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NEET Chemistry MCQ
Alcohols, Phenols And Ethers Mcq Neet Chemistry
Quiz 15
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Q.1
The reaction of CH3OC2H5 with HI gives .... ...
0%
a) CH3I only
0%
b) CH3I + C2H5OH
0%
c) C2H5OH only
0%
d) CH3I only
Explanation
CH3C2H5 + HI → CH3I + C2H5OH O-atom goes with higher alkyl group Answer : (b)
Q.2
Diethyl ether finds its use in medicine as .... .....
0%
a) hypnotic
0%
b) antiseptic
0%
c) pain killer
0%
d) anaesthetic
Explanation
Answer : (d)
Q.3
Which compound is capable of strong hydrogen bonding?
0%
a) C2H5OH
0%
b) C3H7OH
0%
c) C4H9OH
0%
d) C5H11OH
Explanation
An increasing in hydrophobic character decreases H-bonding Answer : (a)
Q.4
Carbinol is the trivial name for .... ....
0%
a) (CH3)3COH
0%
b) C2H5OH
0%
c) CH3OH
0%
d) CH3CH2CHOHCH3
Explanation
CH3OH is carbinol; CH3CH2OH is methyl carbinol and so on Answer : (c)
Q.5
han One Correct Answer Q426) The ether C6H5-O-CH2-C6H5 when treated with HI produce(s)
0%
a) C6H5CH2I
0%
b) C6H5CH2OH
0%
c) C6H5I
0%
d) C6H5OH
Explanation
Answer : (a and d )
Q.6
In which of the following bond angles on sp3-hybridized are not contracted due to lone pair of electron?
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a) H2O
0%
b) CH3OH
0%
c) OF2
0%
d) CH3OCH3
Explanation
Answer : (d)
Q.7
Physical properties of ....
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a) H2O lie between alcohols and alkenes
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b) alkenes lie between alcohol and H2O
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c) alcohols lie between alkanes and H2O
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d) none of the above
Explanation
Answer : (c)
Q.8
Phenol is .... .....
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a) neutral
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b) an acid weaker than carbonic acid
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c) an acid stronger than carbonic acid
0%
d) a base weaker than NH3
Explanation
Answer : (b)
Q.9
Ethanol is more soluble in water but ether is less soluble because .... .....
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a) ethanol forms strong hydrogen bonds in water where as ether forms weaker hydrogen bonding
0%
b) ether is more volatile than ethanol
0%
c) the molar mass of ether is more than of ethanol
0%
d) none of the above
Explanation
ether have two alkyl group thus hydrophobic character more than H-bonding Answer : (a)
Q.10
Assertion: Alcohols give only substitution products with HX and not elimination product Reason: X- is a very weak base which cannot abstract protons from alcohol
0%
a) Both Assertion and Reason are true and Reason is the correct explanation of Assertion
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b) The Assertion and Reason are true but Reason is not correct explanation of Assertion
0%
c) Assertion is true but, Reason is false
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d) Assertion is false but, Reason is true
Explanation
Answer : (a)
Q.11
Acetone on reduction gives .... .....
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a) CH3CHO
0%
b) C2H5OH
0%
c) (CH3)2CHOH
0%
d) CH3COOH
Explanation
Answer : (c)
Q.12
on Q433) Identify Z in the series
0%
a) C2H5I
0%
b) C2H5OH
0%
c) CHI3
0%
d) CH3CHO
Explanation
Answer : (c)
Q.13
Diethyl ether is soluble in .... ...
0%
a) dilute HCl
0%
b) conc. H2SO4
0%
c) conc. KOH
0%
d) water
Explanation
Soluble in strong acids ethers are Lewis base Answer : (b)
Q.14
Action of nitrous acid on ethyl amine gives .... .....
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a) C2H6
0%
b) C2H5OH
0%
c) NH3
0%
d) nitromethane
Explanation
C2H5NH2 + HO - N = O → C2H5OH + N2 + H2O Answer : (b)
Q.15
Nobel's oil is ... ...
0%
a) detergent
0%
b) insecticide
0%
c) fire extinguisher
0%
d) explosive
Explanation
Answer : (d)
Q.16
Diethyl ether is decomposed on heating with .... ...
