Carbohydrate

Q.

What is the biological importance of carbohydrates?

Q.

What is the biological significance of carbohydrates?

Q. The rate of the reaction, 2A + B = products is given by the rate expression rate = k[A]1.5 [B]0.5. If A is 2 molar and B is 100 molar then the order of reaction will be

Q.

What are Carbohydrates and how are they Classified?

Q. The artificial sweetener that has the highest sweetness value in comparison to cane sugar is :

1. Alitame
2. Sucralose
3. Saccharin
4. Aspartane

Q.

What is the difference between carbohydrates and fats?

Q.

Describe the digestion of nucleic acid.

Q. Which of the following compound can not reduce Tollen's reagent?

1. Maltose
2. $C{H}_{3}COC{H}_3$
3. Nitrobenzene
4. Lactose

Q.

What are the expected products of hydrolysis of lactose?

Q. Which is not true for reducing and non reducing sugars?

1. Sucrose is a non reducing sugar, as linkage involves the carbonyl functional group of both monosaccharides units
2. Maltose and Lactose are reducing sugar, as one of the carbonyl functional group in any one of the monosaccharides unit is free
3. Maltose is reducing sugar while lactose and sucrose both are non reducing sugar
4. Both depends on the position of linkage between two monosaccharides unit

Q. 1 if the initial concentration of reactant is doubled, the time for half reaction is also doubled, then calculate the order of reaction

Q.

Are enzymes carbohydrates?

Q. Which of the following will increase the rate of the reaction?

1. Addition of negative catalyst
2. Increasing reactant concentration
3. Cooling the reaction
4. None of the above

Q. convert methyl cyanide to methyl isocyanide

Q. Carbohydrates in animals are stored in the form of:

1. Starch
2. Glycogen
3. Both starch and glycogen
4. None of the above

Q.

Assertion: Arachidic acid is an unsaturated fatty acid.
Reason: There are one or more double bonds between carbon atoms in unsaturated fatty acids.

1. Both assertion and reason are true and the reason is the correct explanation for assertion.
2. Both assertion and reason are true but the reason is not the correct explanation for the assertion.
3. Assertion is true but the reason is false.
4. Both Assertion and Reason are false.

Q. Explain the importance of carbohydrates.

Q. Define carbohydrates. What are reducing and non-reducing sugars?

Q. The following carbohydrate is

(IIT-JEE, 2011)

1. a ketohexose
2. an aldohexose
3. an $\alpha$ - furanose
4. an $\alpha$ - pyranose

Q.

A, B and C are three biomolecules. The results of the tests performed on them are given below:

	Molisch’s Test	Barfoed Test	Biuret Test
A	Positive	Negative	Negative
B	Positive	Positive	Negative
C	Negative	Negative	Positive

A, B and C are respectively

1. A = Lactose B = Glucose C = Albumin

2. A = Lactose B = Glucose C = Alanine

3. A = Lactose B = Fructose C = Alanine

4. A = Glucose B = Sucrose C = Albumin

Q. Artificial sweetener, which is stable under cold conditions only, is:

1. Saccharine
2. Sucralose
3. Aspartame
4. Alitame

Q. explain :if fecl3is added to excess of hot water, why a positively charged sol of hydrated ferric oxide is formed due to adsorption of fe3+ and if fecl3 is added to naoh solution, why a negatively charged sol is formed due to adsorption of oh-

Q.

What type of point defect are produced when AgCl is doped with CdCl₂

Q.

Which one of the following is not artificial sweetening agent?

1. Sucrose

2. Sucrolose

3. Aspartame

4. Alitame

Q. Which of the following compound can not reduce Tollen's reagent?

1. Maltose
2. $C{H}_{3}COC{H}_3$
3. Nitrobenzene
4. Lactose

Q.

Which of the following is a test for proteins?

1. Biuret Test

2. Iodine Test

3. Emulsion test

4. None of the above

Q.

Carbohydrates are essential for life in both plants and animals. Name the carbohydrates that are used as storae molecules in plants and animals, also name the carbohydrate which is present in wood or in the fibre of cotton cloth.

Q.

Carbohydrates are energy giving food of the body

1. True
2. False

Q.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.
(a) Assertion and reason both are correct statements and reason explains the assertion.
(b) Both assertion and reason are wrong statements.
(c) Assertion is correct statement and reason is wrong statement.
(d) Assertion is wrong statement and reason is correct statement.
(e) Assertion and reason both are correct statements but reason does not explain assertion.
Assertion (A) Deoxyribose, $C_5{H}_{10}{O}_4$ is not a carbohydrate.
Reason (R) Carbohydrates are hydrates of carbon so compounds which follow $C_x(H_{2}O{)}_y$ formula are carbohydrates.

Q. Write a note on significance of carbohydrates.