I I I)$

Q. Which is the most suitable reagent among the following to distinguish compound (iii) from rest of the compounds?

(i) C H_{3} - C \equiv C - C H_{3}

(i i) C H_{3} - C H_{2} - C H_{2} - C H_{3}

(i i i) C H_{3} - C H_{2} - C \equiv C H

(i v) C H_{3} - C H = C H_{2}

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CH3CH2C≡CH CH3C≡CCH3 I IICH3CH2CH2CH3 CH3CH=CH2 III IV Which reagent is the most useful for distinguishing compound I from the rest of the compounds?

$C H_{3} C H_{2} C \equiv C H$ $C H_{3} C \equiv C C H_{3}$
I II

$C H_{3} C H_{2} C H_{2} C H_{3}$ $C H_{3} C H = C H_{2}$
III IV

Which reagent is the most useful for distinguishing compound I from the rest of the compounds?