CBSE Questions for Class 12 Engineering Chemistry Aldehydes,Ketones And Carboxylic Acids Quiz 6 - MCQExams.com

Aspirin is:
  • Acetyl salicylic acid
  • Benzoyl salicylic acid
  • Chloro benzoic acid
  • Anthranilic acid
A student takes 2 mL acetic acid in a dry test tube and adds a pinch of sodium hydrogen carbonate to it. He makes the following observations:
I. A colourless and odourless gas evolves with a brisk effervescence.
II. The gas turns lime water milky when passed through it.
III. The gas burns with an explosion when a burning splinter is brought near it.
IV. The gas extinguishes the burning splinter that is brought near it.
The correct observations are:
  • I, II, and III
  • II, III and IV
  • III, IV and I
  • IV, I and II
Find structure which has an organic acid functional group :
  • $$\displaystyle { CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 3 }$$
  • $$\displaystyle CH_3-\underset {\displaystyle \underset  {\displaystyle O}{ ||}}{C}-OH$$
  • $$\displaystyle { CH }_{ 3 }-O-{ C }_{ 3 }{ H }_{ 7 }$$
  • $$\displaystyle { CH }_{ 3 }-\overset { \overset { O }{ \parallel } }{ C } -{ CH }_{ 3 }$$
  • $$CH_3 - CH_2 - NH_2$$
Polarity of carbonyl group increase with increase of ________.
  • electronegative groups
  • electropositive groups
  • neutral group
  • none of these
The IUPAC name of the formic acid:
  • methanoic acid
  • ethanoic acid
  • propanoic acid
  • butanoic acid
The solubility of water decreases rapidly with the increase in the size of ------------ groups attached to carbonyl group.
  • alkyl
  • aryl
  • phenyl
  • benzyl
Aldehydes and ketones with ______ or more carbon atoms are either sparingly soluble or insoluble in water.
  • 5
  • 6
  • 7
  • 8
Carbonyl group of aldehyde and ketone contain ________ groups.
  • carbon and oxygen
  • carbon and nitrogen
  • carbon and sulphur
  • none of these
Which of the following IUPAC name will be used to name carboxylic acid functional group?
  • -one
  • -oic acid
  • -al
  • -ane
The carboxylic acid includes the functional group:
  • carboxyl and amine group
  • carboxyl and amide group
  • carboxyl and hydroxyl group
  • carboxyl and amine functional group
What is the product of the following reaction?

508567_a481285af02b403bbadafb9f91085957.png
Which of the following compounds are not soluble in water?
  • Formaldehyde
  • Acetaldehyde
  • Acetone
  • None of the above
IUPAC name of $$HOOCCH_2C(OH)(COOH)CH_2COOH$$ is
  • citric acid
  • 2-Hydroxy-1,2,3-propanetri-carboxylicacid
  • 2-Hydroxy-1,2,3-propanoic acid
  • hexanetrioic acid
What is the IUPAC name of $$CH_3CH=CH-COOH$$?
  • 2-Butenoic acid
  • Crotonic acid
  • 2-Butanoic acid
  • 3-Butenoic acid
The organic acid that can be made from ethanol is:
  • acetic acid
  • formic acid
  • $$C_{3}H_{7}OH$$
  • valeric acid
  • butanoic acid
What is the common name of $$CH_2=CHCOOH$$?
  • Anthranilic acid
  • Citric acid
  • Acrylic acid
  • Propenoic acid
As the carbon chain increases in aldehyde and ketone compounds, solubility in water:
  • decreases
  • increases
  • may increase
  • may decrease
What is the structure of carbonyl group?
  • Tetrahedral
  • Trigonal planar
  • Pyramidal
  • Linear
Acetyl chloride cannot be obtained by treating acetic acid with:
  • $$CHCl_3$$
  • $$PCl_3$$
  • $$PCl_5$$
  • $$SOCl_2$$

In the sequence of the given reactions, the starting compound $$P$$ is:
571283_9a8aed71aa74425cb7bbce241bc71a70.png
  • o-nitro toluene
  • m-nitro toluene
  • o-bromo toluene
  • p-nitro toluene
$$CH_3-\overset{NH_2}{\overset{|}{C}H}-COOH$$

IUPAC name of the given compound is:
  • propanamine-oic acid
  • 2-Aminopropanoic acid
  • amino propanoic acid
  • none of these
IUPAC name of $$\begin{matrix} C{ H }_{ 3 }- & CH &-C{ H }_{ 2 }- CH -C{ H }_{ 3 } \\  & | &  | &  \\  & OH &  COOH &  \end{matrix}$$ is:
  • 4-hydroxy-1-methylpentanoic acid
  • 4-hydroxy-2-methylpentanoic acid
  • 2-hydroxy-4-methylpentanoic acid
  • 2-hydroxy-2-methylpentanoic acid
The compound $$X$$ on oxidation gives a mixture of acetic acid and formic acid, while $$Y$$ on oxidation forms only propionic acid. $$X$$ and $$Y$$ are :
  • $$X$$: $$CH_3-CH(OH)-CH_3$$, $$Y$$ : $$CH_3-CO-CH_3$$
  • $$X$$ : $$CH_3 - CH_2 - CH_2 - CHO$$, $$Y$$ : $$CH_3 - CO - CH_3$$
  • $$X$$ : $$CH_3 - CO - CH_3$$, $$Y$$ : $$CH_3 - CH_2 - CHO$$
  • $$X$$ : $$CH_3 - CO - CH_3$$, $$Y$$ : $$CH_3 - O - CH_2 - CH_3$$
IUPAC name of the compound is:
591965_ae622998139e4d03be9b2bab24065d19.png
  • 2-methylbenzoic acid
  • 3-methyl benzenecarboxilic acid
  • 2-methylbenzeneoic acid
  • 3-methylbenzoic acid
Formaldehyde is used as formalin in industries:
  • to preserve biological specimens
  • to prepare bakelite
  • both $$A$$ and $$B$$
  • none of these
IUPAC name of compound is:
591969_739fd33d311e412f86be712f36101599.png
  • 3,3-dimethylpropanoic acid
  • 2-methylbutanoic acid
  • 3-Methylbutanoic acid
  • none of these
IUPAC name of the compound is :
591981_6ded27871c0c4f54ae5f17567f710596.png
  • butenoic acid
  • butanoic acid
  • 2-butynoic acid
  • none of these
IUPAC naming of the compound is:

