//M1//QN1//MCQ//DL0//EQ
is:36. The structure of ethyl isopropyl ether
is ______.
(A) 
(B) 
(C) 
37. What is the C-O-H bond angle in phenol?
38. What is the C-O-H bond angle in methanol?
39. What is the hybridization of O-atom in ether?
40. Which of the given compound does not release CO
2 gas on reaction with sodium carbonate?
41. What observation you will get on reaction of iso-butyl alcohol with anhydrous ZnCl
2 in presence of concentrated HCl?
42. Which product is obtained during slow step of dehydration reaction of alcohol?
43. Phenol + Ethanoyl chloride
X,
Identify X in this reaction.
44. Which of the given alcohol is least acidic?
45. What is IUPAC name of the product obtained by hydroboration-oxidation reaction of hex-1-ene?
46. How many mole of dihydrogen gas will be produce during the reaction of methanol with 23 gm of sodium metal?
47. The acidity of which compound is maximum?
48. (CH
3)
3C – OH Y,
the product Y is:49. The order of acidity of alcohol is:50. The correct ascending order of boiling point is:51. Which among the following alcohol has the least boiling point?52. X + RMgBr → Intermediate compound 
Neopentylalcohol.
Identify X in a given reaction.
53. X + R
1MgBr
→ Intermediate compound
Secondary pentylalcohol.
In the given reaction which of the following compound is not possible as X?
54. The product of a given reaction is:
(C) 
(D) 
55. In which of the given reaction the product obtained is alcohol and the number of carbon atoms of product is more than that of the reactant?
56. Aldehyde as a product can be obtained by which reaction of alcohol ?
57. Which catalyst is used in dehydration reaction of alcohol?
58. How much bromine will be used for complete bromination reaction of 47 g of phenol with bromine water? (The molecular masses of phenol and bromine are 94 and 160 g. Mole
–1 respectively)
59. If tertiary-pentyl alcohol is obtained on hydrolysis of an intermediate product which is obtained by reaction of Y with RMgX, then identify R and Y respectively.
60. The correct order of solubility in water for given compound is:
61. The products obtained on oxidation and reduction of phenol are respectively:
62. At laboratory temperature the Lucas reagent reacts faster with:
63. Which of the given mixture is useful for preparation of 3-methylbutan-2-ol?
64. If theoretically 28 liters H
2 gas is obtained on reaction of ethanol with Mg metal at STP and 20 g Mg metal remains unreacted, then initially how many grams of Mg metal has been taken in the reaction mixture? (Mg = 24)
65. The molecular formula of cumene is:
66. The product which is obtained on reduction of alcohol:
67. During dehydration of alcohol, the hybridization of –OH group containing carbon atom changes from ___ to ____.
68. The reaction of which of the given compounds is difficult with Lucas reagent?
69. If compound B is obtained on reaction of organic compound A with Na
2Cr
2O
7 and H
2SO
4, and ethyl alcohol is obtained on reduction of compound B with
, then compound A is:
70. On treating phenol with chloroform in the presence of sodium hydroxide salicyaldehyde is obtained. This reaction is known as:
71. Arrange the following compounds in descending order of their acidity.
72. Which among the following is most preferable reagent for the reaction
R – CH2 – OH → R – CHO?
73. Among the given reactions, in which reaction the product obtained is propan-2-ol?
(i) H2C == CH – CH3 + H2O 
(ii) CH3CHO 
(iii) HCHO 
(iv) H2C == CH – CH3 
74. Which product will be obtained on heating sodium phenoxide with ethyl iodide?
75. Which product will be obtained on passing the vapour of secondary alcohol over heated copper at 573K?
76. In which of the given compounds intramolecular hydrogen bonding is formed?
77. The reactivity order of alcohol with haloacid is:
(A) 1° > 2° > 3° (B) 3° > 2° > 1°78. Identify X and Y in the given reaction.
