S Chand Solution Class 9 Chemistry. We covered all the S Chand Solution Class 9 Chemistry MCQs in this post for free so that you can practice well for the exam.
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S Chand Solution Class 9 Chemistry Objective for Students
The synthesis of proteins is controlled by
(A) RNA
(B) DNA
(C) Non-sugars
(D) Hormones
Option b – DNA
The structure of the deoxyribonucleic acid molecule is a
(A) Branched-linear
(B) Triple helix
(C) Double helix
(D) Single helix
Option c – Double helix
Which is not a constituent of RNA?
(A) Phosphate
(B) Adenine
(C) Ribose
(D) Pyridine
Option d – Pyridine
Heredity is controlled by
(A) Enzymes
(B) Lipids
(C) Sugars
(D) Nucleic acids
Option d – Nucleic acids
Which is the backbone of nucleic acid
(A) Vitamin
(B) Polyamide
(C) Lipid
(D) Polynucleotide
Option d – Polynucleotide
A base-sugar-phosphoric acid unit is called
(A) Protein enzyme
(B) Enzyme protein
(C) Nucleotide
(D) Nucleoside
Option c – Nucleotide
A base-sugar unit is called
(A) Carbohydrate
(B) Nucleotide
(C) Nucleoside
(D) Protein-α-amino acid
Option c – Nucleotide
The bases present in nucleic acids are
(A) Aromatic amines
(B) Aromatic amides
(C) Caustic soda, baking soda
(D) Pyrimidines, purines
Option d – Pyrimidines, purines
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