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12th Chemistry Weekly Test - 4 ( Carbonyl Compounds and Carboxylic Acids )

St. Britto Hr. Sec. School - Madurai

12th Chemistry Weekly Test - 4 ( Carbonyl Compounds and Carboxylic Acids )-Aug 2020

Time : 1.00 Hours

Part - A

Multiple Choice Question - Answer All Question

Which of the following is least acidic

C₂H₅OH
CH₃COOH
C₆H₅OH
C1CH₂COOH

The number of N-N bond in urotropine is

6
4
2
0

Toluene on oxidation with acidified KMnO₄ gives _______.

benzoic acid
salicylic acid
o-toluic acid
anthranilic acid

Complete the reaction \(CH3-CHOH\\ \quad \quad \ \quad |\qquad \quad \quad \xrightarrow [ ? ]{\quad HIO_{ 4 } \quad } X\\ CH3-CHOH\) is _________

CH₃COCH₃
CH₃CHO
C₆H₅CHO
\(CH_{ 3 }-C-CH-CHO\\ \quad \ \ \quad \quad |\\ \quad \quad \quad \ CH_{ 3 }\)

Which compound on strong oxidation gives propionic add?

\(CH_{ 3 }-CH-CH_{ 3 }\\ \ \ \quad \quad \quad |\\ \quad \quad \quad OH\)
CH₃-CO-CH₃
CH₃CH₂CH₂OH

Ester formation involves the reaction of

an aldehyde and a ketone.
an alcohol with RMgX.
two molecules of an acid with dehydrating agent
An acylhalide with an alcohol

The organic compound whose boiling point is 452K and has the smell of bitter almond is

HCHO
CH₃CHO
C₆H₅CHO
C₆H₅CH₂CHO

Lower members of carboxylic acid family are

waxy solids.
pleasant smelling liquids.
foul smelling liquids.
inert gases.

Predict the product Z in the following series of reactions
\(Ethanoic\quad acid\xrightarrow { { PCl }_{ 3 } } X\xrightarrow [ { AnhydrousAlCl }_{ 3 } ]{ { C }_{ 6 }{ H }_{ 6 } } Y\xrightarrow [ { (ii)H }_{ 3 }{ O }^{ + } ]{ { (i)CH }_{ 3 }MgBr } Z.\)

(CH₃)₂C(OH)C₆H₅
CH₃CH(OH)C₆H₅
CH₃CH(OH)CH₂ - CH₃

\(CH_{ 2 }={ CH }_{ 2 }\xrightarrow [ (ii){ Zn/H }_{ 2 }O ]{ (i)O_{ 3 } } X\xrightarrow { { NH }_{ 3 } } Y\) 'Y' is

Formaldelyde
diacetoneammonia
hexamethylenetetraamine
oxime

In the following reaction,
\(HC\equiv CH\xrightarrow [ Hg{ SO }_{ 4 } ]{ { H }_{ 2 }{ SO }_{ 4 } } \)
X Product 'X' will not give

Tollen's test
Victor meyer test
Iodoform test
Fehling solution test

Benzoin condensation is carried out in the presence of

alc. KCN
alc.KOH
acidified KCN
both (a) and (c)

Aldehydes are functional isomers of

ethers
alcohols
ketones
esters

LiAIH₄ and NaBH₄ are

H⁺ donor
H^-donor
H^-acceptor
None

In Rosenmund's reduction, BaSO₄ is used

to increase the activity of Pd catalyst
to increase the activity of Fe catalyst
to lower the activity of Pt catalyst
to lower the activity of Pd catalyst

Esters have a _______ odour.

fishy
fruity
garlic
carbolic

Grignard reagent on addition with dry ice followed by hydrolysis gives _______.

aldehydes artd acids
only ketones
aldehydes and ketones
only carboxylic acids

During reduction of aldehydes with hydrazine and C₂H₅ONa, the product formed is _________

R - CH = N - NH₂
R - C = N
R - CH₃

Identify which of the following compounds would give positive iodoform test.

Toluene is oxidised by acidified KMnO₄ to

salicylic acid
benzyl alcohol
benzaldehyde
benzoic acid

4- methyl pent- 3 ene- 2 - one is the IUPAC name of

mesitylene
mesityl oxide
phorone
chloretone

6 - 8% solution of acetic acid in water is called ______ .

Vinegar
Glacial acetic acid
Formalin
Both (a) and (b)

The number of carbon atoms in a chain can be increased with _______ reaction.

Grignard
Cannizaro reaction
HVZ
Clemmensen

\(Ethanoic\ acid\xrightarrow { { P/Br }_{ 2 } } \) bromoethanoic acid. This reaction is called

Finkelstein reaction
Haloform reaction
Hell- Volhard- Zelinsky reaction
none of these

\(Benzoic\ acidXY\xrightarrow [ { (ii) }\Delta ]{ { (i)NH }_{ 3 } } A\xrightarrow { NaOBR } B\xrightarrow { { NaNO }_{ 2 }/HCl } C'C'\quad is\)

anilinium chloride
0 - nitro aniline
benzene diazonium chloride
m- nitro benzoic acid

Ketones when reduced in the presence of Pt forms

primary alcohols
secondary alcohols
tertiary alcohols
acids

Which order of arrangement is correct in terms of the strength of the acid

CH₃-CH₂COOH > CH₃COOH < HCOOH < ClCH₂COOH
ClCH₂COOH < HCOOH < CH₃COOH < CH₃CH₂COOH
CH₃-CH₂COOH <CH₃COOH < HCOOH < ClCH₂COOH
HCOOH > CH₃CH₂COOH < CH₃COOH > ClCH₂COOH

Pick out the compound that reduces Tollen's reagent and Fehling's solution.

CH₃CHO
CH₃COCH₃
CH₃COOH
both (a) and (b)

Assertion: 2, 2 - dimethyl propanoic acid does not give HVZ reaction.
Reason : 2 - 2, dimethyl propanoic acid does not have - - hydrogen atom

if both assertion and reason are true and reason is the correct explanation of assertion.
if both assertion and reason are true but reason is not the correct explanation of assertion.
assertion is true but reason is false
both assertion and reason are false.

Acetic acid undergoes dehydration on heating with P₂O₅ to form

CH₃COOCH₃
CH₃OH
(CH₃CO)₂O
none ofthe a.bove

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