X 
Y 
p–Bromophenol79. Match the following:
80. The correct order of acidity is:
81. Which compound is useful for the preparation of analgesic?
82. In the reaction Phenol
p-Bromophenol,
the reagent ‘X’ is________.
83. Which of the following compound has the highest boiling point?
84. Chlorobenzene and phenol can be distinguished by ________.
85. How many primary alcohol are possible for the compound possessing molecular formula C
5H
11OH?
86. What is the final product? When phenol dissolved in aqueous solution of sodium hydroxide is heated with carbon dioxide gas at 398K temperature and 4-7 bar pressure?
87. Which reagent is used in hydroboration reaction?
88. Identify product of the following reaction:
CH3–CH2–CH2–CH=CH2 
Product89. The general molecular formula of homologous series of alcohol is?
90. Carbolic acid means:
91. By which of the following reactions ethanol and phenol will be distinguished?
92. R-OH + NaBr + H
2SO
4 → X + NaHSO
4+H
2O Identify product X in this reaction.
93. Which compound is more soluble in water?
94. In which of the given, intermolecular hydrogen bond is absent?
95. What is cumene?
96. Oxidation of which of the given alcohol is not possible?
97. Alkyl halide can be prepared by the reaction of alcohol with ________.
98. What is a by product of cumene method?
99. The other name of Aspirin is __________.
100. Picric acid means ________.
101. Lucas test is useful for which compound?
102. How many moles of bromine is required to obtain 2,4,6-tribromophenol from 94 g phenol?
103. Industrially ethanol is prepared by ________.
104. The preparation of alcohol from unsymmetrical alkene by acid catalysed hydration follows _______ rule.
105. Complete the following reaction:
106. 
(A) 
(C) 
107. By _______ propene converts in to
propan-1-ol.108. Which reagent is to be used to obtain
but-2-en-1-ol from but-2-enal?109. Complete the reaction : 
110. Q 
CH2 
P,
products P and Q respectively, are:
111. 
product ‘X’ of this reaction is:
112. 
113. 
114. 
115. The final product of the reaction of HCHO with C
2H
5MgI is _______.
116. _______ will be obtained on a reaction of acetone with methyl magnesium iodide.
117. 
118. Formaldehyde gives an additive product on a reaction with methyl magnesium iodide, which on hydrolysis gives _______.
119. Which is the major product obtained by hydrolysis of compound formed by reaction between acetaldehyde and ethyl magnesium bromide?
120. Which alcohol is obtained as a final product during the reaction of ketone with Grignard reagent?
121. Which alcohol is obtained by fermentation ?
122. By which enzyme, glucose and fructose convert into ethanol?
123. _______ is useful as an anti-freezing agent in automobile radiator.
124. Prop-1-ene is converted to propan-1-ol by oxidation, which of the following reagents can be considered best for this reaction?
125. CH
3–Br
A
B
C then, C = ______.126. What will we obtain on a reaction of methyl alcohol with 23 g Na? (Atomic mass of
Na = 23 g/mol)127. _______ can not react with sodium metal. 128. Give IUPAC name of ester product obtained by reaction of ethanol with acetic acid. 129. _______ will be obtained on oxidation of 2°-alcohol by chromic acid.130. 
131. If compound A of a molecular formula C4H10O gives ketone of a molecular formula C4H8O on oxidation, then what would be the possible structure of compound A? 132. _______ will be obtained on oxidation of
iso-propyl alcohol.133. An alcohol compound ‘A’ with molecular formula C3H8O on vigorous oxidation produces an acid B with a molecular formula C3H6O2, then alcohol A is most likely to be:134. ______ gives tert-butyl chloride on reaction with tert-butyl alcohol.135. Ketone will obtain on oxidation of _______.136. Complete the reaction: CH3CH2OH 
______.
Class 12 Chemistry (Part 2) 009
137. Complete the reaction:
Propan-2-ol 
_______.138. _______ dehydrates easily.
139. Which compound gives more stable carbocation?
(A) 
(B) 
(D) 
140. Which of the following is correct for dehydration of alcohol?
141. Which of the following alcohol gives corresponding alkyl chloride on reaction with conc. HCl + anhy. ZnCl
2 at normal temperature?
