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SSLC Chemistry Previous Year Question Paper for Students
Carboxyl carbon is less electrophilic than carbonyl carbon in alkanal and alkanones due to:
(A) Negative inductive effect of both oxygen atoms.
(B) Delocalization of lone pair of electrons on oxygen in -OH group.
(C) Electron-attracting nature of oxygen atoms.
(D) Electron-donating inductive effect of alkyl group.
Option b – Delocalization of lone pair of electrons on oxygen in -OH group
Toluene is treated with CO and HCl under high pressure in the presence of cuprous chloride to give ( SSLC Chemistry Previous Year Question )
(A) p-Chlorotoluene
(B) p-Methoxytoluene
(C) p-Methyl benzaldehyde
(D) p-Nitro anisole
Option c – p-Methyl benzaldehyde
Dodecanal is the partial reduction product of:
(A) Ethyl decanoate
(B) Methyl dodecanoate
(C) Dodecyl cyanide
(D) Dodecanol
Option b – Methyl dodecanoate
During the preparation of butanone from alkane nitrile, which is not used? ( SSLC Chemistry Previous Year Question )
(A) Ethyl cyanide
(B) Methyl magnesium bromide
(C) Methyl cyanide
(D) n-Propyl magnesium bromide
Option d – n-Propyl magnesium bromide
By Rosenmund reduction, aldehydes are prepared from:
(A) Alcohols
(B) Carboxylic acids
(C) Acyl chlorides
(D) Alkyl cyanides
Option c – Acyl chlorides
In the preparation of alkanals and alkanones by oxidation of alkanol, the yield of alkanones is maximum as compared to alkanals because ( SSLC Chemistry Previous Year Question )
(A) Alkanals are oxidized into alkanoic acid, whereas alkanones cannot.
(B) Alkanones are less volatile.
(C) Alkanals are not oxidized into alkanoic acid, whereas ketones can.
(D) Alkanals are lost from the reaction mixture due to low boiling point.
Option a – Alkanals are oxidized into alkanoic acid, whereas alkanones cannot
Acyl chloride is reduced to the corresponding aldehyde by hydrogen using a palladium catalyst poisoned with barium sulfate. This reaction is known as:
(A) Bimolecular reduction
(B) Rosenmund reduction
(C) Wolf Kishner reduction
(D) Clemmensen’s reduction
Option b – Rosenmund reduction
Carboxylation of alkyl magnesium halide is carried out by ( SSLC Chemistry Previous Year Question )
(A) Dry ice
(B) Dry ether
(C) Dry ketone
(D) Carbon monoxide
Option a – Dry ice
Benzoic acid is obtained by:
(A) Reduction of benzamide
(B) Oxidation of benzoyl chloride
(C) Reduction of phenyl cyanide
(D) Carboxylation of Ph-Mg-Cl
Option d – Carboxylation of Ph-Mg-Cl
Isobutyric acid is the carbonation product of ( SSLC Chemistry Previous Year Question )
(A) Isopropyl magnesium iodide
(B) Isobutyl magnesium iodide
(C) 2-Methyl butyl magnesium iodide
(D) n-Propyl magnesium iodide
Option a – Isopropyl magnesium iodide
Hexane-1,6-dioic acid is obtained by oxidation of:
(A) Hex-2-ene
(B) Cyclohexene
(C) Cyclohex-1,4-diene
(D) 3-methyl cyclohex-1-ene
Option b – Cyclohexene
The boiling point of carboxylic acids is higher than alcohols due to ( SSLC Chemistry Previous Year Question )
(A) Their larger size
(B) Strong dipole-dipole interaction
(C) Strong bond between carbon and oxygen
(D) Formation of dimer through strong intermolecular H bonding.
Option d – Formation of dimer through strong intermolecular H bonding
Water is removed from ethanoic acid to get glacial acetic acid by:
(A) Distillation
(B) Heating
(C) Steam distillation
(D) Cooling at 289.5 K
Option d – Cooling at 289.5 K
Vinegar is ……….% aqueous solution of acetic acid ( SSLC Chemistry Previous Year Question )
(A) 30
(B) 12 to 22
(C) 17 to 28
(D) 6 to 8
Option d – 6 to 8
During the formation of hydrogen bonding in water and carboxylic acids, how many molecules of carboxylic acids are linked to a water molecule?
