laboursonline – MCQs, Mock Tests | Chemistry Chemistry MCQ Question

The distinction test for primary secondary and tertiary alcohol required to react each of them is

1. Cone. HCI and anhydrous SOCl2
2. Cone. HCI and anhydrous CaCl2
3. Cone. HCI and anhydrous PCl2
4. Cone. HCI and anhydrous ZnCl2

✅ Correct Answer: 4

Which compound is also known by the name of carbolic acid?

1. C2H2OH
2. H2CO3
3. C6H5OH
4. H3PO3

✅ Correct Answer: 3

The given dissociation constant (Ka) value 1.3x10-10 is of

1. Alcohol
2. Acetic acid
3. Water
4. Phenol

✅ Correct Answer: 4

Heating phenol with Zn will yield

1. Benzene
2. Benzoic acid
3. Phenoxide
4. Cyclohexane

✅ Correct Answer: 1

When phenol is heated with concentrated nitric acid the product is

1. Picric acid
2. o-nitrophenol
3. 1 3 5 -trinitro benzene
4. p-nitrophenol

✅ Correct Answer: 1

Treating phenol with formaldehyde in the presence of dilute base forms Bakelite. The process involved is

1. oxidation
2. elimination
3. condensation polymerization
4. additional polymertization

✅ Correct Answer: 3

Which compound shows hydrogen bonding?

1. C2H6
2. C2H5Cl
3. CH3OCH3
4. C2H5OH

✅ Correct Answer: 4

Ethanol can be converted into ethanoic acid by

1. Hydrogenation
2. Hydration
3. Oxidation
4. Fermentation

✅ Correct Answer: 3

Methyl alcohol is not used

1. As a solvent
2. As an antifreezing agent
3. As a substitute for petrol
4. For denaturing of ethyl alcohol

✅ Correct Answer: 3

Which alcohol will undergo elimination reaction to give alkene in the presence of acidic potassium dichromate?

1. Primary alcohol
2. Secondary alcohol
3. Tertiary alcohol
4. All of above

✅ Correct Answer: 3

Methanol can be obtained from

1. water gas
2. destructive distillation of wood
3. methane
4. all

✅ Correct Answer: 4

An alcohol which can be prepared by fermentation is

1. CH3OH
2. C3H7OH
3. CH3 - CH2 - OH
4. C6H5OH

✅ Correct Answer: 3

Absolute alcohol is obtained when rectified spirit is treated with

1. Ca(OH)2
2. CaCO3
3. CaCl2
4. CaO

✅ Correct Answer: 4

When alcohol reacts with phosphorous halides it geive

1. alkyl halides
2. alkyl amine
3. alkanes
4. alkynes

✅ Correct Answer: 1

Phenol was isolated by Runge from

1. vegetable oil
2. coaltar
3. wood
4. none of these

✅ Correct Answer: 2

Which one of the following compound does not have - OH group

1. ethylene glycol
2. glycerol
3. picric acid
4. ethyl acetate

✅ Correct Answer: 4

The hydrogenation of phenol in the presence of Ni and heat gives

1. cyclohexane
2. n - hexane
3. 1 - hexanol
4. cyclohexanol

✅ Correct Answer: 4

Ethers show functional group isomerism with

1. aldehydes
2. ketones
3. alcohols
4. carboxylic acid

✅ Correct Answer: 3

Ethanol and methanol can be distinguished by a

1. Iodoform test
2. Lucas test
3. Benedicts test
4. Tollens test

✅ Correct Answer: 1

Which one of the following alcohol has greater boiling point

1. ethanol
2. ethylene glaycol
3. glycerol
4. methanol

✅ Correct Answer: 3

Polymers described as large molecules built up from small repeating units called

1. Biopolymers
2. Dimers
3. Monomers
4. metamers

✅ Correct Answer: 3

A polymer in which three different monomers combine called.