142. Ethanol
X
Y
Z. Then, Z = _______.
143. By which reagent n-propanol and iso-propyl alcohol can be distinguished chemically?
144. What will be obtained on catalytic dehydrogenation of primary alcohol?
145. HBr reacts faster with which of the given compound?
146. Which is the most suitable reagent for the conversion: R – CH
2 – OH
→ R – CHO.
147. CH
3CH
2OH
A
B
C
D. Then,
D = _______.
148. Which is the most suitable reagent to convert pent-3-en-2-ol into pent-3-en-2-one?
149. The reactivity order of hydrogen halide
for the reaction of alcohol with hydrogen halide is _______.150. Tertiary alcohol 
_______.151. The product obtained on reaction of sodium benzene sulphonate with NaOH followed by acidic hydrolysis is _______.152. Which product will be obtained during oxidation reaction of iso-propylbenzene with air in presence of dilute acid? 153. In the given reaction, the compounds A and B are respectively.
A 
B 154. Phenol is more acidic than alcohol because_______.
155. _______ is acidic amongst the given.
156. Choose the correct option for given statements. T = True statement, F = False statement
(i) Phenol is a weak acid. (ii) Phenol is an aromatic compound. (iii) Phenol produces CO2 gas on a reaction with Na2CO3. (iv) Phenol is soluble in NaOH.157. What will be obtained on heating phenol with Zn dust?
158. Complete the reaction:
_____.
159. What will be obtained on a reaction of sodium phenoxide with methyl iodide?
160. Picric acid is obtained on a nitration of which compound?
161. The product obtained on a reaction of phenol with conc. HNO
3 is:
162. Which of the following compounds is known as a picric acid?
163. Which product will be obtained on a reaction of phenol dissolved in a non polar solvent with Br
2 at 273-278K temperature?
164. How many moles of bromine is required to prepare 2,4,6-tribromophenol from 1 mole phenol?
165. What will be obtained on a reaction of phenol with bromine water at normal temperature?
166. Kolbe’s reaction is useful for preparation
of _________.167. The final product (Z) of following reaction is: Phenol 
X 
Y 
Z168. _______ reaction is useful for preparation of salicyaldehyde from phenol.169. From which of the following, salicylaldehyde can be prepared? 170. Phenol 
x 
y 
Z.171. How much bromine is required to convert 2 g phenol into 2,4,6-tribromophenol?
(Molecular mass: phenol = 94 and Br2 = 160 g
mole–1)172. The major final product obtained on a reaction of phenol with sodium hydroxide and carbon dioxide is ________.173. Which of the following compounds is most acidic?174. Identify correct order of acidity. (i) Phenol (ii) Methylphenol (iii) m-Nitrophenol (iv) p-Nitrophenol175. The compound obtained after the reaction of phenol with Zn is treated with propyl chloride by Friedel-Crafts reaction in presence of AlCl3 gives compound (B). B on oxidation in presence of air gives (C), then the structure of C is ______. 176. + CO2 
B 
C, the product ‘C’ of reaction is _______.177. o-Nitrophenol is less soluble in water than p-nitrophenol because:178. Which of the following evolves carbon dioxide on a reaction with sodium bicarbonate?179. Which of the following alcohol reacts faster during Lucas test? And by which mechanism?180. To obtain ethanol, fermentation of D-glucose is carried out by which enzyme?181. Which alcohol is produced from water gas? 182. Willamson synthesis is which type of reaction?183. Which product will we obtain on a reaction of ethanol with sulphuric acid at 413K temperature? 184. The product obtained on Friedel-Crafts methylation of methoxybenzene is ________. 185. Compound B is obtained on a reaction of compound A with Na, while compound C is obtained on a reaction of A with PCl3. Moreover, on a reaction of compound B with C forms diethyl ether, then identify compounds A, B and C respectively.186. The major products obtain on a heating of following compounds with HI are:
(A)
(B)
(C)
(D)
187. Which among the given pair of reagent will give anisole as a product?
188. Which of the following is not an isomer of anisole?
189. Alcohol possesses an isomerism with ______.
190. Anisole + X
→ p-bromoanisole. Identify reagent X in this reaction.
