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

Final product $$(B)$$ will be :

992779_81ef052e67974e338341121f10cf85dd.png
Number of intramolecular aldol condensation product is:
992197_b39d148061b342c58a6bbd4bb1823e71.JPG
  • 1
  • 2
  • 3
  • 4
Methyl vinyl ketone on reaction with $$LiCuMe_2$$ gives a major product, whose structure is:
Product (P) of the reaction is :
991996_c23d79d4d73b47ecb5502d204fab845b.png
The correct order of rate of reaction toward nucleophilic addition reaction.
991986_c0ead192757244f99361e278031b11f6.jpg
  • a $$>$$ b $$>$$ c $$>$$ d $$>$$ e
  • a $$>$$ b $$>$$ d $$>$$ c $$>$$ e
  • a $$>$$ d $$>$$ e $$>$$ b $$>$$ c
  • a $$>$$ b $$>$$ e $$>$$ d $$>$$ c
The final product of the following sequence of reaction is?
$$(CH_3O)_2CHCH_2CH_2CH_2Br\overset{Mg}{\rightarrow}\overset{H_2C=O}{\rightarrow}\overset{H_3O^+}{\underset{heat}{\rightarrow}}$$
  • $$CH_3O\overset{O}{\overset{||}{C}}CH_2CH_2CH_2CH_2OH$$
  • $$CH_3\overset{O}{\overset{||}{C}}CH_2CH_2CH_2CH_2OH$$
  • $$H\overset{O}{\overset{||}{C}}CH_2CH_2CH_2CH_2OH$$
  • $$H\overset{O}{\overset{||}{C}}CH_2CH_2CH_2\overset{O}{\overset{||}{C}}H$$
Product (A) is?
992201_d707b75eb1564499bbec8f7a946c5d44.png
Which one of the following compounds is the best choice for being prepared by an efficient mixed aldol addition reaction?
Given the best condition for this transformation:
993116_37863131278e4d8c8f6f542ecb43437f.png
  • $$CH_{3}OH,H^{+}$$(cat.), heat
  • $$H_{2}O,H_{+}$$(cat.), heat
  • $$Mg, ether, CH_{3}OH$$
  • $$SOCl_{2}, CH_{3}OH$$
The IUPAC name of the compound is:
996334_1251a63fb6334936b46986303f576800.jpg
  • but-$$1$$-en-$$4$$-oic acid
  • $$1$$-hydroxybut-$$2$$-en-$$1$$-one
  • but-$$2$$-en-$$1$$-oic acid
  • but-$$2$$-en-$$4$$-oic acid
Which of the following reagent is used for the separation of acetaldehyde from acetophenone?
  • $$NH_2OH$$
  • $$NaOl$$
  • Tollen's reagent
  • $$C_6H_5NHNH_2$$
The IUPAC name of the compound is:
996344_361a3b6e14614771a78175d155973aa4.PNG
  • $$2$$-Methylbutan - $$3$$ - one
  • $$3$$-Methylbutan - $$2$$ - al
  • $$2$$-Methylbutan - $$3$$ - al
  • $$3$$-Methylbutan - $$2$$ - one
What combination of acid chloride or anhydride and arene would you choose to prepare given compound?
993482_1ba9a5672a244c1dbacc68146486a678.jpg
Which of the following sets of reagents, used in the order shown , would successfully accomplish the conversion shown ?
993278_9c5066d7fb7b4a42a9d7b5797a5aa6d3.png
  • $$CH_{ 3 }CH_{ 2 }CH_{ 2 }MgBr$$; $$H_{ 3 } O^{ + }$$; $$PCC$$, $$CH_{ 2 }CI_{ 2 }$$
  • $$CH_{ 3 }CH_{ 2 }CH_{ 2 }MgBr$$; $$H_{ 3 }O^{ + }$$; $$H_{ 2 }SO_{ 4 }$$, $$heat\ PCC, CH_{ 2 }CI_{ 2 }$$
  • $$(C_{ 6 }H_{ 5 })_{ 3 } \overset { + }{ P } -\overset { - }{ C } HCH_{ 2 }CH_{ 3 }$$, $$B_{ 2 }H_{ 6 }$$; $$CH_{ 3 }CO_{ 2 }H$$
  • $$(C_{ 6 }H_{ 5 })_{ 3 } \overset { + }{ P } -\overset { - }{ C } HCH_{ 2 }CH_{ 3 }$$; $$H_{ 2 }O$$
n-Butylbenzene on oxidation with hot alkanine $$KMnO_4$$ gives:
  • Benzoic acid
  • Butanoic acid
  • Benzyl alcohol
  • Benzaldehyde
Reaction - (1) : $$CH_{3} - CH = CH - CH_{3} \xrightarrow [ Cold ]{ KMn{ O }_{ 4 } } \left( A \right) \xrightarrow [  ]{ NaI{ O }_{ 4 } } \left( B \right) \ 2\ mole$$


