Amines PYQs Set 7 (PDF)

Set 7 of 10 · Questions 181-210 of 273

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Mere Teacher · Previous Year Questions NEET Chemistry · Amines · Set 7 (Q181-210)
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181. $Consider the above reaction, the product A and product B respectively are$ (1) (2) (3) (4) 182. $Which of the following reactions the used to prepare aryl fluorides from diaronium ats and fleoroboric acid?$ (1) $Sandmeyer reaction$ (2) $Baly Schemann reaction$ (3) $Gattermann reaction$ (4) $Swarts reaction$ 183. $In the following sequence of reaction identify the major product B$ (1) (2) (3) (4) 184. $The reaction of benzenediazonium chloride with aniline yields yellow dye. The name of the yellow dye is$ (1) $p-hydroxyazobenzene$ (2) $p -aminoazobenzene$ (3) $p-nitroazobenzenc$ (4) $o-nitroazobenzene.$ 185. $Compound A is converted to B on reaction with C H C l_{3} and K O H . The compound B is toxic and can be decomposed by C. A, B and C respectively are :$ (1) $primary amine, nitrile compound, conc. HCl$ (2) $secondary amine, isonitrile compound, conc. NaOH$ (3) $primary amine, isonitrile compound, conc. HCl$ (4) $secondary amine, nitrile compound, conc. NaOH$ 186. $Consider the above reaction, compound B is :$ (1) (2) (3) (4) 187. $C_{2} H_{5} Cl KCN X H_{2} / Catalyst Y CHCl_{3} alc.KOH Z What is ' Z' in the above sequence of reactions?$ (1) (2) (3) (4) 188. $Which of the following is NOT a correct method of the preparation of benzylamine from cyanobenzene ?$ (1) $H_{2} / Ni$ (2) $(i) LiAl H_{4} (ii) H_{3} O^{+}$ (3) $(i) SnC l_{2} + HCl (gas) (ii) NaB H_{4}$ (4) $(i) \frac{HCl}{H _{2} O} (ii) NaB H_{4}$ 189. $Consider the above reaction, the Product "P" is :$ (1) (2) (3) (4) 190. $Acetic acid on heating with NH_{3} forms A . When A reacts with LiAlH_{4} followed by hydrolysis gives B . When B is heated with chloroform in KOH medium gives C . What are B and C respectively?$ (1) $CH_{3} CONH_{2}, CH_{3} CH_{2} NC$ (2) $CH_{3} CH_{2} NH 2, CH_{3} CH_{2} NC$ (3) $CH_{3} CH_{2} NH_{2}, CH_{3} COOH$ (4) $CH_{3} CH_{2} CH_{2} NH_{2}, CH_{3} CH_{2} NC$ 191. $The final product 'C' is the following series series of reactions is$ (1) (2) (3) (4) 192. $Identify the reagents (X, Y, Z) used in the conversion of 3-methylaniline to 3-nitrotoluene. X Y Z$ (1) $NaNO_{2}, HCl 273 K HBF_{4} NaNO_{2}, Cu, Δ$ (2) $NaNO_{3}, HCl 273 K HF NaNO_{3}, Cu, Δ$ (3) $NaNO_{2}, HCl C_{2} H_{5} OH NaNO_{3}, Δ$ (4) $NaNO_{3}, HCl NaOH C_{6} H_{5} NO_{2}$ 193. $Identify the product (A) in the following reaction.