InterviewSolution
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InterviewSolution
This section includes InterviewSolutions, each offering curated multiple-choice questions to sharpen your knowledge and support exam preparation. Choose a topic below to get started.
| 151. |
Which of the following reactions will give ether as main product?A. B. `Me_(3)C-OH underset(C_(6)H_(5)Br)overset(Na)to`C. `Me_(3)C-OH underset(CH_(3)CH_(2)CH_(2)Br)overset(Na)to`D. ` CH_(3)CH_(2)CH_(2)OH underset(Me_(3)C-Br)overset(Na)to` |
| Answer» Correct Answer - A::D | |
| 152. |
Reduction of `R-CH_(2)OH-RCH_(3)` can be carried out by:A. `LiAlH_(4)`B. `H_(2)-Ni`C. `RedP+HI`D. `NaBH_(4)//AlCl_(3)` |
| Answer» Correct Answer - C | |
| 153. |
Chosse the correct statements regarding the following reaction: A. Syn addition of -H (from `BH_(3)`) and -OH (from solution) occur.B. Syn addition of -H (from `BH_(3)`) and -OH (from `H_(2)O_(2)`) occur.C. The product is optically active.D. Addition follows anti Markownikoff orientation |
| Answer» Correct Answer - A::C | |
| 154. |
The ether when treated with HI produces:A. B. C. D. |
| Answer» Correct Answer - B::D | |
| 155. |
, Products of the reaction is:A. racemicB. diastereomersC. mesoD. optically pure |
| Answer» Correct Answer - B | |
| 156. |
Chosse the correct statements regarding the following reaction: A. Syn addition of -H (from `BH_(3)`) and -OH (from solution) occur.B. Syn addition of -H (from `BH_(3)`) and -OH (from `H_(2)O_(2)`) occur.C. The product is optically active.D. Addition follows anti Markownikoff orientation |
| Answer» Correct Answer - A::C | |
| 157. |
Which of the following are possible are possible products in significant amounts?A. B. C. D. |
| Answer» Correct Answer - B::C::D | |
| 158. |
Which of the following compounds will give positive Victor Meyer test?A. `CH_(3)CH_(2)OH`B. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-OH`C. `CH_(3)CH_(2)-I`D. `CH_(3)-overset(CH_(3))overset(|)(C)-NO_(2)` |
| Answer» Correct Answer - A::C::D | |
| 159. |
Which of the following alcohols will not react with `Cu//Delta`A. `CH_(3)-CH_(2)-OH`B. `Ph-underset(Ph)underset(|)overset(Ph)overset(|)(C)-OH`C. `H_(3)C-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(C)-OH`D. |
| Answer» Correct Answer - B | |
| 160. |
Which of the following represent conditions to perfoem given conversation?A. `POCl_(3),"pyridine"`B. `Na-"metal",CS_(2)heat`C. D. `CF_(3)SO_(2)Cl, "pryidine",Me_(3)CO^(Ө)K^(oplus)` |
| Answer» Correct Answer - B::C::D | |
| 161. |
Which of the following reactions are correctly matched?A. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(CH)-O-CH_(3)overset(HI)to S_(N)1`B. `CH_(3)-underset(CH_(3))underset(|)(CH)-O-CH_(3)overset(H^(oplus)//H_(2)O)to S_(N)1`C. `CH_(3)-underset(CH_(3))underset(|)(CH)-O-CH_(3)overset(HI)to S_(N)2`D. `CH_(3)-O-CH_(2)overset(HI)to S_(N)1` |
| Answer» Correct Answer - A::B::C | |
| 162. |
Lucas test is used for distinguishing primary, secondary and tertiary alchols as: `ROH+"Conc."HCloverset(ZnCl_(2))rarrRCl`(white turbidity)`+H_(2)O` The correct statement regarding the above test is/areA. ROH behaves as a baseB. Greater the value of `pK_(a)` of alcohol, greater the reactivity with HCl and thus, sooner the formation of white turbidity.C. Alcohols that reacts faster with Na metal, will give turbidity at fastest rate.D. Alcohols that do not change the orange colour of acidic dichromate solution produces immediate turbidity in this test. |
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Answer» Correct Answer - a,b,d |