(A) Four
(B) Three
(C) Two
(D) One
Option b – Three
Alkanals and alkanones undergo reactions ( SSLC Chemistry Previous Year Question )
(A) Electrophilic substitution
(B) Electrophilic addition
(C) Nucleophilic addition
(D) Nucleophilic substitution
Option c – Nucleophilic addition
The most reactive compound toward nucleophilic addition reaction is:
(A) Ethyl methyl ketone
(B) Dimethyl ketone
(C) Ethanal
(D) Methanal
Option d – Methanal
Alkanones are less reactive than alkanals towards nucleophilic addition reaction due to ( SSLC Chemistry Previous Year Question )
(A) More steric hindrance of two alkyl groups
(B) More +I effect of two alkyl groups
(C) Less electron-deficient nature of carbonyl carbon
(D) All of these
Option d – All of these
Formalin is used for the preservation of:
(A) Biological and anatomical specimens
(B) Butter
(C) Chewing gum
(D) Baked food
Option a – Biological and anatomical specimens
Methanal is available commercially as a solid polymer called ( SSLC Chemistry Previous Year Question )
(A) Metaldehyde
(B) Paraldehyde
(C) Paraformaldehyde
(D) Aldimine
Option c – Paraformaldehyde
The compound that forms a yellow precipitate on heating with NaOH and iodine is:
(A) Propan-1-ol
(B) Propan-1-al
(C) Butan-2-amine
(D) Propan-2-ol
Option d – Propan-2-ol
Non-methyl ketones do not give a ( SSLC Chemistry Previous Year Question )
(A) Negative iodoform test
(B) Positive iodoform test
(C) Bayer’s test
(D) Saytzeff’s test
Option b – Positive iodoform test
The most reactive compound towards nucleophilic addition reaction is:
(A) Methyl phenyl ketone
(B) p-nitrobenzene carbaldehyde
(C) Benzene carbaldehyde
(D) p-toluadehyde
Option b – p-nitrobenzene carbaldehyde
The Haloform test is not shown by:
(A) Propanone
(B) Acetaldehyde
(C) ter.pentyl alcohol
(D) sec.pentyl alcohol
Option c – ter.pentyl alcohol
Prop-2-en-1-al is the cross-condensation product of:
(A) Formaldehyde and acetaldehyde
(B) Acetaldehyde and acetone
(C) Acetaldehyde and propionaldehyde
(D) Formaldehyde and propionaldehyde
Option a – Formaldehyde and acetaldehyde
Aldol of ethanal is:
(A) But-3-en-1-al
(B) 3-Hydroxybutanal
(C) 2-Hydroxybutanal
(D) Acetal
Option b – 3-Hydroxybutanal
Formation of aldol condensation is a:
(A) Nucleophilic addition-elimination reaction.
(B) Electrophilic addition-elimination reaction
(C) Free radical substitution reaction
(D) Nucleophilic substitution reaction
Option d – Nucleophilic substitution reaction
2,4-Diphenyl but-2-en-1-al is the addition-elimination product of:
(A) Phenyl propanal
(B) Phenyl ethanal
(C) Diphenyl ketone
(D) Acetophenone
Option b – Phenyl ethanal
Propionyl chloride on heating with sodium propionate produces:
(A) Propionic anhydride
(B) Propionic acetic anhydride
(C) Propyl propionate
(D) Acetic anhydride
Option a – Propionic anhydride
Increasing order of acidic strength of carboxylic acids is: I) 2-Chloroethanoic acid II) Methanoic acid III) Propanoic acid IV) Ethanoic acid
(A) III < IV < I < II
(B) IV < I < III < II
(C) II < III < I < I
(D) I < IV < II < III
Option a – III
The strongest acid among the following is:
(A) 4-Methoxy benzoic acid
(B) 4-Nitrobenzoic acid
(C) Benzoic acid
(D) Acetic acid
Option b – 4-Nitrobenzoic acid
Acetyl chloride is prepared by heating phosphorus trichloride with:
(A) Acetamide
(B) Acetic acid
(C) Ethanal
(D) Ethanol
Option b – Acetic acid
Propanoic acid on heating with sulfonyl chloride produces:
(A) Propanoyl chloride
(B) n-Propyl chloride
(C) Propanoic anhydride
(D) Propionamide
Option a – Propanoyl chloride
Acetic acid on heating with ethanol gives:
(A) Methyl propionate
(B) Ethyl acetate
(C) Butyric acid
(D) n-Propyl formate
Option b – Ethyl acetate
Fischer esterification is:
(A) Nucleophilic addition
(B) Nucleophilic substitution
(C) Electrophilic substitution
(D) Electrophilic addition
Option b – Nucleophilic substitution
4-Methyl pent-3-pen-2-one is the aldol condensation product of:
(A) Acetaldehyde
(B) Propanone
(C) Propionaldehyde
(D) Ethyl methyl ketone
Option b – Propanone
2-Methyl propan-1-ol is obtained by reacting formaldehyde with:
(A) Ethyl magnesium bromide
(B) n-Propyl magnesium bromide
(C) Isopropyl magnesium bromide
(D) Terbutyl magnesium bromide
Option c – Isopropyl magnesium bromide
Incorrect statement about the addition product of ethanal and sodium bisulphite is:
(A) They are water-soluble crystalline solids.
