Bharti Bhawan Chemistry Class 10. We covered all the Bharti Bhawan Chemistry Class 10 MCQs in this post for free so that you can practice well for the exam.
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Bharti Bhawan Chemistry Class 10 Objective for Students
In fructose, the possible optical isomers are:
(A) 15
(B) 16
(C) 4
(D) 8
Option d – 8
Which of the following is the sweetest sugar? ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Lactose
(B) Sucrose
(C) Fructose
(D) Glucose
Option c – Fructose
Starch is mainly present in:
(A) Roots
(B) Corns
(C) Potatoes
(D) All of these
Option d – All of these
The sugar present in milk is called ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Maltose
(B) Sucrose
(C) Lactose
(D) Proteins
Option d – Proteins
Indigestible carbohydrate which is also a constituent of our diet:
(A) Sucrose
(B) Maltose
(C) Cellulose
(D) Galactose
Option c – Cellulose
Blood sugar is the same as ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Glycogen
(B) Fructose
(C) Galactose
(D) Glucose
Option d – Glucose
After digestion, milk sugar changes to:
(A) Glucose
(B) Lactose
(C) Fructose
(D) Cellulose
Option a – Glucose
The calorific value is maximum in the case of ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Milk
(B) Proteins
(C) Carbohydrates
(D) Minerals
Option c – Carbohydrates
All monosaccharides ………… Tollen’s reagent.
(A) Reduce
(B) Condense
(C) Oxidise
(D) Eliminate
Option a – Reduce
Which one of the following is a chain-growth polymer? ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Starch
(B) Nucleic acid
(C) Polystyrene
(D) Protein
Option c – Polystyrene
Cellulose is a polymer of:
(A) Glucose
(B) Fructose
(C) Ribose
(D) Sucrose
Option a – Glucose
Which one of the following statements is not true? ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) In vulcanization, the formation of sulfur bridges between different chains makes rubber harder and stronger.
(B) Natural rubber has the trans-configuration at every double bond.
(C) Buna-S is a co-polymer of butadiene and styrene.
(D) Natural rubber is a 1,4-polymer of isoprene.
Option b – Natural rubber has the trans-configuration at every double bond
Ziegler-Natta catalyst is used in the preparation of:
(A) High-density polyethylene
(B) Low-density polyethylene
(C) Dacron
(D) PVC
Option d – PVC
Which one of the following is not a condensation polymer? ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Nylon-6,6
(B) Nylon-6
(C) Dacron
(D) Buna-S
Option d – Buna-S
Which of the following statements about low-density polyethylene is false?
(A) Its synthesis requires high pressure.
(B) It is a poor conductor of electricity.
(C) Its synthesis requires dioxygen or a peroxide initiator as a catalyst.
(D) It is used in the manufacture of buckets, dust bins, etc.
Option d – It is used in the manufacture of buckets, dust bins, etc
On complete hydrogenation, natural rubber produces ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Ethylene propylene copolymer
(B) Vulcanized rubber
(C) Polypropylene
(D) Polybutylene
Option a – Ethylene propylene copolymer
The formation of which of the following polymers involves a hydrolysis reaction?
(A) Nylon 6,6
(B) Terylene
(C) Nylon 6
(D) Bakelite
Option c – Nylon 6
Of the following, which one is classified as a polyester polymer? ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Bakelite
(B) Melamine
(C) Nylon-66
(D) Terylene
Option d – Terylene
Which one of the following is used to make ‘non-stick cookware?
