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

Which is most volatile?
  • $${ CH }_{ 3 }{ CH }_{ 2 }{ CH }_{ 2 }{ NH }_{ 2 }$$
  • $${ \left( { CH }_{ 3 } \right) }_{ 3 }N$$
  • $${ CH }_{ 3 }OH$$
The correct order of the $$pKa$$ values for the conjugate acids of the heterocyclic compound is:

1076452_38f9f45c138e472fade16ff238d1ae6a.png
  • $$II > III > I > IV$$
  • $$IV > II > III > I$$
  • $$III > II > IV > I$$
  • $$III > IV > II > I$$
Arrange the compounds in decreasing order of basicity

 Ammonia, Triethylamine, Aniline, Ethylamine, Diethylamine
  •  Diethylamine > Triethylamine > Ethylamine > Ammonia > Aniline
  • Diethylamine > Ethylamine >Triethylamine> Ammonia > Aniline
  • Triethylamine > Diethylamine > Ethylamine> Ammonia > Aniline
  • Aniline > Ethylamine> Diethylamine >Triethylamine> Ammonia 
Which of the following aryl amine undergoes diazotization most readily?
Which of the following amines cannot be prepared by path-1?
The correct order of basicites of the following compounds is:-
1120616_abfd2430f2e3455f9c1e84d74212f7b7.png
  • $$II > I > III > IV$$
  • $$I > III > II > IV$$
  • $$III > I > II > IV$$
  • $$I > II > III > IV$$
$$CH_3NH_2     \quad \underrightarrow{{(CH_3COOCH_3)}, { \Delta}} \quad X$$ 
  • X is more basic than $$CH_3NH_2$$
  • X is less basic than $$CH_3NH_2$$
  • X is a tertiary amine
  • None

