Class 12 Chemistry Chapter 10 Biomolecules MCQ: On this page we have given Class 12 Chemistry Chapter 10 Biomolecules Multiple Choice (MCQ) Question and Answer for students of CBSE board. Students will very much helpful for this question and answer.
Biomolecules Class 12 MCQ with Answers:
(1) Which one are the correct example of carbohydrates?
(a) Cane sugar
(b) Starch
(c) Glucose
(d) All of the above
Ans: (d) All of the above
(2) What is the correct general formula for carbohydrates?
(a) CxHyOy
(b) Cx(H2O)
(c) Cx(H2O)y
(d) Cx(H2O)2
Ans: (c) Cx(H2O)y
(3) Carbohydrates arc also called as –
(a) Hydrides
(b) Saccharides
(c) Maltose
(d) Fructose
Ans: (b) Saccharides
(4) Carbohydrates that yield two to ten monosaccride units, on hydrolysis, are called as –
(a) Polysaccrides
(b) Disoccride
(c) Oligosaccharides
(d) Trisaccharides
Ans: (c) Oligosaccharides
(5) Carbohydrates which yields a large number of monosaccharides units on hydrolysis are called as –
(a) Discaccharides
(b) Oligosaccharides
(c) Trisaccharides
(d) Polysaccharides
Ans: (d) Polysaccharides
(6) Polysaccharides also called as –
(a) Sugar
(b) Non-sugar
(c) Ketose
(d) Aldose
Ans: (b) Non-sugar
(7) Which one is the reffered to as reducing sugars?
(a) Fehling’s solution
(b) Tolken’s reagents
(c) Aldose
(d) Both a and b
Ans: (d) Both a and b
(8) If a monosaccharides contains an aldehyde group it is known as –
(a) Aldose
(b) Ketose
(c) Triose
(d) Pentose
Ans: (a) Aldose
(9) If a monosaccharides contains an keto group, it is known as –
(a) Aldose
(b) Ketose
(c) Pentose
(d) Tetrose
Ans: (b) Ketose
(10) (C6H10O5)n + nH2O PHOTO
(a) nC6H12O6
(b) nC6H10O5
(c) nC5H10O5
(d) C5H12O6
Ans: (a) nC6H12O6
(11) Glucose is an aldohexose and is also known as –
(a) triose
(b) tetrose
(c) heptose
(d) dextrose
Ans: (d) dextrose
(12)
(15) What is the melting point of α-form of glucose?
(a) 400K
(b) 315K
(c) 419K
(d) 475k
Ans: (c) 419K
(16) What is the melting point of β-form of glucose?
(a) 423K
(b) 315K
(c) 400K
(d) 450K
Ans: (a) 423K
(17) The two cyclic hemiacetal forms of glucose differ only in the configuration of the hydroxyl group at —- called as –
(a) Diomeric carbon
(b) Anomeric carbon
(c) Monomeric carbon
(d) Triomeric carbon
Ans: (b) Anomeric carbon
(18) α-form and β-form, are called as –
(a) Biomers
(b) Anomers
(c) Diomers
(d) Trimers
Ans: (b) Anomers
(19) The six membered cyclic structur of glucose is called –
(a) Pentose structure
(b) Pyranose structure
(c) Heptonose structure
(d) Pyran
Ans: (b) Pyranose structure
(20) Which one is the important ketoherose?
(a) Fructose
(b) Sucrose
(c) maltose
(d) Both a and b
Ans: (d) Both a and b
(21) What is molecular formula of fructose?
(a) C5H12O5
(b) C5H10O6
(c) C6H12O6
(d) C6H12O5
Ans: (c) C6H12O6
(22) The two monosaccharides are joined together by an oxide linkage formed by the loss of a water molecule, such a linkage between two monosaccharide units through oxygen atom is called as –
(a) Glycogen linkage
(b) Glycosidic linkage
(c) Fructose linkage
(d) Sucrose linkage
Ans: (b) Glycosidic linkage
(23) Which products named as invert sugar?
(a) Dextro
(b) Laevo
(c) Gluco
(d) Both a and b
Ans: (d) Both a and b
(24) Which one is known as milk sugar?
(a) Sucrose
(b) Maltose
(c) Lactose
(d) Glucose
Ans: (c) Lactose
(25) Which is the main storage of polysaccharides of plants?
(a) Starch
(b) Maltose
(c) Cellulose
(d) Glycogen
Ans: (a) Starch
(26) Where is found the content of starch?
(a) Cereals
(b) Vegetables
(c) Roots
(d) All of the above
Ans: (d) All of the above
(27) What is the polymer of starch?
