Optical rotations of some compounds along with their structures are given below. Which of them have $D -$ configuration?

I, I I, I I I

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I I, I I I

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I, I I

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I I I

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Solution

The correct option is C $I, I I, I I I$
I, II and III structures have D configuration with -OH group on the lowest asymmetric carbon is on the right side which is comparable to (+) glyceraldehyde.

Hence, option A is correct.

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Optical rotations of some compounds along with their structures are given below. Which of them have D− configuration?

The correct option is C I,II,IIII, II and III structures have D configuration with -OH group on the lowest asymmetric carbon is on the right side which is comparable to (+) glyceraldehyde.Hence, option A is correct.

Optical rotations of some compounds along with their structures are given below. Which of them have $D -$ configuration?

The correct option is C $I, I I, I I I$
I, II and III structures have D configuration with -OH group on the lowest asymmetric carbon is on the right side which is comparable to (+) glyceraldehyde.

Hence, option A is correct.