Reaction - (2) : $$CH_{3} - CH = CH - CH_{3} \xrightarrow [  ]{ KMn{ O }_{ 4 }/NaIO_{4} } \left( A \right) \xrightarrow [  ]{ NaI{ O }_{ 4 } } \left( B \right) \ 2\ mole$$

Products $$(B)$$ and $$(C)$$, respectively, are :
  • $$CH_{ 3 }CHO, CH_{ 3 }CO_{ 2 }H$$
  • $$CH_{ 3 }CO_{ 2 }H, CH_{ 3 }CHO$$
  • $$CH_{ 3 }CHO$$ in both reaction
  • $$CH_{ 3 }CO_{ 2 }H$$ in both reaction
Identify the position where electrophilic aromatic substitution(EAS) is most favourable.
993426_6625f7997f8a418384fc73579642be14.jpg
  • A
  • B
  • C
  • A and C
The IUPAC name of the compound is:

996503_065907f945c34251b820da670ab227f7.jpg
  • $$2$$-hydroxypropanoic acid
  • $$1$$-hydroxypropanoic acid
  • $$1$$-hydroxyehtane carboxylic acid
  • $$1$$-hydroxyethanoic acid
The IUPAC name of $$NC - CH_2 - CH_2 - COOH$$ is:
  • $$3$$- carboxy propanenitrile
  • $$4$$- cyanobutanoic acid
  • $$2$$- cyanomethane Carboxylic acid
  • $$3$$- cyanopropanoic acid
An organic compound, $$C_3H_8O$$ does not give a precipitate with $$2,4$$-dinitrophenyl hydrazine reagent and does not react with metallic sodium. It could be:
  • $$CH_3-CH_2-CHO$$
  • $$CH_2=CH-CH_2OH$$
  • $$CH_3-O-CH_3$$
  • $$CH_2=CH-O-CH_3$$
The most possible product is:
1068383_544134b87b74471585be399e24bcf195.png
The product of the reaction $$X$$ will be:
1067397_13e1e35046234d8ea7863cfd553b6d70.png
  • $$C_{6}H_{5}-CH=CH-COOH$$
The correct name of the given compound :
$${ CH }_{ 3 }-\overset { \underset { | }{ H }  }{ \underset { \overset { | }{ OH }  }{ C }  } -{ COOH }$$
  • glycoxal
  • lactic acid
  • glycine
  • glyceraldehyde
What is the name of this following compound?
$$CH_3CH_2COCl$$ 
  • Butanoyl chloride
  • Propanoyl chloride
  • 1 chloro propanone
  • None of these
Carbonyl group is converted into methylene group by?
  • Acidic reduction
  • Raney Ni
  • Basic hydrolysis
  • Normal Hydrogenation
An organic compound containing $$-COOH$$ functional group is called:
  • aldehyde
  • ketone
  • amide
  • carboxylic acid
  
1067411_3ef4b043d84648708d2f5a63501b9fdf.png
The suitable reagent(s) will be:
1068087_d11dcca436634d528e88d7e9f0b0956a.png
  • $$CrO/{H}_{2}O/$$ acetone
  • $$[Ag(NH_3)_2)^{\oplus} (aqueous), H^+$$
  • $$CrO/HCl/$$ pyridine
  • $$\overset{\,\,\,\,\,\,\,\,\,\,\,\,\,\,COONa}{\overset{|}{\underset{\!\!\!\,\,\,\,\,\,\,\,\,\,\,\,COOK}{\underset{|}{(CHOH)_2}}}} + CuSO_4 + NaOH, \, H^+$$
Corrosive sublimate ($$Hg{Cl}_{2}$$) can be used to distinguish between:
  • formaldehyde and propanone
  • formic acid and acetic acid
  • acetaldehyde and butanone
  • all of the above
Which of the following compounds will give butanone on oxidation with alkaline $$KMn{O}_{4}$$ solution?
  • Butan-1-ol
  • Butan-2-ol
  • 2-methylpropan-2-ol
  • None of these
Odd one out among the following is:
  • Tartaric acid
  • Oxalic acid
  • Citric acid
  • Prussic acid
Structure of $$(x)$$ is:
1070942_37ec37375d8a477eb432a56e726f68b0.png
$$C$$. Compound $$(3)$$ is:
1071178_40351c48baae401090fa068054423c95.png
(i) $$H_3C-\overset{O}{\overset{||}{C}}-CH_3$$
(ii) $$H_3C-\overset{O}{\overset{||}{C}}-CH_2-\overset{O}{\overset{||}{C}}-CH_3$$
(iii) $$Ph-OH$$
(iv) $$H_3C-\overset{O}{\overset{||}{C}}-OH$$

