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Chemistry M.C.Q (1 Marks)

Biomolecules · CBSE STD 12 Science (CBSE - English Medium). 31 questions.

Questions

M.C.Q (1 Marks)

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31 questions · auto-graded multiple-choice test.

MCQ 21 Mark
Glucose is :
  • A
    An aldopentose
  • ✓
    A ketopentose
  • C
    An aldehexose
  • D
    A ketohexose
Answer
Correct option: B.
A ketopentose
b
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MCQ 41 Mark
Which nitrogenous base is not found in DNA?
  • A
    Adenine
  • B
    Cytosine
  • C
    Guanine
  • ✓
    Uracil
Answer
Correct option: D.
Uracil
d
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MCQ 51 Mark
An important vitamin which is soluble in oil and fat and insoluble in water. It is responsible for rickets in children and Osteomalacia in adults. This vitamin is :
  • A
    Vitamin $B _{12}$
  • B
    Vitamin C
  • ✓
    Vitamin D
  • D
    Vitamin E
Answer
Correct option: C.
Vitamin D
c
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MCQ 61 Mark
Complete hydrolysis of DNA gives pentose sugar, deoxyribose. Deoxyribose differs from ribose is not having an - OH group on :
  • A
    C - 1
  • ✓
    C - 2
  • C
    C - 3
  • D
    C - 4
Answer
Correct option: B.
C - 2
b
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MCQ 71 Mark
What is tested in the urine of a diabetes patient?
  • ✓
    Glucose
  • B
    Fructose
  • C
    Sucrose
  • D
    All of these
Answer
Correct option: A.
Glucose
a
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MCQ 81 Mark
Which bond is found in globular protein?
  • A
    Hydrogen bond
  • B
    Van der Waals force of attraction
  • C
    Disulphide bond
  • ✓
    All of the above
Answer
Correct option: D.
All of the above
d
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MCQ 91 Mark
Which of the following is water soluble vitamin?
  • A
    Vitamin D
  • ✓
    Vitamin C
  • C
    Vitamin E
  • D
    Vitamin A
Answer
Correct option: B.
Vitamin C
b
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MCQ 101 Mark
Which of the following compound does not exist in the form of Zwitter ion?
  • A
    Alanine
  • B
    Glycine
  • C
    Sulphanilic acid
  • ✓
    p-amino benzoic acid
Answer
Correct option: D.
p-amino benzoic acid
d
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MCQ 111 Mark
Which of the following is not hydrolysed by the human digestive system?
  • A
    Glycogen
  • ✓
    Cellulose
  • C
    Maltose
  • D
    Starch
Answer
Correct option: B.
Cellulose
b
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MCQ 131 Mark
Glucose is formed by hydrolysis of maltose. The enzymes used in this reaction is:
  • A
    Invertase
  • B
    Zymase
  • ✓
    Maltase
  • D
    Urease
Answer
Correct option: C.
Maltase
c
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MCQ 141 Mark
What are the major bonds in the tertiary structure of proteins that provide stability to the $2^{\circ}$ and $3^{\circ}$ structure?
  • A
    Hydrogen bond
  • B
    Disulphide bond
  • C
    Electrostatic force of attraction
  • ✓
    All of the above
Answer
Correct option: D.
All of the above
d
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MCQ 151 Mark
Which of the following is an essential amino acid?
  • A
    Alanine
  • B
    Glycine
  • ✓
    Valine
  • D
    Aspartic acid
Answer
Correct option: C.
Valine
c
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MCQ 161 Mark
Carbohydrates in animals are stored in the form of :
  • A
    Starch
  • B
    Cellulose
  • ✓
    Glycogen
  • D
    Maltose
Answer
Correct option: C.
Glycogen
c
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MCQ 181 Mark
The acid formed by oxidising glucose with bromine water is :
  • A
    Glycolic acid
  • B
    Saccharic acid
  • ✓
    Gluconic acid
  • D
    Glyceric acid
Answer
Correct option: C.
Gluconic acid
c
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MCQ 191 Mark
Which of the following is responsible for controlling the genetic properties of the cell :
  • A
    RNA
  • B
    Protein
  • ✓
    DNA
  • D
    Vitamin
Answer
Correct option: C.
DNA
c
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MCQ 201 Mark
Which of the following is not a disaccharide?
  • A
    Sucrose
  • ✓
    Galactose
  • C
    Fructose
  • D
    Maltose
Answer
Correct option: B.
Galactose
b
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MCQ 211 Mark
Among the sugar mentioned below, name the sweetest one :
  • A
    Glucose
  • B
    Lactose
  • ✓
    Fructose
  • D
    Sucrose
Answer
Correct option: C.
Fructose
c
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MCQ 231 Mark
In which of the following nitrogen is invariably present?
  • A
    Fat
  • B
    Carbohydrate
  • ✓
    Protein
  • D
    Starch
Answer
Correct option: C.
Protein
c
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MCQ 241 Mark
The end formed between the interaction of two amino acid is:
  • A
    Ionic bond
  • B
    Glycosidic bond
  • C
    Hydrogen bond
  • ✓
    Peptide bond
Answer
Correct option: D.
Peptide bond
d
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MCQ 251 Mark
Night blindness is caused by deficiency of which vitamin?
  • A
    $B_6$​​​​​​​
  • ✓
    $A$
  • C
    $C$
  • D
    $D$
Answer
Correct option: B.
$A$
$A$
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MCQ 271 Mark
Which of the following bases is not present in DNA?
  • A
    Adenine
  • ✓
    Uracil
  • C
    Thiamine
  • D
    Cytosine
Answer
Correct option: B.
Uracil
b
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MCQ 301 Mark
Which of the following is a reducing sugar:
  • A
    Starch
  • B
    Cellulose
  • ✓
    Lactose
  • D
    Sucrose
Answer
Correct option: C.
Lactose
c
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M.C.Q (1 Marks) - Chemistry STD 12 Science Questions - Vidyadip