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| 163. |
Which of the following ethers will get hydrolysed by `H^(oplus)//H_(2)O?`A. B. C. D. |
| Answer» Correct Answer - D | |
| 164. |
Which of the following ethers will get hydrolysed by `H^(oplus)//H_(2)O?`A. B. C. D. |
| Answer» Correct Answer - D | |
| 165. |
Which of the following ethers ethers is the most unreactive to cleavage with conc. HBr?A. `Ph-CH_(2)-O-CH_(3)`B. `Ph-O-Ph`C. D. |
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Answer» Correct Answer - B |
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| 166. |
Which of the following ethers ethers is the most unreactive to cleavage with conc. HBr?A. `Ph-CH_(2)-O-CH_(3)`B. `Ph-O-Ph`C. D. |
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Answer» Correct Answer - B |
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| 167. |
Which of the following alcohols do not give white turbidity on treatment `HCl//ZnCl_(2)`?A. `CH_(3)CH_(2)OH`B. C. `N=C-underset(CH_(3))underset(|)(CH)-OH`D. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(CH)-OH` |
| Answer» Correct Answer - A::C | |
| 168. |
which of the following ethers will get hydrolysed by HI?A. B. C. D. |
| Answer» Correct Answer - C::D | |
| 169. |
Which of the following alcohols do not give white turbidity on treatment `HCl//ZnCl_(2)`?A. `CH_(3)CH_(2)OH`B. C. `N=C-underset(CH_(3))underset(|)(CH)-OH`D. `CH_(3)-underset(CH_(3))underset(|)overset(CH_(3))overset(|)(CH)-OH` |
| Answer» Correct Answer - A::C | |
| 170. |
which of the following ethers will get hydrolysed by HI?A. B. C. D. |
| Answer» Correct Answer - C::D | |
| 171. |
Which of the followin wil give iodoform?A. `CH_(3)CH_(2)OH`B. `CH_(3)-overset(OH)overset(|)(CH)-Ph`C. D. |
| Answer» Correct Answer - A::B::D | |
| 172. |
Which of the followin wil give iodoform?A. `CH_(3)CH_(2)OH`B. `CH_(3)-overset(OH)overset(|)(CH)-Ph`C. D. |
| Answer» Correct Answer - A::B::D | |
| 173. |
1,2-diols are oxidised to ketones or aldehydes by periodic acid `HIO_(4)`. Periodic acid reacts with dipol to form a cyclic intermeditate. The reaction takes places because iodine is in a highly positive oxidation state, so it readily accepts electrons. When the intermeidate breaks down, the bond between the two carbon bonded to the OH group break. Which of the following will not form by above reaction?A. `H-overset(O)overset(||)(C)-H`B. `CH_(3)OH`C. `CO_(2)`D. `H-overset(O)overset(||)(C)-OH` |
| Answer» Correct Answer - B | |
| 174. |
Alcohols can be replaced by-Cl group by the followin reagents:A. `Cl_(2)`B. `SOCl_(2)`C. `PCl_(5)`D. `HCl+ZnCl_(2)` |
| Answer» Correct Answer - B::C::D | |
| 175. |
1,2-diols are oxidised to ketones or aldehydes by periodic acid `HIO_(4)`. Periodic acid reacts with dipol to form a cyclic intermeditate. The reaction takes places because iodine is in a highly positive oxidation state, so it readily accepts electrons. When the intermeidate breaks down, the bond between the two carbon bonded to the OH group break. Identify D.A. B. C. D. |
| Answer» Correct Answer - D | |
| 176. |
Which of the following reagents can be used for identification of phenol?A. `"Neutral"FeCl_(3)`B. `NaNO_(2)+HCl`C. `(NH_(4))_(2)"["Ce(NO_(3))_(6)"]"`D. `ZnCl_(2)//HCl` |
| Answer» Correct Answer - A::B::C | |
| 177. |
Althought epoxides do not contain a good leaving group, they contains a strained three membered ring with polar bonds. Nucleophilic attack opens the strained three membered ring making it favorable process even with the poor leaving group. This reaction occurs readily with strong nucleophilic , and with acids like HZ, where Z is nucleophilic atom. Find out major product of reaction:A. B. C. D. None of these |