Among the compounds the correct order of $$pKa$$ values are:
  • $$IV < III < II < I$$
  • $$IV < I < II < III$$
  • $$IV < II < III < I$$
  • $$IV < III < I < II$$
Most acidic hydrogen is present in :
  • $$(CH_{3}CO)_{3}CH$$
  • $$(CH_{3})_{3}COH$$
Which of the following reactions is/are not correct to get cinnamic acid?
  • $$C_{6}H_{5}CHO\xrightarrow [ \left( { CH }_{ 3 }CO \right) _{ 2 }O/CH_{ 3 }COONa ]{ } $$
  • $$C_{6}H_{5}CHO\xrightarrow[{2)H_{3}O^{+},\Delta} ] {1)CH_{2}(COOC_{2}H_{2})_{2},pyridine}$$
  • $$C_{6}H_{5}CHO\xrightarrow{CH_{3}CHO/OH^{-}}{}$$
  • $$C_{6}H_{5}CHO\xrightarrow[{2)H_{2}O/H^{+}/ \Delta}]{1)BrCH_{2}COOC_{2}H_{3}/ZnI \Delta}$$
Which will form two oximes with $$NH_{2}OH$$?
  • $$CH_{3}CHO$$
  • $$CH_{3}COCH_{2}CH_{3}$$
  • $$HCHO$$
  • $$CH_{3}COCH_{2}CH_{2}CH_{2}$$
$$CH_{3}CH=CHCHO\overset { { OH }^{ - } }{ \underset { Aldol }{ \longrightarrow  }  } {  }A$$, $$A$$ is?
  • $$CH_{3}(CH=CH)_{3}CHO$$
  • $$CH_{3}CH_{2}CH_{2}(CH=CH)_{2}CHO$$
  • $$CH_{3}(CH_{2}CH_{2})CH=CH-CHO$$
  • $$None\ of\ the\ above\ is\ correct$$
The correct order of $$K_{a}$$ is ?
(i)$$CH_{3}-CH_{2}-COOH$$
(ii)$$OHC-CH_{2}-COOH$$
(iii)$$Ph-CH_{2}-COOH$$
  • $$iii>ii>i$$
  • $$i>ii>iii$$
  • $$ii>iii>i$$
  • $$i>iii>ii$$

Select the best way for reducing the $$C=O$$ group in each of the following:
1093553_78a36f87aa9a4bc1b96cf52ce70beb42.png
The IUPAC name of ethyl isopropyl ketone is?
  • 4-methyl-3-pentanone
  • 1,1-dimethyl-2-butanone
  • 2-methyl-3-pentanone
  • 4,4-dimethyl-3-butanone
Which of the following set of reaction can not prepare $$R-\overset{O}{\overset{||}{C}}-OH$$ as the final product?
  • $$R-MgX + O = C = O \xrightarrow{dry. ether} A \xrightarrow{H_3O^+}$$
  • $$R-CN \xrightarrow[(ii) \, H_2O / H^+]{SnCl_2+HCl}$$
  • $$CH_3(CH_2)_8CH_2OH \xrightarrow[H_2SO_4]{CrO_3}$$
The product of following reaction is:
1075770_f3c685d171f64938a8d221314fbdc9f6.png
Which of the following molecules contain more enol content at equilibrium?
  • $$OHC - CH_2 - CHO$$
  • $$CH_3COCH_2COOCH_3$$
  • $$CH_2(COOH)_2$$
  • $$CH_3COCH_3$$
The acidity of alpha hydrogen of the carbonyl group is due to:
  • The aldehydes and ketones undergo a number of reactions due to the acidic nature of $$\alpha-hydrogen$$.
  • The acidity of $$\alpha-hydrogen$$ atoms of carbonyl compounds is due to the strong electron withdrawing effect of the carbonyl group and resonance stabilization of the conjugate base.
  • both A and B 
  • none of these
The order of acidity for the following compounds is:
1124770_9c69a9a73b504335b198f284a0cefcd4.png
  • $$I > II > III > IV$$
  • $$III > I > II > IV$$
  • $$I > IV > II > III$$
  • $$I > III > IV > II$$
Vinegar is :
  • $$HCHO$$
  • $$HCOOH$$
  • $$CH_{3}CHO$$
  • $$CH_{3}COOH$$
 
1127227_ea1bab457360458195a1d9e19d52aba0.png
Which of the following compounds will give acetic acid with $$KMnO_{4}/H^{\bigoplus }/\Delta  $$?
  • $$ CH_{3}-CHO $$
  • $$ CH_{3}-CH=CH- CH_{3}$$
  • $$ CH_{3}-C=C- CH_{3}$$
  • $$ CH_{2}CH_{2}OH $$
The IUPAC name of the following compound is 

$$HOOC-CH_{2}-CH_{2}-O-CH_{2}-CH_{2}-COOH$$
  • 3,2'-oxypropionic acid
  • 3,2'-oxybutanoic acid
  • 3,2'-dioxypropionic acid
  • 3,3'-oxypropionic acid
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