CBSE Questions for Class 12 Medical Chemistry Aldehydes, Ketones And Carboxylic Acids Quiz 3 - MCQExams.com

Consider the following reaction:
The compound $$D$$ is an ortho-isomer and E is a $$p-isomer$$. The compounds $$D$$ and $$E$$, respectively are :

245838.png
  • Phthalic acid and isophthalic acids
  • Isophthalic and phthalic acids
  • Terephthalic and phthalic acids
  • Phthalic and terephthalic acids
The product (B) is:
244193_c6f01459b4704cb0bb02f9581049f601.png
  • Benzaldehyde
  • Benzoic acid
  • Phenylacetic acid
  • None of the above
Which of the following statements is/are correct?
  • Methane was named as fire damp as it forms explosive mixture with air
  • Primary suffixes are added to the root word to show saturation or unsaturation in a C atom
  • The IUPAC name of valerie acid is pentanoic acid
  • The common name of hexanoic acid is caproic acid
Which of following is compound (A) if (G) is 2-oxo-butan-1-al?
249128_7f83ea167b804da6baa042cfdb1ee76f.png
  • Ethane
  • Ethene
  • Ethyne
  • Butyne
Which of the following is an example of nucleophilic addition to acetaldehyde?
  • Acetal formation
  • Cyanohydrin formation
  • Bisulphite adduct
  • Wolff-Kishner reaction
Which of the following cannot be used as reagent (B) ?
250311.jpg
  • $$CH_3O\ominus$$ at high temperature
  • $$C_2H_5O^\ominus$$ at high temperature
  • $$CsOH + C_2H_5OH$$
Give the products formed on reductive ozonolysis with LAH and oxidative ozonolysis with $$H_2O_2$$, from the compounds.
249375_fe88eda30d8048d480e3d46b3e11be7f.png
  • Propan-1,3-diol and propan-1,3-dioic acid
  • Propan-1,2-diol and propan-1,3-dioic acid
  • Propan-1,3-diol and propan-1,2-dioic acid
  • Propan-1,2-diol and propan-1,2-dioic acid
In the following sequence of reactions, products (A) to (H) are formed. Then the Compound (G) is :

249186_bf9e3ddfa4b54d9ca3ccd6934f07aa3e.png
In the reaction
The product (A) is :

263658.jpg
Ethanol on reaction of acidified potassium dichromate form:
  • ethane
  • ethene
  • ethanal
  • ethanoic acid
Cumene on treatment with $${KMnO_4}$$ gives:-
  • A
  • B
  • C
  • D
$$HBr$$ fails to give addition products with carbonyl compounds.
Is the above statement true?
  • True
  • False
  • Both Assertion and Reason are correct and Reason is the correct explanation for Assertion
  • Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion
  • Assertion is correct but Reason is incorrect
  • Both Assertion and Reason are incorrect
$${pK_a}$$  and $${K_a}$$ of an acid are connected  by the relation ---------
  • $${pk_a}$$ = $${log k_a}$$
  • $${pk_a}$$ = $${- pH}$$
  • $${pk_a}$$ = $${- log k_a}$$
  • $${pk_a}$$ = $${- log k_b}$$
Acetylsalicylic acid is a pain killer and is commonly known as
  • paracetamol
  • aspirin
  • ibuprofen
  • penicillin
Functional group of carboxylic acid is:
  • $$RO-$$
  • $$-C-OH$$
  • $$-OH$$
  • $$ -COOH$$
In the reaction $$C_6H_6\, \xrightarrow[AlCl_3]{CH_3Cl}\, A\, \xrightarrow{KMnO_4}\, B$$ 
$$B$$ is:
  • benzoic acid
  • benzoyl chloride
  • benzaldehyde
  • chlorobenzene
The major product in the following at $$25^oC$$ is: $$CH_3COOH\xrightarrow {CH_3CH_2NH_2}$$
  • $$CH_3CONHCH_2CH_3$$
  • $$CH_3CH=NCH_2CH_3$$
  • $$NH_3^+CH_2^-CH_3.CH_2COO^-$$
  • $$CH_2CON=CHCH_3$$
The order or reactivity of phenyl magnesium bromide with the following compounds is:
(I) $$CH_3-\overset{\displaystyle O}{\overset{\displaystyle ||}{C}}-CH_3$$
(II) $$H-\overset{\displaystyle O}{\overset{\displaystyle ||}{C}}-CH_3$$
(III) $$Ph-\overset{\displaystyle O}{\overset{\displaystyle ||}{C}}-Ph$$
  • (II)> (III) > (I)
  • (I) > (III)> (II)
  • (II) > (I) > (III)
  • all react with the same rate
Polarisation of electron in acrolein $$\left(C{H}_{2}=CH-CH=O\right)$$ or resonance hybrid of acrolein can be written as:
Among the following acid which has the lowest $$pK_a$$ ?
  • $$CH_3CH_2COOH$$
  • $$(CH_3)_2CH-COOH$$
  • $$HCOOH$$
  • $$CH_3COOH$$
Aldehydes on oxidation gives_________
  • Alcohol
  • Acid
  • Ketone
  • Ether
The acid used in the making of vinegar is:
  • formic acid
  • acetic acid
  • sulphuric acid
  • nitric acid