(a) α-glucose
(b) β-glucose
(c) Amylose
(d) Amylopectin
Ans: (a) α-glucose
(28) How much percent of constitues of starch in amylose?
(a) 15-20%
(b) 80-85%
(c) 50-65%
(d) 40-45%
Ans: (a) 15-20%
(29) How much percent of constitues of starch in Amylopectin?
(a) 15-20%
(b) 80-85%
(c) 60-85%
(d) 70-80%
Ans: (b) 80-85%
(30) Which one is the most abundant organic substance in plant kingdom?
(a) Cellulose
(b) Starch
(c) Glucose
(d) Glycogen
Ans: (a) Cellulose
(31) Glycogen is also known as –
(a) Plant starch
(b) Animal starch
(c) Glucose
(d) Proteios
Ans: (b) Animal starch
(32) Which one is the correct three letter symbol of isoleucine?
(a) Iso
(b) Ilu
(c) Ile
(d) Ilc
Ans: (c) Ile
(33) Which one is the correct three letter symbol of Asparagine?
(a) Asp
(b) Asg
(c) Asa
(d) Asn
Ans: (d) Asn
(34) Which one is the correct three letter symbol of Glutamine?
(a) Glu
(b) Glt
(c) Gln
(d) Glm
Ans: (c) Gln
(35) What is the characteristics feature of side chain (R) of serine?
(a) OH – OH
(b) HO – CH2 –
(c) HS – CH2 –
(d) – CH2 – CH2 –
Ans: (b) HO – CH2 –
(36) What is the characteristics feature of side chain (R) of Cysteine?
(a) –HO-CH2
(b) HS – CH2 –
(c) – CH2 – CH2
(d) H2N – CH2 –
Ans: (b) HS – CH2 –
(37) What is the one letter code of lysine?
(a) 1
(b) K
(c) S
(d) I
Ans: (b) K
(38) What is the one letter code of Tyrosine?
(a) T
(b) Y
(c) S
(d) N
Ans: (b) Y
(39) The amino acids, which can be systhesised in the body, are known as –
(a) Non-essential amino acids
(b) Essential amino acids
(c) Amino acids
(d) Both a and b
Ans: (a) Non-essential amino acids
(40) How many types of protein classified on the basis of their molecular shape?
(a) 2
(b) 3
(c) 4
(d) 5
Ans: (a) 2
(41) Which is the example of fibrous proteins?
(a) Keratin
(b) Myosin
(c) Insulin
(d) Both a and b
Ans: (d) Both a and b
(42) Which is the example of globular proteins?
(a) Insulin
(b) Albumins
(c) Myosin
(d) Both a and b
Ans: (d) Both a and b
(43) The spatial arrangement of these subunits with respect to each other is known as –
(a) Primary structure
(b) Secondary structure
(c) Tertiary structure
(d) Quternary structure
Ans: (d) Quternary structure
(44) Protein found in a biological system with a unique three-dimensional structure and biological activity is called a –
(a) Native protein
(b) Denaturation
(c) Naturation
(d) Coagulation
Ans: (a) Native protein
(45) C12H22O11 Photo
(a) Glucose
(b) Fructose
(c) Sucrose
(d) Amylase
Ans: (a) Glucose
(46) What sources of vitamin A?
(a) Fish liver oil
(b) Carrot
(c) Butter
(d) All of the above
Ans: (d) All of the above
(47) What source of vitamin B1?
(a) Yeast
(b) Milk
(c) Fish liver oil
(d) Both a and b
Ans: (d) Both a and b
(48) What is the another name of vitamin B1?
(a) Riboflaxin
(b) Thiamine
(c) Pyridoxine
(d) Ascorbic acid
Ans: (b) Thiamine
(49) What is the another name of vitamin B6?
(a) Riboflaxin
(b) Thiamine
(c) Pyridoxine
(d) Ascorbic acid
Ans: (c) Pyridoxine
(50) What is the another name of vitamin C?
(a) Riboflaxin
(b) Thiamine
(c) Pyridoxine
(d) Ascorbic acid
Ans: (d) Ascorbic acid
(51) What is the sources of vitamin B12?
(a) Fish
(b) meat
(c) egg
(d) All of the above
Ans: (d) All of the above
(54) What is the another name of vitamin B2
(a) Thiamine
(b) Riboflavin
(c) Pyridoxine
(d) Ascorbic acid
Ans: (b) Riboflavin
(55) What is the source of vitamin B6
(a) Yeast
(b) Milk
(c) Egg yolk
(d) All of the above
Ans: (d) All of the above