191. The preparation of ether by Williamson synthesis is ______ reaction.
192. The general formula of homologus series of ether is:
193. Complete the reaction:
2CH3CH2OH 
_______. 194. Which among the given pairs of reagent will give anisole as a product?
195. 
This reaction is known by which name?196. Which of the following compound does not react with sodium?
197. Which of the following ether produces methanol on a reaction with conc. HI?
(A) 
(B) 
(D) 
198. 
(Major product)
(A) 
(B) 
(C) 
(D) 
199. The reaction of solution of phenol prepared in sodium hydroxide with which compound is known as Williamson synthesis?
200. Which reaction is suitable for the preparation of tert-butylmethylether?
201. 202. Assertion : Phenols react with bromine water to give 2,4,6-tribromophenol as a white precipitate.
Reason : The -OH group in phenol strongly deactivates the benzene ring, making it sensitive to electrophilic substitution.
203. Assertion : Ethers are less reactive than alcohols toward nucleophiles.
Reason : Ethers lack an –OH group, which reduces their tendency to form hydrogen bonds.
204. Assertion : Primary alcohols can be oxidized to carboxylic acids in one step using strong oxidizing agents like KMnO
4.
Reason : Primary alcohols first oxidize to aldehydes, which are then further oxidized to carboxylic acids.
205. Assertion : Lucas reagent can distinguish between primary, secondary, and tertiary alcohols.
Reason : Lucas reagent reacts fastest with primary alcohols to form alkyl chlorides.
206. Assertion : Phenols are more acidic than ethanol.
Reason : The phenoxide ion formed after deprotonation of phenol is resonance stabilized, whereas the ethoxide ion is not.
207. Assertion : Methanol has a lower boiling point than ethanol.
Reason : Methanol molecules are incapable of forming intermolecular hydrogen bonds.
208. Assertion : Williamson’s synthesis is not suitable for preparing tert-butyl methyl ether.
Reason : Tertiary alkyl halides undergo elimination instead of substitution during Williamson’s synthesis.
209. Assertion : Phenol reacts with sodium hydroxide to form sodium phenoxide.
Reason : Phenol is more acidic than water.210. Assertion : Ethers can undergo cleavage with concentrated HI to form alcohols and alkyl iodides.
Reason : Ethers are highly reactive due to the lone pair of electrons on oxygen.
211. Assertion : Dehydration of ethanol at 443K produces ethene.
Reason : Ethanol reacts with concentrated H
2SO
4, which acts as a dehydrating agent.
212. Assertion : Phenol is soluble in water due to the formation of hydrogen bonds.
Reason : The -OH group in phenol allows intermolecular hydrogen bonding with water molecules.
213. Assertion : Boiling points of alcohols increase with an increase in molecular mass.
Reason : Higher molecular mass alcohols have stronger Van der Waals forces and more hydrogen bonding sites.
214. Assertion : The reaction of phenol with benzoyl chloride in the presence of NaOH gives phenyl benzoate.
Reason : Phenol reacts with benzoyl chloride via an electrophilic substitution mechanism.
215. Assertion : Methanol is more acidic than ethanol.
Reason : Methanol has a smaller alkyl group, which decreases the electron-donating inductive effect compared to ethanol.
216. Assertion : Ethers are good solvents for Grignard reagents.
Reason : Ethers can stabilize the Grignard reagent by coordinating with the magnesium atom through lone pairs on oxygen.