(A) PVC
(B) Polystyrene
(C) Polyethylene terephthalate
(D) Polytetrafluoroethylene
Option d – Polytetrafluoroethylene
In elastomer, the intermolecular forces are ( Bharti Bhawan Chemistry Class 10 MCQ )
(A) Strong
(B) Weak
(C) Nil
(D) None of the above
Option b – Weak
Bakelite is prepared by the reaction between:
(A) Urea and formaldehyde
(B) Ethylene glycol
(C) Phenol and formaldehyde
(D) Tetramethylene glycol
Option c – Phenol and formaldehyde
Terylene is a condensation polymer of ethylene glycol and:
(A) Benzoic acid
(B) Phthalic acid
(C) Salicylic acid
(D) Terephthalic acid
Option d – Terephthalic acid
Natural rubber is a polymer of:
(A) Butadiene
(B) Ethyne
(C) Styrene
(D) Isoprene
Option d – Isoprene
The linkage between two monosaccharides through oxygen is called:
(A) Glycosidic linkage
(B) Ethylenic linkage
(C) Sulphide linkage
(D) Amide linkage
Option a – Glycosidic linkage
Sucrose is:
(A) Optically inactive
(B) All rotatory
(C) Laevorotatory
(D) Dextrorotatory
Option d – Dextrorotatory
Non-reducing sugars are called:
(A) Aldoses
(B) Ketoses
(C) Monosaccharides
(D) Glycosides
Option d – Glycosides
Sucrose is a non-reducing sugar because:
(A) Reducing groups of glucose and fructose are involved in glycosidic linkage.
(B) Reducing groups are free.
(C) Reducing group of fructose is not involved in glycosidic linkage.
(D) Reducing group of glucose is involved in glycosidic linkage.
Option a – Reducing groups of glucose and fructose are involved in glycosidic linkage
Hydrolysis of maltose gives two molecules:
(A) L-glucose
(B) D-glucose
(C) D-fructose
(D) L-fructose
Option b – D-glucose
Lactose is a reducing sugar because:
(A) The hemiacetal group at C-2 of the glucose unit is not involved in glycosidic linkage but is free.
(B) The hemiacetal group at C-1 of the glucose unit is not involved in glycosidic linkage but is free.
(C) Oxidizing groups are free.
(D) Oxidizing groups are involved.
Option b – The hemiacetal group at C-1 of the glucose unit is not involved in glycosidic linkage but is free
The principle component of plant structure is:
(A) Lactose
(B) Maltose
(C) Cellulose
(D) Glucose
Option c – Cellulose
Which substance is an essential constituent of plant cell walls?
(A) Cellulose
(B) Sucrose
(C) Glycogen
(D) Fructose
Option a – Cellulose
Monosaccharides must contain at least:
(A) 4 Carbons
(B) 3 Carbons
(C) 5 Carbons
(D) 8 Carbons
Option b – 3 Carbons
Starch consists of two fractions which are:
(A) Glucose + fructose
(B) Glucose + galactose
(C) Amylose + amylopectin
(D) Amylopectin + fructose
Option c – Amylose + amylopectin
Amylose is soluble in water and forms a blue-colored complex with:
(A) Sulphur
(B) Oxygen
(C) Hydrogen
(D) Iodine
Option d – Iodine
Amylopectin is a water-insoluble component of starch which forms the following colored complex with iodine:
(A) Blue-yellow
(B) Blue-white
(C) Blue-violet
(D) Blue-red
Option c – Blue-violet
Which shows a similar structure to amylopectins?