$$A$$ reacts with $$NaOI$$ followed by the reaction with $$H^+$$ to give $$3,\,4-$$dihydroxybenzoic acid. What is $$A$$ ?
306081_554fb255a09a440aa67b76c3a9e418a6.png
In deodorant soaps, the additive added is:
  • glycerol
  • stearic acid
  • potassium bicarbonate
  • 3,4,5-tribromo salicylaldehyde
Quinaine is obtained from-
  • Bark
  • Fruit
  • Leaves
  • Roots
Chlorinaton of toluene in the presence of light and heat followed by treatment with aqueous NaOH gives
  • o-cresol
  • p-cresol
  • salt
  • benzoic acid
Identify the compounds which give yellow precipitate with $${I}_{2}+NaOH$$
(a) Ethyl alcohol   (b) Acetone
(c) Propyl alcohol   (d) 2-propanol
(e) 3- butanone     (f) Butanal
  • c, e and f
  • a, d and f
  • e, f and a
  • a, b and d
Oxalic acid is found in:
  • spinach
  • amla
  • grapes
  • unripe mangoes
In the sequence of reaction: $$C_2H_2\xrightarrow[HgSO_4]{H_2SO_4}A\overset{[O]}{\longrightarrow}B$$ 
The compound B is:
  • ethanoic acid
  • propanone
  • ethanol
  • methanal
You can make an organic acid from ethanol and that is:
  • $$\displaystyle { C }_{ 3 }{ H }_{ 7 }OH$$
  • found in bees and ants
  • acetic acid
  • formic acid
  • butanoic acid
The $$\displaystyle p{ K }_{ a }$$ values of four carboxylic acids are given below. Identify the weakest carboxylic acid.
  • 4.89
  • 1.28
  • 4.76
  • 2.56
$${ CH }_{ 3 }CHO+HCHO\xrightarrow [ Dil.\ NaOH ]{ Heat } A\xrightarrow [ HCN ]{ { { H }_{ 3 }O }^{ + } } B$$

The structure of compound $$B$$ is :
  • $$CH_3-\underset{OH}{\underset{|}{C}H}-COOH$$
  • $$CH_2=CH-\underset{CN}{\underset{|}{C}H}-OH$$
  • $$CH_3CH_2-\underset{OH}{\underset{|}{C}H}-COOH$$
  • $$CH_2=CH-\underset{OH}{\underset{|}{C}H}-COOH$$
A tripeptide is written as glycine-alanine-glycine. The correct structure of the tripeptide is:
Ethyl ethanoate on reacting with excess of $${CH}_{3}MgBr$$ will give
  • acetone
  • 2-methyl-2-propanol
  • isobutanol
  • n-butyl alcohol
Aspirin is:
  • Acetyl salicylic acid
  • Benzoyl salicylic acid
  • Chloro benzoic acid
  • Anthranilic acid
Which of the following acids is hydroxy acid?
  • Maleic acid
  • Succinic acid
  • Lactic acid
  • Adipic acid
The solubility of water decreases rapidly with the increase in the size of ------------ groups attached to carbonyl group.
  • alkyl
  • aryl
  • phenyl
  • benzyl
Structure of ethanoic acid is:
  • $$\displaystyle { CH }_{ 3 }-{ CH }_{ 2 }-{ CH }_{ 3 }$$
  • $$\displaystyle CH_3-\underset {\displaystyle \underset {\displaystyle O}{ ||}}{C}-OH$$
  • $$\displaystyle { CH }_{ 3 }-O-{ C }_{ 3 }{ H }_{ 7 }$$
  • $$\displaystyle CH_3-\underset {\displaystyle \underset {\displaystyle O}{ ||}}{C}-CH_3$$
  • $$\displaystyle CH_3 - CH_2- NH_2$$
What is the product of the following reaction?

508567_a481285af02b403bbadafb9f91085957.png
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
Aldehydes and ketones with ______ or more carbon atoms are either sparingly soluble or insoluble in water.
  • 5
  • 6
  • 7
  • 8
The organic acid that can be made from ethanol is:
  • acetic acid
  • formic acid
  • $$C_{3}H_{7}OH$$
  • valeric acid
  • butanoic acid
The general formula of carboxylic acids is:
  • $$C_nH_nCOOH$$
  • $$C_nH_{2n-1}$$
  • $$C_nH_{2n-2}COOH$$
  • $$C_nH_{2n+1}COOH$$
Carbonyl group of aldehyde and ketone contain ________ groups.
  • carbon and oxygen
  • carbon and nitrogen
  • carbon and sulphur
  • none of these
Acetyl chloride cannot be obtained by treating acetic acid with:
  • $$CHCl_3$$
  • $$PCl_3$$
  • $$PCl_5$$
  • $$SOCl_2$$
Which of the following compounds are not soluble in water?
  • Formaldehyde
  • Acetaldehyde
  • Acetone
  • None of the above
$$CH_3-\overset{NH_2}{\overset{|}{C}H}-COOH$$

IUPAC name of the given compound is:
  • propanamine-oic acid
  • 2-Aminopropanoic acid
  • amino propanoic acid
  • none of these
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