Q. What is the general formula for carbohydrates?
A.
C_n(H2O)_n
B.
C_nH_nO_n
C.
C_nH_2nO_n
D.
C_nH_2O_n
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Solution
The general formula for carbohydrates is C_n(H2O)_n, indicating that they are hydrates of carbon.
Correct Answer:
A
— C_n(H2O)_n
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Q. What is the main function of carbohydrates in living organisms?
A.
Genetic information
B.
Energy storage
C.
Catalysis
D.
Structural support
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Solution
The main function of carbohydrates is energy storage and providing energy to living organisms.
Correct Answer:
B
— Energy storage
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Q. What is the main storage form of carbohydrates in animals?
A.
Starch
B.
Glycogen
C.
Cellulose
D.
Chitin
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Solution
Glycogen is the main storage form of carbohydrates in animals, while starch is the storage form in plants.
Correct Answer:
B
— Glycogen
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Q. What is the main structural component of plant cell walls?
A.
Starch
B.
Glycogen
C.
Cellulose
D.
Chitin
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Solution
Cellulose is the main structural component of plant cell walls.
Correct Answer:
C
— Cellulose
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Q. What is the molecular formula of fructose?
A.
C6H12O6
B.
C5H10O5
C.
C6H10O5
D.
C5H12O6
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Solution
Fructose has the same molecular formula as glucose, which is C6H12O6.
Correct Answer:
A
— C6H12O6
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Q. What is the primary function of carbohydrates in living organisms?
A.
Energy storage
B.
Genetic information
C.
Catalysis
D.
Structural support
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Solution
Carbohydrates primarily serve as a source of energy in living organisms.
Correct Answer:
A
— Energy storage
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Q. What is the primary storage form of carbohydrates in animals?
A.
Starch
B.
Glycogen
C.
Cellulose
D.
Chitin
Show solution
Solution
Glycogen is the primary storage form of carbohydrates in animals.
Correct Answer:
B
— Glycogen
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Q. What is the primary structural component of plant cell walls?
A.
Starch
B.
Glycogen
C.
Cellulose
D.
Chitin
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Solution
Cellulose is the primary structural component of plant cell walls, providing rigidity and strength.
Correct Answer:
C
— Cellulose
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Q. What is the simplest form of carbohydrate?
A.
Disaccharide
B.
Monosaccharide
C.
Polysaccharide
D.
Oligosaccharide
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Solution
The simplest form of carbohydrate is a monosaccharide, which cannot be hydrolyzed into simpler sugars.
Correct Answer:
B
— Monosaccharide
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Q. What type of bond links monosaccharides in a disaccharide?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Van der Waals bond
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Solution
Monosaccharides in a disaccharide are linked by a covalent bond known as a glycosidic bond.
Correct Answer:
B
— Covalent bond
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Q. What type of bond links monosaccharides in polysaccharides?
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Van der Waals forces
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Solution
Monosaccharides are linked by glycosidic bonds, which are a type of covalent bond.
Correct Answer:
B
— Covalent bond
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Q. What type of carbohydrate is starch?
A.
Monosaccharide
B.
Disaccharide
C.
Oligosaccharide
D.
Polysaccharide
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Solution
Starch is classified as a polysaccharide, consisting of many glucose units.
Correct Answer:
D
— Polysaccharide
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Q. What type of carbohydrate is sucrose?
A.
Monosaccharide
B.
Disaccharide
C.
Oligosaccharide
D.
Polysaccharide
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Solution
Sucrose is a disaccharide composed of glucose and fructose.
Correct Answer:
B
— Disaccharide
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Q. Which carbohydrate is a structural component of plant cell walls?
A.
Starch
B.
Glycogen
C.
Cellulose
D.
Fructose
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Solution
Cellulose is a polysaccharide that provides structural support in plant cell walls.
Correct Answer:
C
— Cellulose
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Q. Which carbohydrate is commonly used as a sweetener?
A.
Lactose
B.
Maltose
C.
Fructose
D.
Cellulose
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Solution
Fructose is commonly used as a sweetener due to its high sweetness level.
Correct Answer:
C
— Fructose
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Q. Which carbohydrate is found in milk?
A.
Lactose
B.
Maltose
C.
Glucose
D.
Fructose
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Solution
Lactose is the sugar found in milk, composed of glucose and galactose.
Correct Answer:
A
— Lactose
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Q. Which carbohydrate is found in the structure of DNA?
A.
Glucose
B.
Ribose
C.
Fructose
D.
Mannose
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Solution
Ribose is the sugar component of RNA, while deoxyribose is found in DNA.
Correct Answer:
B
— Ribose
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Q. Which carbohydrate is known as blood sugar?
A.
Galactose
B.
Fructose
C.
Glucose
D.
Ribose
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Solution
Glucose is commonly referred to as blood sugar as it is the primary energy source for the body's cells.
Correct Answer:
C
— Glucose
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Q. Which carbohydrate is primarily stored in animal liver and muscle?
A.
Cellulose
B.
Starch
C.
Glycogen
D.
Fructose
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Solution
Glycogen is the carbohydrate primarily stored in animal liver and muscle as a form of energy reserve.
