CBSE Questions for Class 12 Medical Chemistry Organic Compounds Containing Nitrogen Quiz 4 - MCQExams.com

$$C_6H_5CN + H_2/Ni \rightarrow$$?
  • $$C_6H_5-CH_2-CH_2-NH_2$$
  • $$C_6H_5-CH_2-NH_2$$
  • $$C_6H_6-CH_2-NH_2$$
  • $$C_6H_5-NH_2$$
Identify the highest soluble amine from the following.
  • Primary amine
  • Secondary amine.
  • Tertiary amine
  • None of these
The boiling point of amines are higher than that of hydrocarbon because:
  • they form inter molecular H-bonds
  • they are polar
  • they form ionic bonds
  • both A and B
In the preparation of primary amine by reduction of nitriles sodium amalgam can be used as reducing agent in presence of:
  • ethyl alcohol
  • methyl alcohol
  • both a and b
  • none of these
Which of the following is the correct order of the boiling points?
  • Propane $$<$$ Ethylamine $$<$$ Ethyl alcohol
  • Ethylamine $$<$$ Propane $$<$$ Ethyl alcohol
  • Ethylamine $$<$$ Ethyl alcohol $$<$$ Propane
  • Propane $$<$$ Ethyl alcohol $$<$$ Ethylamine
The most basic compound in aqueous solution is:
  • $${ NH }_{ 3 }$$
  • $${ CH }_{ 3 }{ NH }_{ 2 }$$
  • $$HN{ \left( { CH }_{ 3 } \right) }_{ 2 }$$
  • $$N{ \left( { CH }_{ 3 } \right) }_{ 3 }$$
Based on the concept of the hydration of protonated amines, which of the following represents correct order of decreasing basic strength of amines?
  • primary amine $$>$$ secondary amine $$>$$ tertiary amine
  • tertiary amine $$>$$ primary amine $$>$$ secondary amine
  • tertiary amine $$>$$ secondary amine $$>$$ primary amine
  • primary amine $$>$$ tertiary amine $$>$$ secondary amine
Based on the combined effects of inductive effect and solvation, which of the following represents correct order of decreasing basic strength of amines?
  • Secondary amine $$>$$ Tertiary amine $$>$$ Primary amine
  • Primary amine $$>$$ Secondary amine $$>$$ Tertiary amine
  • Tertiary amine $$>$$ Secondary amine $$>$$ Primary amine
  • Primary amine $$>$$ Tertiary amine $$>$$ Secondary amine
Which of the following represents the correct order of basic strength?.
  • aniline $$>$$ diphenylaniline $$>$$ triphenylaniline
  • triphenylaniline $$>$$ diphenylaniline $$>$$ aniline
  • triphenylaniline $$>$$ aniline $$>$$ diphenylaniline
  • aniline $$>$$ triphenylaniline $$>$$ diphenylaniline
What makes diazonium ion one of the best leaving group of organic chemistry? 
  • Half filled electronic configuration of nitrogen atom
  • High electronegativity of nitrogen atom
  • Very high stability of dinitrogen molecule in the atmosphere
  • Weaker $$C-N$$ bond
Which of the following is a true statement regarding the effect of substituent on the basic character of aromatic amines?
  • Electron donating groups like $$-OCH_3$$, $$-CH_3$$ increases the basic strength, while electron withdrawing groups like $$-NO_2$$, $$-SO_3$$, $$-COOH$$ etc. decrease the basic strength.
  • Electron donating groups like $$-OCH_3$$, $$-CH_3$$ decreases the basic strength, while electron withdrawing groups like $$-NO_2$$, $$-SO_3$$, $$-COOH$$ etc. increase the basic strength.
  • Electron donating groups like $$-OCH_3$$, $$-CN$$ increases the basic strength, while electron withdrawing groups like $$-NO_2$$, $$-SO_3$$, $$-COOH$$ etc. decrease the basic strength.
  • Electron donating groups like $$-OCH_3$$, $$-CH_3$$ increases the basic strength, while electron withdrawing groups like $$-NO_2$$, $$-SO_3$$, $$-COOH$$, $$-NH_2$$ etc. decrease the basic strength.
Which of the following is true statement?
  • Every o-substituted aniline (electron releasing or electron withdrawing) is less basic than aniline.
  • Every o-substituted aniline (electron releasing or electron withdrawing) is more basic than aniline.
  • o-substituted aniline (electron releasing) is less basic than aniline and