$ (1) (2) (3) (4) 194. $Consider following reaction, where(A) The change in the functional group and(B) The corresponding change in the hybridization from starting to the final product A and B are A B$ (1) $-CN to -CH2-OH sp2 to sp^{3}$ (2) $-CN to - CONH_{2} sp to sp^{2}$ (3) $-CN to - CH_{2} NH_{2} sp to sp^{3}$ (4) $-CN to - CH_{3} sp to sp^{3}$ 195. $The major products A and B for the following reactions are, respectively: KCN DMSO (A) H_{2} / Pd (B)$ (1) (2) (3) (4) 196. $The sequence of reagents which convert p-methyl aniline to p-methyl benzoic acid are$ (1) $KMnO_{4} / H^{+}; NaNO_{2} + HCl; Cu / HCl$ (2) $NaNO_{2} + HCl /273 K; Cu / HCl; KMnO_{4} / H^{+}$ (3) $NaNO_{2} + HCl /273 K; CuCN / KCN; H_{3} O^{+}$ (4) $NaNO_{2} + HCl /285 K; KCN; H_{3} O^{+}$ 197. $The major product formed in the reaction given below will be : NaN O_{2} Aq . HCl, 0 - 5° C$ (1) (2) (3) (4) 198. $Identify the amine formed when ethyltrimethyl ammonium iodide is treated with silver hydroxide and further heated strongly.$ (1) $C_{2} H_{5} N (CH_{3})_{2}$ (2) $C_{2} H_{5} NH_{2}$ (3) $(CH_{3})_{3} N$ (4) $CH_{3} NH_{2}$ 199. $Which one of the following gives the most stable Diazoniumsalt ?$ (1) $C H_{3} - C H_{2} - C H_{2} - N H_{2}$ (2) (3) $C H_{3} - C H (C H_{3}) - N H_{2}$ (4) 200. $In the reaction : P, Q and R respectively are$ (1) $NaNO_{2} + dil. HCl, HBF_{4}, Cu + NaNO_{2}$ (2) $NaNO_{2} + conc. HCl, F_{2}, Cu + NaNO_{3}$ (3) $NaNO_{2} + dil. HCl, BF_{3}, Cu + NaNO_{2}$ (4) $NaNO_{3} + dil. HCl, F_{2}, Cu + NaNO_{3}$ 201. $Identify the correct statement for the below given transformation.$ (1) $A - C H_{3} C H_{2} CH = CH- C H_{3}, B - C H_{3} C H_{2} C H_{2} CH = C H_{2}, Saytzeff products$ (2) $A - C H_{3} C H_{2} CH = CH- C H_{3}, B - C H_{3} C H_{2} C H_{2} CH = C H_{2}, Hafmann products$ (3) $A - C H_{3} C H_{2} C H_{2} CH = C H_{2}, B - C H_{3} C H_{2} CH = C H C H_{3}, Hofmann products$ (4) $A - C H_{3} C H_{2} C H_{2} CH = C H_{2}, B- C H_{3} C H_{2} CH = C H C H_{3}, Saytzeff products$ 202. $The compound ' A' decolourises Br_{2} / CCl_{4} and releases N_{2} gas with HNO_{2} . The compound ' A' is$ (1) (2) (3) (4) 203. $In the given reactions, ' X' and ' Y' respectively are C_{6} H_{5} CH_{2} NH_{2} X C_{6} H_{5} CONH_{2} Y C_{6} H_{5} NH_{2}$ (1) $LiAlH_{4}, H_{2} O; Br_{2} / OH^{-}$ (2) $Br_{2} / OH^{-}; LiAlH_{4}, H_{2} O$ (3) $Br_{2} / H^{+}; NaBH_{4}$ (4) $NaBH_{4}; Br_{2} / H^{+}$ 204. $The correct structures of A and B formed in the following reactions are :$ (1) (2) (3) (4) 205. $a-Chlorosodium acetate on bolling with aqueous sodium nitrite gives$ (1) $nitromethane$ (2) $α chloronitromethane$ (3) $nitroethane$ (4) $acctyl chloride.$ 206. $Predict respectively ' X' and ' Y' in the following reactions Ar - NH_{2} \to X Ar - N + \equiv NCl^{-} \to Y Ar - C l$ (1) $NaNO_{3} and Cl_{2}$ (2) $NaNO_{3} - HCl and HCl$ (3) $NaNO_{2} - HCl and Cu / HCl$ (4) $NaNO_{2} - HCl and NaNH_{2}$ 207. $Consider the above chemical reaction andidentify product " A ”$ (1) (2) (3) (4) 208. $The products A and B formed in the following reaction scheme are respectively$ (1) (2) (3) (4) 209. $Considering the above reaction, X and Y respectively are$ (1) (2) (3) (4) 210. $In the below given synthetic sequence, the product " C " is$ (1) (2) (3) (4)