Correct Answer:
C
— Glycogen
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Q. Which enzyme breaks down starch into glucose?
A.
Amylase
B.
Lactase
C.
Sucrase
D.
Cellulase
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Solution
Amylase is the enzyme that catalyzes the hydrolysis of starch into glucose.
Correct Answer:
A
— Amylase
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Q. Which enzyme is responsible for the hydrolysis of starch?
A.
Amylase
B.
Cellulase
C.
Lactase
D.
Maltase
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Solution
Amylase is the enzyme that catalyzes the hydrolysis of starch into sugars.
Correct Answer:
A
— Amylase
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Q. Which of the following carbohydrates is a disaccharide?
A.
Maltose
B.
Ribose
C.
Cellulose
D.
Glycogen
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Solution
Maltose is a disaccharide formed from two glucose units.
Correct Answer:
A
— Maltose
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Q. Which of the following carbohydrates is a ketose?
A.
Glucose
B.
Fructose
C.
Galactose
D.
Mannose
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Solution
Fructose is a ketose sugar, while glucose and galactose are aldoses.
Correct Answer:
B
— Fructose
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Q. Which of the following carbohydrates is a reducing sugar?
A.
Fructose
B.
Sucrose
C.
Maltose
D.
Cellulose
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Solution
Maltose is a reducing sugar because it has a free aldehyde or ketone group, while sucrose does not.
Correct Answer:
C
— Maltose
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Q. Which of the following carbohydrates is not digestible by humans?
A.
Starch
B.
Glycogen
C.
Cellulose
D.
Maltose
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Solution
Cellulose is not digestible by humans due to the lack of enzymes to break it down.
Correct Answer:
C
— Cellulose
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Q. Which of the following is a characteristic of carbohydrates?
A.
High energy density
B.
Soluble in organic solvents
C.
Hydrophilic nature
D.
Insoluble in water
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Solution
Carbohydrates are generally hydrophilic, meaning they are soluble in water.
Correct Answer:
C
— Hydrophilic nature
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Q. Which of the following is a characteristic of cellulose?
A.
Soluble in water
B.
Composed of glucose units
C.
Used for energy storage
D.
Contains α-1,4 glycosidic bonds
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Solution
Cellulose is composed of glucose units linked by β-1,4 glycosidic bonds and is not soluble in water.
Correct Answer:
B
— Composed of glucose units
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Q. Which of the following is a characteristic of starch?
A.
Soluble in water
B.
Linear structure
C.
Branched structure
D.
Sweet taste
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Solution
Starch has a branched structure, which allows it to store energy efficiently.
Correct Answer:
C
— Branched structure
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Q. Which of the following is a polysaccharide?
A.
Glucose
B.
Fructose
C.
Cellulose
D.
Galactose
Show solution
Solution
Cellulose is a polysaccharide made up of long chains of glucose units.
Correct Answer:
C
— Cellulose
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Q. Which of the following is a reducing sugar?
A.
Fructose
B.
Sucrose
C.
Starch
D.
Cellulose
Show solution
Solution
Fructose is a reducing sugar, while sucrose, starch, and cellulose are not.
Correct Answer:
A
— Fructose
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Showing 1 to 30 of 33 (2 Pages)
Carbohydrates MCQ & Objective Questions
Understanding carbohydrates is essential for students preparing for school exams and competitive tests. Carbohydrates are a fundamental part of our diet and play a crucial role in various biological processes. Practicing MCQs and objective questions on carbohydrates helps reinforce concepts, improve retention, and ultimately leads to better scores in exams. Engaging with practice questions allows students to familiarize themselves with the exam format and identify important questions that frequently appear in assessments.
What You Will Practise Here
Definition and classification of carbohydrates
Monosaccharides, disaccharides, and polysaccharides
Functions of carbohydrates in living organisms
Biochemical pathways involving carbohydrates
Common tests for carbohydrate identification
Important formulas related to carbohydrate metabolism
Diagrams illustrating carbohydrate structures
Exam Relevance
Carbohydrates are a significant topic in various educational boards, including CBSE and State Boards, as well as competitive exams like NEET and JEE. Questions related to carbohydrates often appear in the form of multiple-choice questions (MCQs) and objective questions. Students can expect to encounter questions that test their understanding of carbohydrate structures, functions, and biochemical processes. Familiarity with common question patterns, such as identifying types of carbohydrates or explaining their roles in metabolism, will greatly enhance exam performance.
Common Mistakes Students Make
Confusing different types of carbohydrates, such as distinguishing between monosaccharides and polysaccharides.
Overlooking the importance of carbohydrate functions in biological systems.
Misunderstanding biochemical pathways related to carbohydrate metabolism.
Neglecting to memorize key definitions and formulas associated with carbohydrates.
FAQs
Question: What are carbohydrates?Answer: Carbohydrates are organic compounds made up of carbon, hydrogen, and oxygen, and they serve as a primary energy source for the body.
Question: How are carbohydrates classified?Answer: Carbohydrates are classified into three main categories: monosaccharides, disaccharides, and polysaccharides.
Ready to boost your understanding of carbohydrates? Dive into our practice MCQs and test your knowledge today! Mastering these important carbohydrates questions for exams will set you on the path to success.