    o-substituted aniline (electron withdrawing) is more basic than aniline.
  • o-substituted aniline (electron releasing) is more basic than aniline and

    o-substituted aniline (electron withdrawing) is less basic than aniline.
In aqueous solution ______ amines are unexpectedly less basic than the others.
  • Primary
  • Secondary
  • Primary and Secondary
  • Tertiary
Which of the following represents the decreasing order of basic strength of amines in the gas phase?
  • Tertiary amine $$>$$ Secondary amine $$>$$ Primary amine
  • Tertiary amine $$>$$ Primary amine $$>$$ Secondary amine
  • Primary amine $$>$$ Secondary amine $$>$$ Tertiary amine
  • Secondary amine $$>$$ Tertiary amine $$>$$ Primary amine
The stability of benzene diazonium salts is because of:
  • inductive effect
  • resonance
  • hyperconjugation
  • mesomeric effect
Which of the following amine gives diazonium salt on reaction with $$HNO_2?$$
  • $$(CH_3)_2NH$$
  • $$(CH_3)_3N$$
  • $$C_6H_5NH_2$$
  • $$CH_3NH_2$$
This compound can be classified as:

601741_ea8c82ea2b284af5806e314c13d45df8.png
  • primary amine
  • secondary amine
  • tertiary amine
  • none of these
In coupling reactions, diazonium ion acts as:
  • nucleophile
  • electrophile
  • solvent
  • none of the above
The conversion of primary aromatic amines into diazonium salts is known as:
  • diazotisation
  • displacement
  • acylation
  • alkylation
Diazonium salts are used at a very lower temperature because:
  • they are poisonous at room temperature
  • they are highly unstable at room temperature
  • they are highly volatile at room temperature
  • none of these
The molecule which does not exhibit strong hydrogen bonding is$$:$$
  • Methyl amine
  • Diethyl ether
  • Acetic acid
  • Glucose
Which one of the following is strongly basic?
  • Dimethyl amine
  • Methyl amine
  • Ammonia
  • Aniline
Correct gradation of basic character is:
  • $$NH_3 > CH_3NH_2 > NF_3$$
  • $$CH_3NH_2 > NH_3 > NF_3$$
  • $$NF_3 > CH_3NH_2 > NH_3$$
  • $$CH_3NH_2 > NF_3 > NH_3$$
The product X and Y in the following reaction sequence are:
630790_9b235053bdc043249f26c0f0e93fa152.png
$$C_3H_9N$$ reacts with Hinsberg reagent and the product is insoluble in alkali but soluble in ether. This nitrogen containing compound is:
  • primary amine
  • secondary amine
  • tertiary compound
  • nitrite compound
The source of nitrogen in Gabriel synthesis of amines is:
  • sodium azide $$Na{ N }_{ 3 }$$
  • potassium phthalimide $${ C }_{ 6 }{ H }_{ 4 }{ \left( CO \right) }_{ 2 }{ N }^{ - }{ K }^{ + }$$
  • sodium cyanide
  • potassium nitrate
Select the basic strength order of following molecule.
692237_ac1c69864c6d47cb98a180f18cce8a5e.png
  • $$II > III > IV > I$$
  • $$II > IV > III > I$$
  • $$IV > II > III > I$$
  • $$IV > III > I > II$$
Which one of the following on reduction with lithiium aluminium hydride yield a secondary amine?
  • Nitroethane
  • Methyl isocyanide
  • Acetamide
  • Methyl cyanide
Which of the following compound is amphoteric in nature?
  • $$CH_3COOH$$
  • $$CH_3CONH_2$$
Which of the following is more basic than aniline ?
  • Diphenylamine
  • Triphenylamine
  • p-nitroaniline
  • Benzylamine
The strongest base among the following is :
  • $$ C_6 H_5 NH_2 $$
  • $$ (C_6 H_5 )_2 NH $$
  • $$ NH_3 $$
  • $$ (C_2 H_5)_2 NH $$
What is the name of red azo dye ?
  • $$\beta$$-naphthyl azo benzene
  • p-hydroxy azo benzene
  • p-amino azo benzene
  • p-N, N-dimethyl amino azo benzene
Compare boiling point of isomeric alkyl amines.
  • $${ 1 }^{ o }>{ 2 }^{ o }>{ 3 }^{ o }$$
  • $${ 1 }^{ o }>{ 2 }^{ o }<{ 3 }^{ o }$$
  • $${ 1 }^{ o }<{ 2 }^{ o }<{ 3 }^{ o }$$
  • $${ 1 }^{ o }<{ 2 }^{ o }>{ 3 }^{ o }$$
-
692275_16a26d3af4d641d99b7f7695c9e25011.png
In case of substituted aniline the group which decreases the basic strength is :
  • $$- OCH_3$$
  • $$-CH_3$$
  • $$-NH_2$$
  • $$-C_6H_5$$
$$P$$ is
692350_ba3cd1f635df432289a16b832fbbcb3e.png
  • None of these
Which compound is more basic ?
  • all of them are equally basic
The basic character of amines is due to:
  • tetrahedral structure
  • presence of nitrogen atom
  • lone pair of electrons on nitrogen atom
  • high electronegativity of nitrogen
The final compound is :
699148_611674544c5f4b4abfe0e6aa8e22b6b2.png
When ammonium cyanate is heated for  a long time, the product is:
  • Nitrous oxide
  • Ammonium cyanide
  • Nitrogen and water
  • Biuret
Choose the false statement.
  • $$-NH_2$$ is strongly activating while $$-NHCOCH_3$$ is activating
  • $$-NO_2$$ is strongly deactivating while $$-CHO$$ is deactivating
  • $$-NH\underset{\underset{\displaystyle O}{||}}{C}R$$ and $$-CH=O$$ are m-directing
  • $$-CF_3$$ and $$-\underset{\underset{\displaystyle O}{||}}{C}R$$ are m-directing

