MCQ Questions for Class 12 Chemistry Chapter 14 Biomolecules Part-1 with Answers

Biomolecules Part-1 Class 12 Chemistry MCQs Questions with Answers

Check the below NCERT MCQ Questions for Class 12 Chemistry Chapter 14 Biomolecules Part-1 with Answers Pdf free download. MCQ Questions for Class 12 Chemistry with Answers were prepared based on the latest exam pattern. We have Provided Biomolecules Part-1 Class 12 Chemistry MCQs Questions with Answers to help students understand the concept very well.

Class 12 Chemistry Chapter 14 Quiz

Class 12 Chemistry Chapter 14 MCQ Online Test

You can refer to NCERT Solutions for Class 12 Chemistry Chapter 14 Biomolecules Part-1 to revise the concepts in the syllabus effectively and improve your chances of securing high marks in your board exams.

Biomolecules Part-1 Class 12 Chemistry MCQ online test

Q1.	During acetylation of glucose it needs ,v moles of.acetic anhydride. The value of x would be
	A.3
	B.5
	C.4
	D.1

Ans: 5

Q2.	On oxidation with a mild oxidising agent like Br₂/H₂0, the glucose is oxidized to
	A.saccharic acid
	B.glucaric acid
	C.gluconic acid
	D.valeric acid

Ans: gluconic acid

Q3.	Invert sugar is
	A.a type of cane sugar
	B.optically inactive form of sugar
	C.mixture of glucose and galactose
	D.mixture of glucose and fructose in equimolar quantities

Ans: mixture of glucose and fructose in equimolar quantities

Q4.	Which of the following compounds is found abundatly in nature?
	A.Fructose
	B.Starch
	C.Glucose
	D.Cellulose

Ans: Starch or (d) Cellulose

Q5.	Glycosidic linkage is an
	A.amide linkage
	B.ester linkage
	C.ether linkage
	D.acetyl linkage

Ans: ether linkage

Q6.	Starch is composed of two polysaccharides which arc
	A.amylopectin and glycogen
	B.amylose and gtycogen
	C.amylose (20%) and amylopectin (80%)
	D.cellulose and glycogen

Ans: amylose (20%) and amylopectin (80%)

Q7.	Which reagent is used to convert glucose into saccharic acid?
	A.Br₂/H₂O
	B.Nitric acid
	C.Alkaline solution of iodine
	D.Ammonium hydroxide

Ans: Nitric acid

Q8.	Maltose is made up of
	A.two α-D-glucose
	B.normal β-D-glucose
	C.α- and β-D-glucose
	D.fructose

Ans: two α-D-glucose

Q9.	What is the basic formulae for starch?
	A.(C₆H₁₂O₆)_n
	B.(C₆H₁₀O₅)_n
	C.C₁₂O₁₂O₁₁
	D.(C₆H₁₂O₄)_n

Ans: (C₆H₁₀O₅)_n

Q10.	Whicn of the following is an example of an aldopentose?
	A.D-Ribose
	B.Glyceraldehyde
	C.Fructose
	D.Erythrose

Ans: D-Ribose

Q11.	Identify Z.
	A.2-lodoheptane
	B.Heptane-2-ol
	C.2-lodohexane
	D.Heptanoic acid

Ans: Heptanoic acid

Q12.	Which of the following treatment will convert starch directly into glucose?
	A.Heating with dilute H₂SO₄
	B.Fermentation by diastase
	C.Fermentation by zymase
	D.Heating with dilute NaOH

Ans: Heating with dilute H₂SO₄

Q13.	The general formula of carbohydrates is
	A.C_nH_2n+1O
	B.C_nH_2nO
	C.C_x(H₂O)
	D.C_n(H₂,O)_2n

Ans: C_x(H₂O)

Q14.	The a-and p-forms of glucose are
	A.isomers of D (+) glucose and L (-) glucose respectively
	B.diastereomers of glucose
	C.anomers of glucose
	D.isomers which differ in the configuration of C-2

Ans: anomers of glucose

Q15.	What are the hydrolysis products of sucrose?
	A.Fructose + Fructose
	B.Glucose + Glucose
	C.Glucose + Galactose
	D.D-Glucose + D-Fructose

Ans: D-Glucose + D-Fructose

Q16.	Carbohydrates are stored in human body as the polysaccharide
	A.starch
	B.glycogen
	C.cellulose
	D.amylose

Ans: glycogen

Q17.	The glycosidic linkage involved in linking the glucose units in amylose part of starch is
	A.C₁-C₄ β-linkage
	B.C₄-C₆ β-linkage
	C.C₁-C₆ α-linkage
	D.C₁-C₄ α-linkage

Ans: C₁-C₄ α-linkage

Q18.	The conversion of maltose into glucose is possible by the enzyme
	A.zymase
	B.lactase
	C.maltase
	D.diastase

Ans: maltase

Q19.	Which of the following is a non-reducing sugar?
	A.Glucose
	B.Sucrose
	C.Maltose
	D.Lactose

Ans: Sucrose

Q20.	Which one of the following is not correct?
	A.D(-) Fructose exist sin furanose structure
	B.D (+) Glucose exists in pyranose structure
	C.In sucrose the two monosaccharides are held together by peptide linkage
	D.Maltose is a reducing sugar