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a) NaOH
0%
b) HI
0%
c) water
0%
d) KMnO4
Explanation
C2H5OC2H5 + HI → 2C2H5I + H2O Answer : (b)
Q.17
Ethyl alcohol reacts with following to form a compound of fruity smell
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a) K2Cr2O7 + H2SO4
0%
b) PCl5
0%
c) CH3COOH
0%
d) CH3COCH3
Explanation
C2H5OH + HOOCCH3 → C2H5OOCCH3 Ester possess fruit smell Answer : (c)
Q.18
han One Correct Answer Q439) Phosphorus pentachloride react(s) with
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a) alcohols
0%
b) ketones
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c) ethers
0%
d) amines
Explanation
Answer : (a, b and c )
Q.19
on Q440) The product of the reaction is .... ..
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a)
0%
b)
0%
c)
0%
d)
Explanation
Answer : (c)
Q.20
Primary amine on treatment with NaNO2 and HCl yield
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a) Primary alcohol
0%
b) secondary alcohol
0%
c) ammonia
0%
d) nitro compound
Explanation
Answer : (a)
Q.21
Acetylene and formaldehyde interact in the presence of copper acetylide as a catalyst to furnish the compound .... ...
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a) butyne-1, 4-diol
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b) butyne-2
0%
c) ethylele-1, 4-diol
0%
d) none of these
Explanation
CH ≡CH + 2HCHO → CH2OHC ≡C-CH2OH This reaction is ethinylation. The catalyst used are copper acetylide or sodium alkoxide Answer : (a)
Q.22
When glycerol is treated with a mixture of excess of conc.HNO3 and H2SO4, the compound formed is .... ....
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a) glycerol trinitrate
0%
b) glycerol dinitrate
0%
c) acrolein
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d) glycerol mononitrate
Explanation
Answer : (a)
Q.23
han One Correct Answer Q444) Ethyl alcohol on oxidation with K2Cr2O7 gives(s)
0%
a) formic acid
0%
b) formaldehyde
0%
c) acetic acid
0%
d) acetaldehyde
Explanation
Answer : (c,d)
Q.24
Widespread deaths due to liquor poisoning occurs due to presence of .... .....
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a) lead compounds in liquor
0%
b) methyl alcohol in liquor
0%
c) ethyl alcohol in liquor
0%
d) carbonic acid in liquor
Explanation
Answer : (b)
Q.25
Diethyl ether on reaction with CO in specific conditions forms ... .....
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a) acetyl chloride
0%
b) carbon dioxide
0%
c) acetic acid
0%
d) ethyl propanoate
Explanation
Answer : (d)
Q.26
Proof spirit contains about ... ...
0%
a) 5% alcohol by mass
0%
b) 10% alcohol by mass
0%
c) 48% alcohol by mass
0%
d) 98% alcohol by mass
Explanation
The percentage of alcohol is pressed as proof spirit for tax purpose. It contains 57.1% ( by volume) or 48% ( by mass) of alcohol Answer : (c)
Q.27
Ethyl alcohol is also known as .... ...
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a) spirit of wine
0%
b) grain alcohol
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c) methyl carbinol
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d) all of these
Explanation
Answer : (d)
Q.28
Ethyl iodide on treatment with dry Ag2O will yield
0%
a) ethylene
0%
b) diethyl ether
0%
c) ethyl methyl ether
0%
d) ethyl alcohol
Explanation
2C2H5I + Ag2O → C2H5OC2H5 Answer : (b)
Q.29
The first oxidation product of primary alcohol is .......
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a) an ester
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b) a hydrocarbon
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c) a ketone
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d) aldehydes
Explanation
Ist oxidation of primary alcohol aldehyde and further second oxidation will give acid with same number of carbon atom Answer : (d)
Q.30
The cleavage of an aryl-alkyl ether with hydrogen halide will give .... .....
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a) a molecules each of an alkyl halide and water
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b) a molecule each of an aryl halide and water
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c) a molecule each of an alkyl halide, aryl halide and water
0%
d) a molecule each of phenol and an alkyl halid
Explanation
Answer : (d)
0 h : 0 m : 1 s
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