MCQOPTIONS
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MCQOPTIONS
This section includes 12 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The D in D-(+)-glucose represents its dextrorotatory behaviour. |
| A. | True |
| B. | False |
| Answer» C. | |
| 2. |
The reaction of glucose with NH2OH gives _______ |
| A. | n-hexane |
| B. | glucose oxime |
| C. | glucose cyanohydrin |
| D. | a gluconic acid |
| Answer» C. glucose cyanohydrin | |
| 3. |
Glyceraldehyde is a carbohydrate. |
| A. | True |
| B. | False |
| Answer» B. False | |
| 4. |
The reaction of glucose with acetic anhydride conforms the presence of how many hydroxy groups in glucose? |
| A. | 3 |
| B. | 4 |
| C. | 5 |
| D. | 6 |
| Answer» D. 6 | |
| 5. |
The reaction of glucose with hydrogen cyanide confirms the ______ |
| A. | straight chain structure of glucose |
| B. | presence of a carbonyl group in glucose |
| C. | presence of an aldehyde group in glucose |
| D. | presence of a keto group in glucose |
| Answer» C. presence of an aldehyde group in glucose | |
| 6. |
Glucose on Fehling s test gives ______ |
| A. | no reaction |
| B. | silver mirror |
| C. | red precipitate |
| D. | pungent gas |
| Answer» D. pungent gas | |
| 7. |
The reaction of glucose with which of the following proves the presence of an aldehydic group? |
| A. | Potassium iodide |
| B. | Hydroxylamine |
| C. | Bromine water |
| D. | Acetic anhydride |
| Answer» D. Acetic anhydride | |
| 8. |
Glucose is prepared commercially from the hydrolysis of ______ by boiling it with dilute H2SO4 at 393K under pressure. |
| A. | starch |
| B. | sucrose |
| C. | galactose |
| D. | dextrose |
| Answer» B. sucrose | |
| 9. |
Identify from the following pairs, a pair of aldoses. |
| A. | Sorbose, allose |
| B. | Mannose, tagatose |
| C. | Psicose, gulose |
| D. | Talose, idose |
| Answer» E. | |
| 10. |
Erythrulose is a/an _______ |
| A. | aldotetrose |
| B. | aldoheptose |
| C. | ketotetrose |
| D. | ketoheptose |
| Answer» D. ketoheptose | |
| 11. |
Identify the aldose form the following. |
| A. | Arabinose |
| B. | Xylulose |
| C. | Ribulose |
| D. | Sorbose |
| Answer» B. Xylulose | |
| 12. |
Which of the following monosaccharides is a ketohexose? |
| A. | Glucose |
| B. | Galactose |
| C. | Fructose |
| D. | Mannose |
| Answer» D. Mannose | |