217. Assertion : Phenol reacts with FeCl
3 to give a violet-coloured complex.
Reason : The phenoxide ion forms a coordination complex with ferric ions.
218. Select the correct option using T (True) or F (False) symbol for the following statements.
(i) Alcohols exhibit higher boiling points than ethers of comparable molecular mass.
(ii) Phenols are more acidic than alcohols due to resonance stabilization of the phenoxide ion.
(iii) The oxidation of a primary alcohol gives a ketone.
(iv) Ethers are less reactive than alcohols due to the absence of the –OH group.
219. Select the correct option using T (True) or F (False) symbol for the following statements.
(i) Lucas test is used to distinguish between primary, secondary, and tertiary alcohols.
(ii) Phenols undergo electrophilic substitution more readily than benzene.
(iii) Methanol reacts with concentrated HCl to form methyl chloride.
(iv) The reaction of alcohols with PCl5 gives alkyl halides and water.
220. Select the correct option using T (True) or
F (False) symbol for the following statements.
(i) Williamson’s synthesis is used to prepare both symmetrical and unsymmetrical ethers.
(ii) The dehydration of alcohols follows Saytzeff’s rule.
(iii) Primary alcohols dehydrate more readily than tertiary alcohols.
(iv) Phenols form hydrogen bonds with water.
221. Select the correct option using T (True) or F (False) symbol for the following statements.
(i) Ethers have lower boiling points than alcohols of similar molecular mass.
(ii) Ethers can undergo cleavage with concentrated HI.
(iii) Tertiary alcohols form carbocations more readily than primary alcohols.
(iv) Ethers are highly reactive with water.
222. Select the correct option using T (True) or
F (False) symbol for the following statements.
(i) Phenols give violet color with neutral FeCl3.
(ii) Tertiary alcohols give turbidity immediately with Lucas reagent.
(iii) Alcohols react with acids to form esters.
(iv) Ethers react with Grignard reagents to form alkanes.
223. Select the correct option using T (True) or
F (False) symbol for the following statements.
(i) Methanol can be oxidized to formaldehyde.
(ii) Phenol reacts with NaOH to form sodium phenoxide.
(iii) Diethyl ether reacts with excess HI to form ethanol and ethyl iodide.
(iv) Alcohols are weaker acids than water.
224. Select the correct option using T (True) or F (False) symbol for the following statements.
(i) Phenols are less acidic than alcohols.
(ii) Ethers are used as solvents in organic reactions.
(iii) Glycerol undergoes esterification with acetic acid.
(iv) Primary alcohols are oxidized to carboxylic acids in one step using strong oxidizing agents.
225. Select the correct option using T (True) or F (False) symbol for the following statements.
(i) Ethers can form intermolecular hydrogen bonds with water.
(ii) Phenol undergoes bromination with bromine water to form 2,4,6-tribromophenol.
(iii) Secondary alcohols can be oxidized to ketones.
(iv) Tertiary alcohols undergo oxidation to form carboxylic acids.
226. Select the correct option using T (True) or
F (False) symbol for the following statements.
(i) Alcohols and phenols react with carboxylic acids to form esters.
(ii) Dehydration of ethanol gives ethene at 443K.
(iii) Methanol reacts with phenol to form anisole.
(iv) Lucas reagent distinguishes between different types of phenols.
|
Group-1
|
Group-2
|
|
(a)
|
Bromination
of phenol
|
(I)
|
Ortho
hydroxybenzoic acid
|
|
(b)
|
Reimer-
Tiemann reaction
|
(II)
|
Ortho hydroxyphenyl alkyl ketone
|
|
(c)
|
Fries
rearrangement
|
(III)
|
Electrophilic
substitution reaction
|
|
(d)
|
Kolbe-
Schmitt reaction
|
(IV)
|
Ortho hydroxyl benzaldehyde
|
(A) TFFF (B) FTTF (C) TFFT (D) FTFT
//X
(answer not detected)