(A) Glycogen
(B) Cellobiose
(C) Lactose
(D) Cellulose
Option a – Glycogen
Animal starch is:
(A) Glycose
(B) Glycogen
(C) Cellulose
(D) Cellobiose
Option b – Glycogen
Ethanol is added in the hydrolysis of cane sugar to:
(A) Increase solubility of glucose
(B) Decrease rate of reaction
(C) Increase rate of reaction
(D) Separate glucose from fructose
Option d – Separate glucose from fructose
Glucose is oxidized with Bromine water to give:
(A) n-Hexane
(B) Saccharic acid
(C) Glucose pentaacetate
(D) Gluconic acid
Option d – Gluconic acid
Glucose reacts with ethanoic anhydride to give:
(A) Glucose triacetate
(B) Glucose tetracetate
(C) Glucose pentaacetate
(D) Glucose hexacetate
Option c – Glucose pentaacetate
Carbohydrates containing only three asymmetric carbon atoms are:
(A) Xylose, fructose
(B) Erythrose, xylose
(C) Arabinose, galactose
(D) Ribose, dihydroxyacetone
Option a – Xylose, fructose
Glucose and fructose are, respectively:
(A) Pentahydroxy aldehyde and pentahydroxy ketone
(B) Tetrahydroxy alcohol and pentahydroxy ketone
(C) Pentahydroxy alkanal and hexahydroxy ketone
(D) Pentahydroxy ketone and pentahydroxy aldehyde
Option a – Pentahydroxy aldehyde and pentahydroxy ketone
Carbohydrates that, on hydrolysis, produce 2 to 10 units of monosaccharides are called:
(A) Sugars
(B) Monosaccharides
(C) Oligosaccharides
(D) Polysaccharides
Option c – Oligosaccharides
Carbohydrates are used by the body mainly
(A) As a source of energy
(B) For building muscles.
(C) For all its development needs
(D) For obtaining vitamins.
Option a – As a source of energy
Hydrolyzed solution of sucrose shows……. rotation, hence it is called
(A) Dextro, invert sugar
(B) Dextro, dextrose sugar
(C) Laevo, invert sugar
(D) Laevo, dextrose sugar
Option c – Laevo, invert sugar
Maltose is a reducing sugar because
(A) The hemiacetal group at C-1 of the second ring is not involved in glycosidic linkage.
(B) It does not contain glycosidic linkage.
(C) It contains a free -CHO group.
(D) It contains a primary alcoholic -OH group.
Option a – The hemiacetal group at C-1 of the second ring is not involved in glycosidic linkage
The water-soluble component of starch is
(A) Amylose, which constitutes 20% of starch
(B) Amylose, which constitutes 80% of starch
(C) Amylose, which constitutes 60% of starch
(D) Amylose, which constitutes 40% of starch
Option a – Amylose, which constitutes 20% of starch
The water-insoluble component of starch is called
(A) Amylose, which constitutes about 20%
(B) Amylopectin, which constitutes about 80%
(C) Amylose, which constitutes about 35%
(D) Amylopectin, which constitutes about 65%
Option b – Amylopectin, which constitutes about 80%
Which is a branched-chain polymer?
(A) Lactose
(B) Cellulose
(C) Amylose
(D) Amylopectin
Option d – Amylopectin
Enzymes belong to which class of compounds?
(A) Hydrides
(B) Polynitrogen heterocyclic compounds
(C) Polysaccharides
(D) Polypeptides
Option d – Polypeptides
By the action of enzymes, the rate of biochemical reaction
(A) Decreases
(B) Increases
(C) Do not change
(D) Either A or B
Option c – Do not change
Enzymes are
(A) Complex nitrogenous substances produced
(B) Living organisms
(C) Dead organisms
(D) All of the above
Option d – All of the above
Every living cell contains at least …….. different enzymes.
(A) 65
(B) 203
(C) 700
(D) 1000
Option d – 1000
Enzymes in the living systems
(A) Transport oxygen
(B) Provide energy
(C) Provide immunity
(D) Catalyze biological reactions
Option d – Catalyze biological reactions
Enzymes
(A) Consist of amino acids
(B) Accelerate biochemical reactions
(C) Have optimum at body temperature
(D) Have all these properties.
