TMA1 CHM315 carbohydrate chemistry
Question 1. How many carbon atoms are present in pyranose?
Option
A. 5
B. 6
C. 7
D. 8
Answer to this question suppose to A. 5. But if you are a national open university of Nigeria, the answer to the question is B. 6. The issue is that the questionire substitute rings to carbon, of which the question suppose to be: how many rings are present in pyranose?
Question 2. Five and six-membered rings are favoured over other ring size because of their?
Option
A. Conformational structure
B. Better molecular structure
C. low angle and eclipsing strain
D. High angle and eclipsing strain
The answer is C. low angle and eclipse in strain
Question 3. Carbohydrate consist of this element except?
Option
- Carbon
B. Oxygen
C. Zinc
D. Hydrogen
The answer is C. zinc
Question 4. carbohydrate can be classified based on_____?
Option
A. Source
B. Complexity
C. reactivity
D. Size
The answer is A. source
Question 5. one of these is an example of complex carbohydrate?
Option
A. disaccharide
B. Hexose
C. Monosaccharide
D. Pentose
the answer is A. disaccharide
Question 6. Furanose and pyranose are example of?
Option
A. five and six membered ring sugar
B. Example of ketones
C. Example of complex sugar
D. Example of cyclic representation of sugar
The answer is D. example of cyclic representation of sugar
Question 7. An aldose is a sugar having______?
Option
A. Sugar having ketone function
B. Sugar having aldehyde function
C. Solution of aldehyde and sugar
D. Solution of ketone and sugar
The answer is B. sugar having aldehyde function
Question 8. Reducing sugar are the sugar which can react with?
Option
A. Acid
B. Oxygen
C. Hydrogen
D. Toluen reagent
Answer is A. Acids
Question 9. sugar of the same molecular and structural formula but different optical activity are known as_____?
A. Polymer
B. Dimers
C. Monomer
D. Anomer
the answer is D. Anomer
Question 10. How many carbon atoms are there in pentose?
Option
A. 4
B. 5
C. 6
D. 7
The answer is B. 5
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