CBSE Questions for Class 11 Medical Chemistry Organic Chemistry Some Basic Principles And Techniques Quiz 4 - MCQExams.com

The functional group in methanol and methanal respectively are :
  • -OH, -CHO
  • -CHO, -OH
  • -OH, -COOH
  • -CHO, -COOH

How would you name the following compounds?

(i) $$ { CH }_{ 3 }-{ CH }_{ 2 }-{ Br } $$

(ii) $$ H-CHO$$

 $$(iii)CH_3-(CH_2)_3-CH=CH_2$$
  • (i) Bromomethane (ii) Methanol (iii) Hexene
  • (i) Bromoethane (ii) ethanol (iii) Hexane
  • (i) Bromopropane (ii) Methanol (iii) Hexene
  • (i) Bromoethane (ii) Methanal (iii) Hexene
The name of the compound CH$$_3$$-CH$$_2$$-CHO is :
  • Propanal
  • Propanone
  • Ethanol
  • Ethanal
In Liebig's method for the estimation of C and H, if the compound also contains N, which of the following is kept near the exist of the combustion tube?
  • Silver wire
  • $$PbCr_4$$
  • Both (a) and (b)
  • CuO gauze
The number of carbon atoms in the principal chain of the given compound are :
274578_bdc4a013e57640d9ae045525263f7539.png
  • $$7$$
  • $$5$$
  • $$4$$
  • $$6$$
What is the correct chemical formula for $$1, 2$$-dicholoro tetrafluroethane ?
  • $$Cl-\underset{Cl}{\underset{|} {\overset{F}{\overset {|}C}}}-\underset{Cl}{\underset{|} {\overset{F}{\overset {|}C}}}-H$$
  • $$H-\underset{Cl}{\underset{|} {\overset{F}{\overset {|}C}}}-\underset{Cl}{\underset{|} {\overset{F}{\overset {|}C}}}-F$$
  • $$F-\underset{F}{\underset{|} {\overset{Cl}{\overset {|}C}}}-\underset{F}{\underset{|} {\overset{F}{\overset {|}C}}}-Cl$$
  • $$F-\underset { Cl }{ \underset { | }{ \overset { Cl }{ \overset { | }{ C }  }  }  } -\underset { H }{ \underset { | }{ \overset { Cl }{ \overset { | }{ C }  }  }  } -\underset { F }{ \underset { | }{ \overset { F }{ \overset { | }{ C }  }  }  } -F$$
Name of the compound is :
305085.PNG
  • $$2$$-methyl-$$3$$-ethyl-$$1$$-pentene
  • $$3$$-ethyl-$$4$$-methyl-$$4$$-pentene
  • $$3$$-ethyl-$$2$$-methyl-$$1$$-pentene
  • $$3$$-methyl-$$2$$-ethyl-$$1$$-pentene
The absorption of hydrogen by platinum is known as:
  • Hydrogenation
  • Reduction
  • Dehydrogenation
  • Occlusion
$$CH_3-O-\underset{\displaystyle O}{\underset{\displaystyle ||}{C}}-\underset{\displaystyle OH}{\underset{\displaystyle |}{C}}H-CH=CH-\overset{\displaystyle O}{\overset{\displaystyle ||}{C}}-OH$$

How many functional groups are present in given compound?
  • $$2$$
  • $$3$$
  • $$4$$
  • None of the above
 Column-A Column-B Column-C
(1) Alcohol
(2) Aldehyde
(3) Ketone
(4) Carboxylic acid		(a) $$-CO-$$
(b) $$-COOH$$
(c) $$-CHO$$
(d) $$-OH$$		(i) Propanal
(ii) Propanone
(iii) Propanol
(iv) Propanoic acid

Direction : Match the functional group with their formulae and examples.