Option d – Have all these properties
Precipitation of proteins is called
(A) Reduction
(B) Polymerization
(C) Precipitation
(D) Denaturation
Option d – Denaturation
The catalyst for various biochemical reactions in living organisms is called
(A) Hormones
(B) Proteins
(C) Enzymes
(D) Carbohydrates
Option c – Enzymes
The conversion of maltose into glucose is catalyzed by
(A) Oxidase
(B) Maltase
(C) Diastase
(D) Invertase
Option b – Maltase
The name of the enzyme ends in the suffix
(A) -ane
(B) -ene
(C) -ose
(D) -ase
Option d – -ase
Chemically enzymes are
(A) Fatty acids
(B) Proteins
(C) Oils
(D) Minerals
Option b – Proteins
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
The base present in DNA but not in RNA is
(A) Uracil
(B) Thymine
(C) Adenine
(D) Uracil
Option b – Thymine
RNA is different from DNA because RNA contains
(A) Ribose sugar and uracil
(B) Deoxyribose sugar and uracil
(C) Ribose sugar and thymine
(D) Deoxyribose sugar and thymine
Option a – Ribose sugar and uracil
DNA and RNA are chiral molecules. Their chirality is due to
(A) Chiral acids
(B) Chiral phosphate ester linkage
(C) L-sugar component
(D) D-sugar component
Option d – D-sugar component
Nucleic acids, both DNA and RNA are polymers of
(A) Nucleosides
(B) Nucleotides
(C) Fructose
(D) Aminoacids
Option b – Nucleotides
The function of deoxyribonucleic acid in an organism is
(A) To assists the synthesis of proteins and polypeptides
(B) To store information of heredity characteristics
(C) To assists the synthesis of RNA
(D) All of above
Option d – All of above
In nucleic acids the sequence is
(A) -Phosphate – Sugar – Base
(B) -Phosphate – Base – Sugar
(C) Sugar – Base – Phosphate
(D) Base – Phosphate – Sugar
Option a – -Phosphate – Sugar – Base
Which substance is not present in nucleic acid?
(A) Adenine
(B) Uracil
(C) Thymine
(D) Guanidine
Option d – Guanidine
Which of the following is not present in nucleic acids?
(A) Cytosine
(B) Guanine
(C) Uracil
(D) 2-aminobenzoic acid
Option d – 2-aminobenzoic acid
Nitration of which of the following compounds is difficult
(A) Benzene
(B) Nitrobenzene
(C) Toluene
(D) Phenol
Option b – Nitrobenzene
Which of the following is used as a solvent in the Friedel-Crafts reaction
(A) Toluene
(B) Nitrobenzene
(C) Benzene
(D) Aniline
Option b – Nitrobenzene
Which of the following may be prepared by Gabriel’s phthalimide synthesis
(A) Aliphatic amines
(B) Aromatic amines
(C) Aliphatic amides
(D) Aromatic amides
Option a – Aliphatic amines
When an organic compound was treated with sodium nitrite and HCl in the ice-cold condition, nitrogen gas evolved. The compound is
(A) a nitro compound
(B) a primary amine
(C) a secondary amine
(D) a tertiary amine
Option b – a primary amine
How many products will be obtained when propane is subjected to vapor-phase nitration?
(A) 2
(B) 3
(C) 4
(D) 5
Option c – 4
Which of the following is not a primary amine?
(A) Aniline
(B) N-methyl cyclohexyl amine
(C) Secondary propyl amine
(D) Ter-butyl amine
Option b – N-methyl cyclohexyl amine
In the Hoffmann’s method for the separation of 1º, 2°, and 3° amines, the reagent used is
(A) Acetyl chloride
(B) Benzene sulphonyl chloride
(C) Diethyl oxalate
(D) Nitrous acid
Option c – Diethyl oxalate
The reduction of alkane nitriles with sodium and alcohol is called
(A) Rosenmund reduction
(B) Catalytic reduction
(C) Wolff-Kishner reduction
(D) Mendius reaction
Option d – Mendius reaction
Alkyl halide reacts with AgCN to form mainly:
(A) Alcohol
(B) Cyanide
(C) Isocyanide
(D) Both B and C
Option c – Isocyanide
Ethyl iodide in reaction with potassium nitrite gives
(A) Ethyl nitrite
(B) Nitroethane
(C) Amine
(D) Acid
Option a – Ethyl nitrite
The alkane nitriles are isomeric with
(A) Primary alkanamines
(B) Secondary alkanamines
(C) Alkyl isocyanides
(D) Nitroalkanes
Option c – Alkyl isocyanides
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