MCQOPTIONS
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MCQOPTIONS
This section includes 7 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
| 1. |
The correct order of basicity?s of the following compounds is \[\underset{4}{\mathop{C{{H}_{3}}-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-N{{H}_{2}}}}\,\] [IIT-JEE (Screening) 2001] |
| A. | \[2>1>3>4\] |
| B. | \[1>3>2>4\] |
| C. | \[3>1>2>4\] |
| D. | \[1>2>3>4\] |
| Answer» C. \[3>1>2>4\] | |
| 2. |
Indicate which nitrogen compound amongst the following would undergo Hofmann's reaction (i.e. reaction with \[B{{r}_{2}}\] and strong KOH) to furnish the primary amine (\[R-N{{H}_{2}}\]) [CBSE PMT 1989] |
| A. | \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-NH.C{{H}_{3}}\] |
| B. | \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-O.N{{H}_{4}}\] |
| C. | \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-N{{H}_{2}}\] |
| D. | \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-NHOH\] |
| Answer» D. \[R-\overset{O}{\mathop{\overset{||}{\mathop{C}}\,}}\,-NHOH\] | |
| 3. |
The order of basic strength among the following amines in benzene solution is[AIIMS 1991; RPMT 2002] |
| A. | \[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}N>{{(C{{H}_{3}})}_{2}}NH\] |
| B. | \[{{(C{{H}_{3}})}_{2}}NH>C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{3}}N\] |
| C. | \[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N\] |
| D. | \[{{(C{{H}_{3}})}_{3}}N>C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}NH\] |
| Answer» C. \[C{{H}_{3}}N{{H}_{2}}>{{(C{{H}_{3}})}_{2}}NH>{{(C{{H}_{3}})}_{3}}N\] | |
| 4. |
\[+\,CHC{{l}_{3}}+KOH\to ?\] [BHU 2000; Pb. PMT 2000; Kerala 2003] |
| A. | Phenyl isocyanide |
| B. | Benzyl amine |
| C. | Benzyl chloride |
| D. | None of these |
| Answer» B. Benzyl amine | |
| 5. |
In the above reaction 'X' stands for [CPMT 1986, 2001; MP PET 1992; KCET (Engg./Med.) 2000] |
| A. | \[N{{H}_{2}}\] |
| B. | \[SnC{{l}_{2}}\] |
| C. | Cl |
| D. | \[NH_{4}^{+}C{{l}^{-}}\] |
| Answer» B. \[SnC{{l}_{2}}\] | |
| 6. |
The action of nitrous acid on ethyl amine gives [DPMT 1982; CPMT 1971, 89, 94; MP PET 1993, 2001; RPMT 1997; Pb. PMT 1999] |
| A. | Ethane |
| B. | Ammonia |
| C. | Ethyl acohol |
| D. | Nitroethane |
| Answer» D. Nitroethane | |
| 7. |
The compound Forms nitro so amines when the substituents are [Roorkee 1999] |
| A. | \[{{R}_{1}}=C{{H}_{3}},\,{{R}_{2}}={{R}_{3}}=H\] |
| B. | \[{{R}_{1}}={{R}_{2}}=H,\,\,{{R}_{3}}={{C}_{2}}{{H}_{5}}\] |
| C. | \[{{R}_{1}}=H,\,\,{{R}_{2}}={{R}_{3}}=C{{H}_{3}}\] |
| D. | \[{{R}_{1}}=C{{H}_{3}},\,\,{{R}_{2}}={{C}_{2}}{{H}_{5}},\,\,{{R}_{3}}=H\] |
| Answer» D. \[{{R}_{1}}=C{{H}_{3}},\,\,{{R}_{2}}={{C}_{2}}{{H}_{5}},\,\,{{R}_{3}}=H\] | |