1. Copolymer
2. Terpolymer
3. Homopolymer
4. Biopolymer

✅ Correct Answer: 2

The important monomers of acryclic resins is

1. Vinyl chloride
2. Styrene
3. Methylmethacrylate
4. Hexamethylenediamine

✅ Correct Answer: 3

Polyester resins are the product of the reaction of

1. Dihydric alcohol and dicarboxylic aromatic acids
2. Polyamines with aliphatic dicarboxylic acids
3. Styrene in the presence of catalyst
4. Epichlorohydrin with diphenylol propane

✅ Correct Answer: 1

Industrial materials and thermal power stations are coated with

1. Polyester resins
2. Epoxy paints
3. Polyamide resins
4. Polyvinyl chloride

✅ Correct Answer: 2

Carbohydrates are polyhydroxy compounds of

1. Glucose
2. Glyceraldehydes
3. Oligosaccharides
4. Aldehydes and ketones

✅ Correct Answer: 4

Common example of carbohydrates are

1. Cellulose glycogen galactose
2. Glyceraldehydes glucose peptone
3. Glycerol phospho lipids collagen
4. Legumin amylopectin albumin

✅ Correct Answer: 1

Nylon is obtained by heating

1. Acrylic acid
2. Epichlorohydrin
3. Vinyl chloride
4. Adipic acid with hexamethylene diamine

✅ Correct Answer: 4

Hydrolysis of an oligosaccharide in the presence of acid yields

1. one monosaccharide unit
2. No monosaccharide unit
3. 2-9 monosaccharide unit
4. many monosaccharide

✅ Correct Answer: 3

Amylose is

1. Soluble in water
2. Insoluble in water
3. Soluble in alcohol
4. Partially soluble in alcohol

✅ Correct Answer: 1

The process of polymerization was classified by

1. Strecker
2. Sabatier
3. Runge
4. W. H. Carothers

✅ Correct Answer: 4

All proteins yield ______ upon complete hydrolysis.

1. Nitrogen
2. Amino acids
3. Carbon and hydrogen
4. Sulphur

✅ Correct Answer: 2

Protein attached to some non protein group is called

1. Derived protein
2. Sample protein
3. Proteoses
4. Conjugated protein

✅ Correct Answer: 4

Regular coiling or zigzagging of polypeptide through hydrogen bonding is its.

1. Quantum structure
2. Secondary structure
3. Tertiary structure
4. Primary structure

✅ Correct Answer: 2

Orgosterol is

1. Orgocalciferol
2. Vitamin D2
3. Sterol
4. all of the above

✅ Correct Answer: 3

Lipids are soluble in

1. Organic solvents
2. Organic and inorganic solvents
3. Inorganic solvents
4. Solubility has nothing to do with lipids

✅ Correct Answer: 1

Animal fats are located particularly in

1. Skeleton tissues
2. Cardiac tissues
3. Connective tissues
4. Adipose tissues

✅ Correct Answer: 4

Animal and vegetable fats are

1. Glycerols
2. Fatty acids
3. Triesters formed from glycerol and fatty acids
4. Tetraesters formed from glycerol and fatty acids

✅ Correct Answer: 3

Lipopolysaccharides are examples of

1. Derived lipids
2. Simple lipids
3. Compound lipids
4. Not a type of lipids

✅ Correct Answer: 3

Triglycerides are easily hydrolyzed by enzymes called

1. Lyases
2. Ligases
3. Lipases
4. Hydrolases

✅ Correct Answer: 3

Saponification is the hydrolysis of fat or oil with an

1. Acid
2. Alkali
3. Enzyme and alkali
4. Enzyme and acid

✅ Correct Answer: 2

Enzynies that catalyze the transfer of groups within molecule are called

1. Isomerases
2. Lyases
3. Transferases
4. Ligases

✅ Correct Answer: 1

Enzymes from the same organism which catalyze same reaction but are chemically and physically distinct from each other are called

1. Oxidoreductases
2. Hydrolases
3. Isoenzymes
4. Isomerases

✅ Correct Answer: 3

Rate of enzymatic reaction is directly proportional to the concentration of

1. Enzyme
2. Substrate
3. Enzyme and substrate
4. Enzyme and product

✅ Correct Answer: 2

Enzyme proved useful in cancer treatment is

1. Lactic dehydrogenase
2. Alkaline phosphatase
3. L-asparaginase
4. Cellulase

✅ Correct Answer: 3

Purines and pyrimidines are

1. Enzymes
2. Nitrogenous bases
3. Carbohydrates
4. Lipids

✅ Correct Answer: 2

Nucleic acids were first demonstrated in

1. Pus cells
2. Sperm heads
3. 1872
4. all of the above

✅ Correct Answer: 1

Nucleic acids direct the synthesis of

1. Glucose
2. Triglycerides
3. Proteins
4. All

✅ Correct Answer: 3

The mechanism by which the genetic information can be duplicated is called

1. Duplication
2. Transcription
3. Replication
4. Mutation

✅ Correct Answer: 3

The nitrogenous base different in RNA as compared to DNA is

1. Cytosine
2. Thymine
3. Adenine
4. Guanine

✅ Correct Answer: 2

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