591956_b3541f9b76d7431ba64c241109ccfe27.png
  • 3-octanoic acid
  • octane-3-oic acid
  • 2-ethylhexanoic acid
  • 3-ethylhexanoic acid
$$Ph-\underset{OH}{\underset{|}{C}H}-\overset{O}{\overset{||}C}-OH$$
Correct IUPAC naming of given acid is:
  • 1-hydroxy-1-phenylethanoic acid
  • 2-hydroxy-2-phenylethanoic acid
  • 2-phenyl hydroxy ethanoic acid
  • none of these
The correct IUPAC name of the given compound is:
592109_240fb8ea5eba4f4bb9078741b53a1139.png
  • 2-phenyl-2-methylpropanoic acid
  • 2-phenyl-2,2-dimethylethanoic acid
  • isopropyl benzanoic acid
  • none of these
Which of the following aldehyde is mostly used as plasticizer?
  • Formaldehyde
  • Acetaldehyde
  • Butyraldehyde
  • Benzaldehyde
Which of the following does not uses formaldehyde in its preparation?
  • Melamine polymer
  • Bakelite
  • PHBV
  • preservation of biological specimens
Which is the commercially largest produced aldehyde?
  • Acetaldehyde
  • Formaldehyde
  • Benzaldehyde
  • Butyraldehyde
Which of the following is used as a food preservative?
  • Aldehydes
  • Ketones
  • Carboxylic acid
  • Alcohol
Formalin is used in the preparation of:
  • bakelite
  • nylon
  • styrene
  • teflon
Formalin is:
  • $$60$$% solution of formaldehyde
  • $$40$$% solution of formaldehyde
  • $$30$$% solution of formaldehyde
  • $$50$$% solution of formaldehyde
The percentage of formaldehyde in formalin is:
  • $$40$$%
  • $$30$$%
  • $$20$$%
  • $$10$$%
Which of the Following reagents give reductive addition reaction to aldehyde and ketone ?
  • $$LiAlH_4$$
  • $$NaBH_4$$
  • Both A and B
  • None of them
A major constituent of vinegar is:
  • Methanoic acic
  • Benzoic acid
  • Ethanoic acid
  • Picric acid
Manufacture of nylon$$-6,6$$ uses:
  • hexanoic acid
  • pentanoic acid
  • hexanedioic acid
  • acetic acid
Which of the following doesn't use acetaldehyde as a starting material in its preparation?
  • Ethyl acetate
  • Ethanoic acid
  • Methanoic acid
  • Drugs
Number of moles of oxygen that one mole of benzoic acid uses in the production of phenol by oxidative decarboxylation?
  • $$3/2$$
  • $$1$$
  • $$1/2$$
  • $$2$$
Which one of the following contains either aldehyde or ketones in it?
  • Vanillin
  • Acetone
  • Camphor
  • Formalin
Soaps and detergent industries uses:
  • lower fatty acids
  • higher fatty acids
  • esters
  • alcohols
Which  is a common standard for calibrating a bomb calorimeter in teaching laboratories?
  • Acetic acid
  • Benzoic acid
  • Picric acid
  • Phenol
Which of the following aldehyde is very much used in perfumery and in dye industries?
  • Formaldehyde
  • Acetaldehyde
  • Benzaldehyde
  • Butyraldehyde
Carboxylic acids can be prepared from alcohols, nitriles or esters.
Which statements are correct?
$$1$$. Both primary and secondary alcohols can be oxidised to carboxylic acids.
$$2$$. Carboxylic acids can be made from nitriles by hydrolysis.
$$3$$. Ethyl propanoate gives propanoic acid when reacted with hydrochloric acid.
  • $$1, 2$$ and $$3$$ are correct
  • $$1$$ and $$2$$ only are correct
  • $$2$$ and $$3$$ only are correct
  • $$1$$ only is correct
The IUPAC name of
1605059_98ae03ff1c70465bbeda84d9da1dbf6d.GIF
  • 2, 4, 5-Hexane tricarboxylic acid
  • 2, 3,5 - Hexane tricarboxylic acid
  • 2-(1-carboxyethyl)-4-merthyl pentanedioic acid
  • 3, 5-Dicarboxy-2-methyl hexanoic acid
The major product $$'Y'$$ in the following reaction is:
1614835_f0e25232b3a74febaa752d6ddaa73501.PNG
Which of the following compounds will show the maximum enol content?
  • $$CH_3COCH_2COCH_3$$
  • $$CH_3COCH_3$$
  • $$CH_3COCH_2CONH_2$$
  • $$CH_3COCH_2COOC_2H_5$$
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