(B) They are hydrolyzed in aldehydes by dil. acids or alkali.
(C) They are water-insoluble liquids.
(D) They are sodium salts of hydroxy sulphonic acids.
Option c – They are water-insoluble liquids
Ethanal on reacting with ethyl alcohol in dry hydrochloric acid gas gives:
(A) Ketol
(B) Acetaldol
(C) Diethoxy ethane
(D) Diacetaldehyde alcohol
Option c – Diethoxy ethane
The correct increasing order of the acid strength of (I) Benzoic acid (II) 4-nitrobenzoic acid. (III) 3,4-dinitrobenzoic acid and (IV) 4-methoxybenzoic acid is:
(A) I < II < III < IV
(B) II < I < I < III
(C) IV < I < II < III
(D) IV < II < I < III
Option c – IV
The reagent used to distinguish between acetaldehyde and benzaldehyde is:
(A) Tollen’s reagent
(B) Semicarbazide
(C) Fehling’s solution
(D) 2,4-dinitrophenyl hydrazine
Option c – Fehling’s solution
The reaction of a carbonyl compound with one of the following reagents involves nucleophilic addition followed by the elimination of water. The reagent is:
(A) A Grignard reagent
(B) Hydrazine in the presence of a feebly acidic solution
(C) Hydrocyanic acid
(D) Sodium hydrogen sulfite
Option b – Hydrazine in the presence of a feebly acidic solution
The product formed by the reaction of an aldehyde with a primary amine is:
(A) Ketone
(B) Carboxylic acid
(C) Aromatic acid
(D) Schiff base
Option d – Schiff base
Least reactive toward acid-catalyzed dehydration is:
(A) Cyclohexanol
(B) Cyclohexyl methanol
(C) 1-methyl cyclohexan-1-ol
(D) Cyclohex-2-en-1-ol
Option b – Cyclohexyl methanol
Sec. butyl alcohol on reacting with ethyl magnesium bromide in ether forms:
(A) 2-methyl pentane
(B) But-2-ene & propane
(C) Sec butyl Mg bromide & ethane
(D) 2-ethoxy butane
Option c – Sec butyl Mg bromide & ethane
Which of the following alkanols is most soluble in water:
(A) 1-Butanol
(B) 2-Butanol
(C) Isobutyl alcohol
(D) t-Butyl alcohol
Option d – t-Butyl alcohol
Which alcohol produces turbidity with Lucas reagent most slowly:
(A) 2-Butanol
(B) t-Butyl alcohol
(C) Isobutyl alcohol
(D) Diphenylcarbinol
Option c – Isobutyl alcohol
Alcohols oxidized to a ketone by chromic acid is:
(A) Phenol
(B) Cyclohexanol
(C) Cyclohexyl methanol
(D) Benzyl alcohol
Option b – Cyclohexanol
Which of the following alcohols gives a red color in the Victor Meyer test:
(A) n-Propyl alcohol
(B) Isopropyl alcohol
(C) (CH3)3C-OH
(D) sec. Butyl alcohol
Option a – n-Propyl alcohol
Ethanol on heating with acetic acid in the presence of a few drops of sulfuric acid gives the smell of:
(A) Oil of wintergreen
(B) Oil of mustard
(C) An ester
(D) Oil of bitter almonds
Option c – An ester
Which of the following does not turn the orange color of chromic acid to green:
(A) 1° alcohol
(B) 2° alcohol
(C) 3° alcohol
(D) Allyl alcohol
Option c – 3° alcohol
When ether is exposed to air, which of the following products is formed:
(A) Oxide
(B) Alkanes
(C) Alkenes
(D) Peroxide of diethyl ether
Option d – Peroxide of diethyl ether
Ketones can be prepared by:
(A) Rosenmund reduction
(B) Etard reaction
(C) Cannizzaro reaction
(D) Friedel-Craft reaction
Option d – Friedel-Craft reaction
In Liebermann’s nitroso reaction, sequential changes in the color of phenol occur as:
(A) Brown or red → green → red → deep blue
(B) Red → deep blue → green
(C) Red → green → white
(D) White → red → green