| Answer» Correct Answer - A | |
| 178. |
Althought epoxides do not contain a good leaving group, they contains a strained three membered ring with polar bonds. Nucleophilic attack opens the strained three membered ring making it favorable process even with the poor leaving group. This reaction occurs readily with strong nucleophilic , and with acids like HZ, where Z is nucleophilic atom. Find out the correct product of the reaction A. B. C. D. |
| Answer» Correct Answer - B | |
| 179. |
Althought epoxides do not contain a good leaving group, they contains a strained three membered ring with polar bonds. Nucleophilic attack opens the strained three membered ring making it favorable process even with the poor leaving group. This reaction occurs readily with strong nucleophilic , and with acids like HZ, where Z is nucleophilic atom. What would be the major product of reaction?A. B. C. D. |
| Answer» Correct Answer - C | |
| 180. |
The best method to prepare cyclohexene from cyclohexanol is by usingA. conc. `HCl+ZnCl_(2)`B. conc. `H_(3)PO_(4)`C. HBrD. conc. HCl |
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Answer» Correct Answer - B |
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| 181. |
The acidic hydrolysis of ether (X) shown below is fastest when A. one phenyl group is replaced by a methyl groupB. one phenyl group is replaced by a para-methoxyphenyl groupC. two phenyl groups are replaced by two para-methoxyphenyl groupsD. non structural change is made to X |
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Answer» Correct Answer - C |
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| 182. |
Carbon oxygen double bond are easily reduced by `NaBH_(4) or LiAlH_(4)`. The actual reducing agent in these reduction is hrdride ion `(H^(-))` The metal hydrogen bond in `LiAlH_(4)` is more than polar than metal hydrogen bond in `NaBH_(4)`. As a result `LiAlH_(4)` is strong reducing agent than `NaBH_(4)`. Esters, carboxylic acids, amides cannot be reduced by `NaBH_(4)` The carbonyl group of amide of reduced to methylene group by `LiAlH_(4)` Find the correct product of the following reaction: A. B. C. D. No reaction |
| Answer» Correct Answer - C | |
| 183. |
Carbon oxygen double bond are easily reduced by `NaBH_(4) or LiAlH_(4)`. The actual reducing agent in these reduction is hrdride ion `(H^(-))` The metal hydrogen bond in `LiAlH_(4)` is more than polar than metal hydrogen bond in `NaBH_(4)`. As a result `LiAlH_(4)` is strong reducing agent than `NaBH_(4)`. Esters, carboxylic acids, amides cannot be reduced by `NaBH_(4)` The carbonyl group of amide of reduced to methylene group by `LiAlH_(4)` , Identify X:A. B. C. D. |
| Answer» Correct Answer - B | |
| 184. |
Carbon oxygen double bond are easily reduced by `NaBH_(4) or LiAlH_(4)`. The actual reducing agent in these reduction is hrdride ion `(H^(-))` The metal hydrogen bond in `LiAlH_(4)` is more than polar than metal hydrogen bond in `NaBH_(4)`. As a result `LiAlH_(4)` is strong reducing agent than `NaBH_(4)`. Esters, carboxylic acids, amides cannot be reduced by `NaBH_(4)` The carbonyl group of amide of reduced to methylene group by `LiAlH_(4)` A. `CH_(3)-overset(OH)overset(|)(CH)-CH_(2)-overset(OD)overset(|)(CH)-CH_(3)`B. `CH_(3)-underset(D)underset(|)overset(OH)overset(|)(C)-CH_(2)-CH_(3)-OD`C. `CH_(3)-overset(OD)overset(|)(CH)-CH_(2)-overset(OD)overset(|)(OH)-CH_(3)`D. `CH_(3)-overset(OD)overset(|)(CH)-CH_(2)-overset(OD)overset(|)(CH)-CH_(3)` |
| Answer» Correct Answer - D | |