MCQ Questions for Class 12 Medical Chemistry Alcohols, Phenols And Ethers Quiz 2

The number of dihydric phenols possible with the molecular formula $$C_6H_6O_2$$ is

0%
2
0%
3
0%
4
0%
5

Alkyl halides can be converted to ethers through:

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Frankland reaction
0%
Williamson synthesis
0%
Fitting reaction
0%
Grignard reaction

In the dehydration reaction , $$^{18}O$$ will be in

0%
$$H_2O$$
0%
A
0%
Both (A) and (B)
0%
None of these

Correct order of basic strength:

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$$C{ H }_{ 3 }N{ H }_{ 2 } > C{ H }_{ 3 }-\overset { \oplus }{ N } { H }_{ 3 }>C{ H }_{ 3 }-\overset { \circleddash }{ N } H$$
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$$\overset { \circleddash }{ O } H > C{ H }_{ 3 }CO\overset { \circleddash }{ _2 } >C{ l }^{ \circleddash }$$
0%
$$C{ H }_{ 3 }N{ H }_{ 2 } > C{ H }_{ 3 }-\overset { \oplus }{ N } { H }_{ 3 }>C{ H }_{ 3 }-CH_2-\overset { \circleddash }{ N } H$$
0%
$$CH_{3}CH_{2}NH_{2} > CH_{2}=CH-NH_{2} > HC \equiv C-\overset{ \circleddash }{ N }H$$

$$ (a)\quad Secondary\quad alcohol\quad \xrightarrow [ \Delta ]{ H_{ 3 }PO_{ 4 } } $$

$$ (b)\quad Tertiary\quad alcohol\quad \xrightarrow [ \Delta ]{ H_{ 3 }PO_{ 4 } } $$
For the above dehydration reaction rate of reaction will be:

0%
a > b
0%
a < b
0%
a = b
0%
None

Substrate that readily do not show $$E_1$$ reaction is:

During steam distillation of a mixture of o- nitrophenol and p- nitrophenol, which of the statement is false?

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Vapours of o-nitrophenol are carried by steam because of its lower boiling point due to chelation
0%
vapours of o- nitrophenols are carried by steam because of its lower boiling point and solubility in steam
0%
Vapours of p-nitrophenol are carried by steam because of its lower boiling point
0%
both 2 and 3

The IUPAC name of the given acid is:

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1, 2, 3-propane tricarboxylic acid
0%
3-hydroxy-1, 5-pentanendioic acid
0%
3-hydroxy-3-keto-1, 5-pentanedioic acid
0%
1, 3, 5-trihydroxypentane-1, 5-dione

Identify the compound $$'Y"$$ in the following sequence of reaction:

$$HC \equiv CH \xrightarrow[ii) H_2O/Zn]{i) O_3} X \xrightarrow{Zn/CH_3COOH} Y$$

0%
0%
0%
0%
$$CH_{3}COOH$$

Consider the given reaction
Identify alkene.

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$$CH_{3} - CH_{2} - CH = CH_{2}$$
0%
$$CH_{3} - CH = CH - CH_{3}$$
0%
$$(CH_{3})_{2}C = C(CH_{3})_{2}$$
0%
$$CH_{3} - CH = \underset {\underset {CH_{3}}{|}}{C} - CH_{3}$$

IUPAC name of compound is:

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5-ethyl-3,3-dimethyl cyclohex-en-6-ol
0%
6-Ethyl-4,4-dimethyl cyclohex-2-en-1-ol
0%
2-ethyl-4,4-dimethyl cyclohex-en--enol
0%
6-ethyl-4,4-dimethyl cyclohexenol

.How many number of compounds, which have same IUPAC name?

0%
$$0$$
0%
$$1$$
0%
$$2$$
0%
$$3$$

The structure of compound P is :

_____________ is prepared on a large seals from water gas.

0%
Methanol
0%
Ethanal
0%
Methane
0%
Ethanol

The_____ ethers are highly volatile and flammable.