The correct decreasing order of $$p{ K }_{ b }$$:
1100454_2c0bc11f831545d48aa9d2367a97691d.png
  • $$I>II>III>IV$$
  • $$III>IV>II>I$$
  • $$II>III>IV>I$$
  • $$IV>II>I>III$$
Which of the following compound(s) will not dissolve in an alkali solution after it has undergone reaction with Hinsberg's reagent?
  • Diethyl amine
  • Isopropyl amine
  • N-methyl ehtanamine
  • N,N-dimethyl aniline
Given compound is a:
1152829_9dd2651181644a98bbcc5cce1b7c7ed6.png
  • Primary amine
  • Secondary amine
  • Tertiary amine
  • Ammonium salt
Which of the following cannot exist in room temperature?
Diazomethane was photolysed to generate singlet carbine which was treated with cis-2-butene. The main product(s) of the reaction is/are:
  • cis-1, 2-dimethylcyclopropane
  • trans-1, 2-dimethylcyclopropane
  • mixture of $$(A)$$ and $$(B)$$
  • Ethylcyclopropane
A 55- kDa protien was acid hydrolysed to obtain a misture of amino acids. How many amino acids could be present in the solution?
  • 550
  • 500
  • 1000
  • 1100
Which of the following arylamine is most reactive towards diazotisation? 
The most basic compound among the following is 
  • Benzylamine
  • Aniline
  • Acetanilide
  • p-nitroaniline
Number of isomeric primary amines obtained from $$C_4H_{11}N$$ are :
  • 3
  • 4
  • 5
  • 6
Strongest base is 
  • $$CH_2$$ = $$CH -CH_2-NH_2$$
  • $$CH_2$$ = $$CH- CH_2 - NH_2$$
  • $$CH_3CH_2CH_2NH_2$$
Amongest the following the most basic compound is:
  • p-nitro aniline
  • Acetanilide
  • Aniline
  • Benzylamine
Which of the following order is correct ?
  • All of the above
Phenyl acetonitrile reacts with sodium and alcohol to give
  • $$Ph-CH_2\ CH_2NH_2$$
  • $$Ph\ CH_2-NH_2$$
  • $$CH_3-CH_2-NH-Ph$$
  • $$Ph-NH_2$$
$$-NH_2$$ group in aniline is:
  • m- directing and activating
  • m- directing and deactivating
  • o,p- directing and deactivating
  • o,p- directing and activating
Find the B in the following reaction
1178693_9a96653724544289bae51a42390a8100.jpg
Which of the following amines cannot be prepared by Gabriel Phthalimide reaction?  
  • $$CH_3-\underset{NH_2}{\underset{|\,\,\,\,\,\,\,}{NH_2}}-CH_3$$
Which of the following will be most stable diazonium salt $$RN_2^{+}X^{-}$$ ?
  • $$CH_3N_2^{+}X^{-}$$
  • $$C_6H_5N_2^{+}X^{-}$$
  • $$CH_3 CH_2 N_2^{+}X^{-}$$
  • $$C_6H_5 CH_2 N_2^{+}X^{-}$$
Which of the following is correct about Guanidine base?
  • Resonance possible
  • Odd number of p- electrons
  • Localized lone pair of $$e^{-}$$
  • Delocalized lone pair of $$e^{-}$$
The order of basicity of amines in gaseous state is :-
  • $$3^{o} > 2^{o} > NH_{3} > 1^{o}$$
  • $$1^{o} > 2^{o} > 3^{o} > NH_{3}$$
  • $$NH_{3} > 1^{o} > 2^{o} > 3^{o}$$
  • $$3^{o} > 2^{o} > 1^{o} > NH_{3}$$
Which of the following order regarding basicity of amines is correct?
Factors responsible for base strength comparison of amines in aqueous solution ? 
  • Availability of lone pair on nitrogen
  • Lone pair donating power of nitrogen
  • Stability of conjugate acid formed by solvation through H-bonding.
  • All of the above
Minimum C-atom required for $$2^\circ$$ amine to show chain isomerism are:
  • $$4$$
  • $$6$$
  • $$3$$
  • $$5$$
The correct order of increasing basic nature for the bases $$NH_{3},CH_{3}NH_{2}$$ and $$(CH_{3})_{2}NH$$ is :
  • $$NH_{3}<CH_{3}NH_{2}$$ < $$(CH_{3})_{2}NH$$
  • $$(CH_3)_2NH<CH_3NH_2<NH_3$$
  • $$CH_3NH_2<NH_3<(CH_3)_2NH$$
  • $$NH_3 < (CH_3)_2NH<CH_3NH_2$$
$$CH_3NH_2+CHCl_3+KOH \rightarrow$$ Nitrogen containing compound +$$KCl +H_2O$$. Nitrogen containing compound is:
  • $$CH_3CN$$
  • $$CH_3NHCH_3$$
  • $$CH_3-\bar{N}\equiv\overset{+}{C}$$
  • $$CH_3-\overset{+}{{N}}\equiv {C}:^-$$
What is the decreasing order of basicity of pri-, sec-, and tert-, ethyl amines and $$NH_3$$ ?
  • $$NH_3$$ > $$C_2H_5NH_2$$ > $$(C_2H_5)_2NH$$ > $$(C_2H_5)_3N$$
  • $$(C_2H_5)_3N$$ > $$(C_2H_5)_2NH$$ > $$C_2H_5NH_2$$ > $$NH_3$$
  • $$(C_2H_5)_2NH$$ > $$C_2H_5NH_2$$ > $$(C_2H_5)_3N$$ > $$NH_3$$
  • $$(C_2H_5)_2NH$$ > $$C_2H_5NH_2$$ > $$NH_3$$ > $$(C_2H_5)_3N$$
A $$[Cr(H_2O)_6]^{3+}$$ typically absorbs at around 574 nm. It is allowed to react with ammonia to form a new complex $$[Cr(NH_3)_6]^{3+}$$ that should have absorption at
  • 800 nm
  • 462 nm
  • 620 nm
  • 574 nm
Which of the following compound has highest boiling point ?
Which of the following are soluble in aq. $$NaOH$$ solution ?
Which nitrogen atom is most basic in the above given compound?

