How many moles of HIO4 is required to break down the following molecule?

1. 1

2. 2

3. 3

4. 4

Subtopic:  Carbohydrates - Classification & D-L configuration |
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NEET 2023 - Target Batch - Aryan Raj Singh
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Nitrous acid (HNO2) converts amino acids into hydroxy acids with retention of configuration.

Estimation of nitrogen gas evolved in the reaction is the basis of Van slyke estimation of amino acids. Which of the following amino acids cannot be analysed by Van slyke method?

Codes :

(1) only I

(2) only II

(3) I and III

(4) I, III, IV

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 57%
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Which of the following aldohexoses give the same osazone derivative ?

(1) I and IV

(2) I and III

(3) II and III

(4) III and IV

Subtopic:  Carbohydrates - Classification & D-L configuration |
 54%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following is a non–reducing sugar ?

1.  
2.
3.
4.
Subtopic:  Carbohydrates - Classification & D-L configuration |
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

How many moles of acetic anhydride (Ac2O) is needed to react completely with tartaric acid, ribose, and glucose respectively?

(1) 2,4, 5

(2) 2, 3, 4

(3) 4, 5, 6

(4) 4, 5, 5

Subtopic:   DNA, RNA & Metal Ions |
 52%
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Glucose on reduction with Na/Hg and water gives-

1. Sorbitol

2. Fructose

3. Saccharic acid

4. Gluconic acid

Subtopic:  Carbohydrates - Classification & D-L configuration |
 53%
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NEET 2023 - Target Batch - Aryan Raj Singh
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What will be product when glycine, is heated–

(1)  
(2)
(3)
(4)
Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
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NEET 2023 - Target Batch - Aryan Raj Singh
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             O
             ll
NH2-CH-C-NH-CH2-CO2H
         l
       CH3

Identify the amino acid obtained by hydrolysis of the above compound :-

1. Glycine

2. Alanine

3. Both (1) and (2)

4. None of the above

 

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 69%
From NCERT
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NEET 2023 - Target Batch - Aryan Raj Singh
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To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

At iso-electric point:

(1) conc. of cation is equal to conc of anion

(2) Net charge is zero.

(3) Maximum conc. of di-polar ion (Zwitterion) will be present

(4) All of the above

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
 81%
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NEET 2023 - Target Batch - Aryan Raj Singh
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Which of the following amino acid has the lowest iso-electric point?

1. Glycine

2. Alanine

3. Aspartic acid

4. Lysine

Subtopic:  α - Amino Acids, Peptide Bond, Proteins & Structure |
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NEET 2023 - Target Batch - Aryan Raj Singh
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