0%
Higher
0%
Lower
0%
Both A and B
0%
None of these

Methanol cannot be prepared by the hydration of an alkene.

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True
0%
False

Rate of dehydration when given compound is treated with conc, $${ H }_{ 2 }{ SO }_{ 4 }$$.

0%
P > Q > R > S
0%
Q > P > R > S
0%
R > Q > P > S
0%
R > Q > S > P

The compounds A and B in the following reaction are ________ respectively.

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A = Benzyl alcohol, B = Benzyl cyaninde
0%
A = Benzyl chloride, B = benzyl cyanide
0%
A = benzyl alcohol, B = Benzyl isocyanide
0%
none of these

Find the product:

Identify major products $$r_1,r_2 $$ and $$r_3$$ in the given reaction.

In the reaction sequence,

$$2CH_{3}CHO \xrightarrow []{OH^{-}}A\xrightarrow []{\Delta}B\ ;$$

the product $$B$$ is:

0%
$$CH_{3}-CH_{2}-CH_{2}-CH_{2}-OH$$
0%
$$CH_{3}-CH=CH-CHO$$
0%
$$CH_{3}-CH_{2}-CH_{2}-CH_{3}$$
0%
$$CH_3-\overset {\displaystyle {\overset {\displaystyle O} {||}}}{C}-CH_3$$

In the above reaction X is

0%
phenol
0%
benzoic acid
0%
salicylaldehyde
0%
carbonic acid

$$(CH_{3})_{2}CHCH_{3} $$ $$\underrightarrow { HN{ O }_{ 2 } } $$ ?

0%
$$n-$$butyl alcohol
0%
isobutyl alcohol
0%
tetiary butyl alcohol
0%
secondary butyl alcohol

ortho-Nitrophenol is less soluble in water than p- and m-Nitrophenol because:

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Melting point of o-nitrophenol is lower than of m- and p- isomers
0%
o-Nitrophenol is more volatile in steam than those of m- and p- isomers
0%
o- Nitrophenol shows intramolecular H- bonding
0%
o- Nitrophenol shows intermolecular H- bonding

Molecule which does not oxidise using PCC

Which one of the following compounds will be most readily dehydrated?

Dehydration of following alcohols follows the order:

0%
$$I<II<III<IV$$
0%
$$II<III<I<IV$$
0%
$$I<II<IV<III$$
0%
$$III<I<II<IV$$

Predict $$B$$:

0%
0%
0%
0%
All of these

Identify the dehydration product in the following compound?

0%
0%
0%
both (a) and (b)
0%
None of these

Which of the following alcohols can be prepared by direct hydration of the corresponding alkene in presence of 50% sulphuric acid?

0%
Butan-1-ol
0%
Butan-2-ol
0%
2-Methylpropan -1-ol
0%
2-Methylpropan-2-ol

Which of the following compounds will most readily be dehydrated to give alkene under acidic condition?

0%
2-Hydroxycyclopentanone
0%
1-Pentanol
0%
3-Hydroxypentan-2-one
0%
4-Hydroxypentan-2-one

The organic compound that gives the following qualitative analysis is:

Test	Inference
(a) Dil. $$HCl$$	Insoluble
(b) $$NaOH$$ solution	soluble
(c) $${Br}_{2}$$/water	Decolourization

Which of the following is not the product of dehydration of :

Compound $$A, C_{8}H_{10}O$$, is found to react with $$NaOI$$ (produced by reacting $$Y$$ with $$NaOH$$) and yields a yellow precipitate with characteristic smell.
$$A$$ and $$Y$$ are respectively are:

The compound $$A$$ on treatment with $$Na$$ gives $$B$$, and with $$PCl_{5}$$ gives $$C. B$$ and $$C$$ react together to give diethyl ether. $$A, B$$ and $$C$$ are in the order.