Which nitrogen is maximum basic?
711484_a224f648063b491ba58434568568f8a3.png
  • $$1$$
  • $$2$$
  • $$3$$
  • All are equally basic
What is the molarity of 0.2 N Na2 CO3 solution ?
  • 0.1M
  • 0M
  • 0.4M
  • 0.2M
Half-life period of a radioactive element is 100 yr. How long will it take for its 93.75% decay ?
  • 400 yrs
  • 300 yrs
  • 200 yrs
  • 193 yrs
In the above reaction, the product $$B$$ is:
789508_2dcb642d4d8c4bac9dbd93d7a480baad.png
  • none of the above
Which of following statements is/are the not correct?
765638_b0bd7e86a01645c181069ca64cc39de6.png
  • $$II$$ is more soluble than $$I$$ in $${H}_{2}O$$
  • $$II$$ is more soluble than $$III$$ in $${H}_{2}O$$
  • $$II$$ is less soluble than $$III$$ in $${H}_{2}O$$
  • $$III$$ is more soluble than $$I$$ in $${H}_{2}O$$
The correct statement among the following is:
  • boiling point of amine is more than that of alcohol of nearly same molecular mass
  • the solubility of amines in water increases with increase in molecular mass
  • the order of boiling point of isomeric amines is primary > secondary > tertiary
  • none of these
A definite amount of solid $${ NH }_{ 4 }HS$$ is placed in a flask already containing ammonia gas at a certain temperature and $$0.50atm$$ pressure. $${ NH }_{ 4 }HS$$ decomposes to give $${ NH }_{ 4 }HS$$ decomposes to give $${ NH }_{ 3 }$$ and $${ H }_{ 2 }S$$ and at equilibrium total pressure in flask is $$0.84atm$$. The equilibrium constant for the reaction is:
  • $$0.30$$
  • $$0.18$$
  • $$0.17$$
  • $$0.11$$
Compound $$C$$ in the above reaction is:
764266_e7e29a8400d841ac977e891a49e07095.png
The following sequence of reaction on $$"A"$$ gives.
827143_89ecc8f0b9b543edae1ae694f48f346b.jpg
0:0:1


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