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Test: Carbohydrates - JEE MCQ
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20 Questions MCQ Test Chemistry for JEE Main & Advanced - Test: Carbohydrates
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Detailed Solution for Test: Carbohydrates - Question 1
Test: Carbohydrates - Question 2
Which of the following compounds is a recipient of the one carbon fragments that tetra hydro folate receives and transfers?
Detailed Solution for Test: Carbohydrates - Question 2
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Detailed Solution for Test: Carbohydrates - Question 3
from in which the OH at C1 in aldose and C2 in ketoses lies towards the right and 
form in which it lies towards left. Thus glucose,fructose,ribose,etc.,all exist 
and 
form. Glucose exists in two forms 
-D glucose and 
-D glucose 
As a result of cyclization the anomeric (C-1) becomes asymmetric and the newly formed - OH group may be either on left or on a right in Fischer projections thus resulting in the formation of two isomers (anomers). The isomers having - OH group to the left of the C-1 is designsted 
and other having - OH group on the right as 
.
- glucose is
Detailed Solution for Test: Carbohydrates - Question 4
group at (carbon) C-2, we give D and L configuration. For right side 
-glucose For left side 
L-(-)-glucose
Test: Carbohydrates - Question 5
An organic compound with the formula 
forms a yellow crystalline solid with phenylhydrazine and gives a mixture of sorbitol and mannitol when reduced with sodium. Which among the following could be the compound?
forms a yellow crystalline solid with phenylhydrazine and gives a mixture of sorbitol and mannitol when reduced with sodium. Which among the following could be the compound?
Detailed Solution for Test: Carbohydrates - Question 5
Test: Carbohydrates - Question 6
When 
-D-glucose and 
-D-glucose are dissolved in water in two separate beakers I and II respectively and allowed to stand, then -
-D-glucose and -D-glucose are dissolved in water in two separate beakers I and II respectively and allowed to stand, then -
Detailed Solution for Test: Carbohydrates - Question 6
-D-glucose or 
-D-glucose when dissolved in water and allowed to stand, following equilibrium is established. 
-D-glucose 
Open chain form 
-D-glucose
-form falls, while that of 
-form increases until a constant value of 
is reached at equilibrium. This phenomenon is known as mutarotation.
Test: Carbohydrates - Question 7
Which of the following pairs can be distinguished by Fehling's solution ?
Detailed Solution for Test: Carbohydrates - Question 7
groups (one due to glucose and another due to fructose) are not free, so it can't attain -CHO group. Hence it will not respond Fehling's solution.
Test: Carbohydrates - Question 8
Identify the correct statements from the following:
When 
is hydrolysed, adenine and thymine are obtained in equal quantities.
When 
is hydrolysed, adenine and uracil are obtained in equal quantities.
Amylose is branched polymer with 
and 
glycosidic linkages.
Addison disease is due to the abnormal functioning of adrenal cortex.
When is hydrolysed, adenine and thymine are obtained in equal quantities. When is hydrolysed, adenine and uracil are obtained in equal quantities. Amylose is branched polymer with and glycosidic linkages. Addison disease is due to the abnormal functioning of adrenal cortex.
Detailed Solution for Test: Carbohydrates - Question 8
When 
is hydrolysed, adenine and thymine are obtained in equal quantities.
When 
is hydrolysed, adenine and uracil are obtained in equal quantities.
Amylose is branched polymer with 
and 
glycosidic linkages.
Addison disease is due to the abnormal functioning of adrenal cortex.
Test: Carbohydrates - Question 9
Observe the following statements.
I. Sucrose has glycosidic linkage.
II. Cellulose is present in both plants and animals.
III. Lactose contains D-galactose and D-glucose units.
Which of the following statements are correct?
I. Sucrose has glycosidic linkage.
II. Cellulose is present in both plants and animals.
III. Lactose contains D-galactose and D-glucose units.
Which of the following statements are correct?
Detailed Solution for Test: Carbohydrates - Question 9
Test: Carbohydrates - Question 10
Which of the following carbohydrates is not related to 
-glucose?
-glucose?
Detailed Solution for Test: Carbohydrates - Question 10
.
Test: Carbohydrates - Question 11
Glucose-D has a great tendency to be converted into cyclic isomer. Which two carbon atoms get joined through ' 
' to form this hemiacetal ?
' to form this hemiacetal ?
Detailed Solution for Test: Carbohydrates - Question 11
and 
.
-glucose is
Detailed Solution for Test: Carbohydrates - Question 12
In the 
family the more laevorotatory anomer is named 
Detailed Solution for Test: Carbohydrates - Question 13
epimers, it implies that these are epimers and diastereomers too.
Test: Carbohydrates - Question 14
Which of the following evolves carbon dioxide, on oxidation with periodate?
Detailed Solution for Test: Carbohydrates - Question 14
group on both sides is removed as 
during oxidation with periodate.
Test: Carbohydrates - Question 15
Which of the following carbohydrates has a glycosidic linkage?
Detailed Solution for Test: Carbohydrates - Question 15
glucose residues are joined by a glycosidic linkage between the 
anomeric form of 
on one sugar and the hydroxyl oxygen atom on 
of the adjacent sugar. Such a linkage is called an 
glycosidic bond.
glucose is
Detailed Solution for Test: Carbohydrates - Question 16
- 
-glucose.A chiral carbon has four different groups attached. -D-Glucose has no plane of symmetry, so all the carbon atoms are different. There are five chiral carbons.
Test: Carbohydrates - Question 17
A certain compound gives negative test with ninhydrin and positive test with Benedict's solution. The compound is
Detailed Solution for Test: Carbohydrates - Question 17
+Citrate ions)
Test: Carbohydrates - Question 18
Glucose forms many derivatives. The derivative which will help to prove the furanose structure is
Detailed Solution for Test: Carbohydrates - Question 18
and 
carbon. When both of them react with three molecules of phenylhydrazine, the formation of osazone crystals makes the difference between the carbon atoms in their chain and hence, in such way it helps to prove the fructose structure.
Detailed Solution for Test: Carbohydrates - Question 19
Detailed Solution for Test: Carbohydrates - Question 20
. It is derived by oxidizing a sugar such as glucose with nitric acid.
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