Option a – Brown or red → green → red → deep blue
When propanol is dehydrated, the product obtained is again hydrated and further oxidized to form a compound. The compound is:
(A) Propargyl alcohol
(B) Propanone
(C) Ethylene-1,2-diol
(D) Propane-1,2-diol
Option b – Propanone
When two moles of alcohol react with one mole of ketone, it gives:
(A) Hemiacetal
(B) Acetal
(C) Hemiketal
(D) Ketal
Option d – Ketal
Benzene diazonium chloride in reaction with phenol in a weakly basic medium gives:
(A) Diphenyl ether
(B) p-hydroxy azobenzene
(C) Chlorobenzene
(D) Benzene
Option b – p-hydroxy azobenzene
The compound which will readily couple with benzene diazonium chloride is:
(A) Benzoic acid
(B) Phenol
(C) Benzene
(D) Benzaldehyde
Option b – Phenol
Which of the following compounds shows intramolecular hydrogen bonding:
(A) p-Nitrophenol
(B) Ethanol
(C) o-Nitrophenol
(D) Methenamine
Option c – o-Nitrophenol
Which of the following is the strongest acid:
(A) Carbolic acid
(B) Carbonic acid
(C) Picric acid
(D) Acetic acid
Option c – Picric acid
The product obtained by the reaction of phenol with benzene diazonium chloride is:
(A) Phenyl hydroxylamine
(B) Para amino azobenzene
(C) Phenyl hydrazine
(D) Para hydroxy azobenzene
Option d – Para hydroxy azobenzene
p-Nitrophenol is a stronger acid than phenol because the nitro group is:
(A) Electron withdrawing
(B) Electron donating
(C) Basic
(D) Acidic
Option a – Electron withdrawing
Phenol and benzoic acid are distinguished by:
(A) Lucas reagent
(B) Victor Meyer test
(C) Caustic soda
(D) Sodium bicarbonate
Option d – Sodium bicarbonate
Reimer-Tiemann formylation reaction involves the addition of:
(A) Chloroform on phenoxide ion
(B) Trichloromethyl carbanion on phenoxide ion
(C) Dichlorocarbene on phenoxide ion
(D) Hydroxide ion on phenol
Option c – Dichlorocarbene on phenoxide ion
Nitration of phenol with conc. nitric acid gives:
(A) o-nitrophenol
(B) m-nitrophenol
(C) p-nitrophenol
(D) 2, 4, 6-trinitrophenol
Option d – 2, 4, 6-trinitrophenol
Phenol on treatment with methyl chloride in the presence of anhydrous AlCl3 gives chiefly:
(A) o-cresol
(B) m-cresol
(C) anisole
(D) p-cresol
Option d – p-cresol
Deoxygenation of phenol can be achieved by distillation with:
(A) Raney nickel
(B) Lithium aluminum hydride
(C) Sodium borohydride
(D) Zinc dust
Option d – Zinc dust
Phenol can be distinguished from ethanol by reactions with the following:
(A) Iodine and alkali
(B) Ferric chloride
(C) Acetyl chloride
(D) Bromine
Option c – Acetyl chloride
Ether bottles should not be kept open in the air because:
(A) Ether is an anesthetic
(B) Ether forms an explosive peroxide
(C) Ether is costly
(D) Ether gets oxidized to ethanol
Option a – Ether is an anesthetic
In order to obtain diethyl ether from ethanol, the latter is taken in:
(A) In the equal amount of sulfuric acid
(B) In the slightly lesser amount of sulfuric acid
(C) In excess amount of sulfuric acid
(D) In far lesser amount of sulfuric acid
Option c – In excess amount of sulfuric acid
Which of the following will not undergo Reimer-Tiemann reaction?
(A) Benzene
(B) Nitrobenzene
(C) Benzaldehyde
(D) All of these
Option d – All of these
Reimer-Tiemann reaction is shown by:
(A) Benzene
(B) Phenol
(C) Nitrobenzene
(D) p-nitrobenzaldehyde
Option b – Phenol
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