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A, B, C and D are four artificial sweetn...

A, B, C and D are four artificial sweetners.
(i) A and D give positive test with ninhydrin.
(ii) C form precipitate with `AgNO_3` in the lassaigne extract of the sugar. (iii) B and D give positive test with sodium nitroprusside.
Correct option is:

A

A - Saccharine, B - Aspartame, C - Sucralose, D - Alitame

B

A - Aspartame, B - Saccharine, C - Sucralose, D - Alitame

C

A - Saccharine, B - Aspartame, C - Alitame , D - Sucralose

D

A – Aspartame, B – Sucralose, C – Saccharine, D – Alitame

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem regarding the identification of the artificial sweeteners A, B, C, and D based on the given tests, we will analyze each statement step by step. ### Step 1: Analyze the first statement **Statement:** A and D give positive tests with ninhydrin. **Explanation:** Ninhydrin is a reagent that reacts with amino acids and proteins, indicating the presence of amino groups (NH2). Therefore, both A and D must contain amino groups or be amino acids themselves. ### Step 2: Analyze the second statement **Statement:** C forms a precipitate with AgNO3 in the Lassaigne extract of the sugar. **Explanation:** The formation of a precipitate with AgNO3 indicates the presence of halogens (like Cl, Br, or I) in compound C. This suggests that C is likely a compound that contains a halogen atom. ### Step 3: Analyze the third statement **Statement:** B and D give positive tests with sodium nitroprusside. **Explanation:** Sodium nitroprusside is used to test for the presence of thiol groups (–SH). Therefore, both B and D must contain sulfur atoms. ### Step 4: Identify the compounds Based on the statements, we can deduce the following: 1. **A and D:** Both must contain amino groups (positive ninhydrin test). 2. **C:** Must contain a halogen (positive AgNO3 test). 3. **B and D:** Both must contain sulfur (positive sodium nitroprusside test). ### Step 5: Assign the compounds Now we can assign the sweeteners based on known structures: - **A:** Saccharin (contains NH2 and gives a positive ninhydrin test) - **B:** Aspartame (contains sulfur and gives a positive sodium nitroprusside test) - **C:** Sucralose (contains chlorine, hence gives a precipitate with AgNO3) - **D:** LIT (contains NH2 and gives a positive ninhydrin test) ### Conclusion Based on the analysis: - A = Saccharin - B = Aspartame - C = Sucralose - D = LIT The correct option is **B**. ---
To solve the problem regarding the identification of the artificial sweeteners A, B, C, and D based on the given tests, we will analyze each statement step by step. ### Step 1: Analyze the first statement **Statement:** A and D give positive tests with ninhydrin. **Explanation:** Ninhydrin is a reagent that reacts with amino acids and proteins, indicating the presence of amino groups (NH2). Therefore, both A and D must contain amino groups or be amino acids themselves. ...
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