1195407_0939b9053cd8499986731bccb8befa3a.JPG
  • $$3$$
  • $$4$$
  • $$5$$
  • $$2$$
What will be the final product in the following reaction sequence?
$$CH_3CH_2CN\xrightarrow {H^{+}/H_2O } A \xrightarrow [ \Delta  ]{ { NH }_{ 3 } } B \xrightarrow { NaOBr } $$
  • $$CH_3CH_2CONH_2$$
  • $$CH_3CH_2COBr$$
  • $$CH_3CH_2NH_2$$
  • $$CH_3CH_2CH_2NH_2$$
2) $$H_3C-CH_2-NH_2$$
3) $$(CH_3)_2NH$$
Write basicity order of the above 

1189556_307c70667d0548cda3171b91599ebc50.jpg
  • 1>2>3
  • 3>2>1
  • 1>3>2
  • 2>3>1
2) $$H_3C-CH_2-NH_2$$
3) $$(CH_3)_2NH$$
Write basicity order of the above 


1189536_e6f4a60237104778a0a494e36bb5edb5.jpg
  • 1>2>3
  • 3>2>1
  • 1>3>2
  • 2>3>1
Among the following which amine can be prepared by Gabriel phthalimide method?
  • $$C_6H_5NH_2$$
  • $$CH_3 - NH - CH_2CH_3$$
Which of the following is an Incorrect statement about benzenediazonium chloride?
  • It is prepared by the reaction of aniline with nitrous acid at 273-278 K
  • It is a colourless crystalline solid
  • Alkyl diazonium salts are more stable than arenediazonium salts
  • Benzene diazonium fluoroborate is water insoluble & stable at room temperature
$$1^0, 2^0$$ and $$3^0$$ amine can be distinguished by?
  • Hinsberg reaction
  • Hoffmann reaction
  • Reaction with Nitrous acid
  • All of these
Which of the following is most basic:
  • $$CH_{3}CH_{2}NH_{2}$$
  • $$CH_{3}CH_{2}NHCH_{3}$$
  • $$CH_{3}CONH_{2}$$
Which of the following compounds has the most basic nitrogen?
1210957_cf0441ef46dd46a78a00dd69feb0e967.png
  • $$a$$
  • $$b$$
  • $$c$$
  • $$d$$
Which of the following is most basic in nature?

Compare basic strength:
1212465_fe1f5f8279de42fbb6e27661e4d801db.png
  • $$a > b > c$$
  • $$b > a > c$$
  • $$c > a > b$$
  • $$c > b > a$$
Arrange basicity of given compounds in decreasing order :
(1) $$ CH_3-CH_2-NH_2 $$
(2) $$ CH_2= CH-NH_2 $$
(3) $$ CH\equiv C-NH_2 $$
(4) $$ C_6H_5-NH_2 $$ 
  • $$1 > 2 > 3 > 4$$
  • $$4 > 3 > 2 > 1$$
  • $$3 > 2 > 1 > 4$$
  • $$1 > 3 > 2 > 4$$
Arrange the following in the decreasing order of their $$pK_{a}$$ value: 
I . $$CH_{2} = CHCH_{2}NH_{2}$$
II .$$ CH_{3}CH_{2}CH_{2}NH_{2}$$
III . $$CH \equiv CCH_{2}NH_{2}$$
  • $$III<II<I$$
  • $$II>I>III$$
  • $$III>II>I$$
  • $$II>III>I$$
Which of the  following will not react with sodiumnitrite and $$HCl$$?

Arrange the following compounds in decreasing order of basicity:
1251414_fe8a6e8c663d453eae21ded397a4c5f3.JPG
  • P > Q > R > S
  • Q > P > R > S
  • R > S > Q > P
  • Q > P > S > R
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