Column-A     Column-B     Column-C

    (1)                _______         _______

    (2)               _______         _______

    (3)               _______         _______

    (4)               _______         _______
  • (1) - (d) (iii) ; (2) - (c) (i) ; (3) (b) (ii) ; (4) - (a) (iv)
  • (1) - (d) (iii) ; (2) - (c) (i) ; (3) (a) (ii) ; (4) - (b) (iv)
  • (1) - (d) (iii) ; (2) - (b) (ii) ; (3) (c) (i) ; (4) - (a) (iv)
  • (1) - (d) (iii) ; (2) - (a) (i) ; (3) (a) (iv) ; (4) - (c) (ii)
In which of the following compounds, nitrogen cannotbe tested by Lassaigne's test?
  • $$CH_3CONH_2$$
  • $$NH_2.NH_2.H_2O$$
  • $$C_6H_5NH_2$$
  • $$C_6H_5NO_2$$
The number of $$\pi $$ and $$\sigma $$ bond in the following structure respectively are:
274341.png
  • $$8, 5$$
  • $$8, 6$$
  • $$3, 8$$
  • $$5, 13$$
The catalyst used in Kjeldahl's method for the estimationof nitrogen is : 
  • Copper
  • Magnesium
  • Mercury
  • Sodium
A compound which does not give a positive test inLassaigne's testfor nitrogen is :
  • Glycine
  • Hydrazine
  • Urea
  • Phenyl hydrazine
State True or False.
$$\pi$$ bond is formed by the colateral overlapping of atomic orbitals.
  • True
  • False
In Dumas method for the estimation of nitrogen in anorganic compound, nitrogen is determined in the form of :
  • Gaseous nitrogen
  • Sodium cyanide
  • Ammonium sulphate
  • Gaseous ammonia
lUPAC name of $$(CH_3)_2CHCH(CH_3)_2$$ is:
  • $$2.2$$-dimethylbutane
  • $$2.3$$-dimethylbutane
  • $$2.4$$-dimethylbutane
  • $$1$$-methylpentime
Purity of organic liquid can be checked by its characteristic :
  • boiling point
  • volume
  • solubility in water
  • solubility in alcohol
Westrosol is also known as :
  • ethylene dichloride
  • acetylene tetrachloride
  • acetylene tricholoride
  • none of the above
The common and IUPAC names of the group of  $$(CH_3)_2CHCH_2-$$ respectively are :
  • Isobutyl, 2 - Methylpropyl
  • Isobutyl, 1 - Methylpropyl
  • Tert-butyl, 1, 1 - Dimethylethyl
  • Sec-butyl, 2 - Methylpropyl
The IUPAC name of: 
$$HC \equiv C - CH_2 - \overset{\quad \,\,\,\,CH_2=CH}{CH_2 - \overset{|}{C}} = CH - \overset{H}{\overset{|}{C}} = O$$
  • 3-(1-butynyl)-2,4-pentadienal
  • 5-Ethynyl-3-vinyl-2-pentenal
  • 3-ethenyl-2-hepten-6-ynal
  • 5-Acetyl-3-ethenyl-2-pentenal
The IUPAC name of the compound is:
305108_65cbdfa9645b4e21b38e00b618922e68.png
  • $$1.1$$-dimethylbutane-$$1,3$$-diol
  • $$1.3.3$$-trimethylpropane-$$1.3$$-diol
  • $$2$$-methylpentane-$$2.4$$-diol
  • $$1.3,3$$-trimethyl-$$1,3$$-propanediol
IUPAC name of the following compound is:
305140_6ae783bdf1b14c35bbefc04372106533.png
  • N, N-dimethyl cyclopropane carboxamide
  • N-methyl cyclopropanamide
  • cyclopropionamide
  • none of the above
The IUPAC name is:
305092_d8ce5a5fec77473e80a5466b8591e5c0.png
  • $$1$$-phenyl-$$1$$-acetyloxyethane
  • $$1$$-acetoxyeihylbenzene
  • $$1$$-phenylethyl ethanoate
  • $$1$$-methylbenzyl acetate
The IUPAC name of (image) :
305125.jpg
  • N- Cyclohexylbenzamide.
  • N-Phenyl-N-cyclohexylmethanamide
  • N-Phenylcyclohexanecarboxamide
  • N-Cyclohexenyl-N-phenylmethanamid
IUPAC name of the compound is:  $$CH_3-\underset{Cl}{\underset{|}{C}}=\underset{CH_3}{\underset{|}{C}}-\underset{C_2H_5}{\underset{|}{C}H}-CH_2-C\equiv CH$$
  • $$6$$-Chloro-$$4$$-ethyl-$$5$$-methyl hept-$$5$$-en-$$1$$-yne
  • $$6$$-Chloro-$$4$$-ethyl-$$5$$-methyl hept-$$1$$-yn-Hne
  • $$2$$-Chloro-$$4$$-ethyl-$$3$$-methyl hept-$$2$$-en-$$6$$-yne
  • $$2$$-Chloro-$$4$$-ethyl-$$3$$-methyl hept-$$4,3$$-yn-$$2$$-ene
Amongest the following, the acceptable name as per IUPAC nomenclature is :
  • pent-4-en-1-yne
  • pent-1-en-4-yne
  • 2, 2-dimethyl-4-ethylpentane
  • 3-hydroxybutan-1-ol
$$CH_3\,-\,CH\,=\,CH\, -\,C\, \equiv \,CH$$ has lUPAC name :
  • pent - 2 - en- 4 - yne
  • pent - 4 - yn - 2 - ene
  • pent - 1 - yn - 3 - ene
  • pent - 3 - en - 1 - yne
What is IUPAC name of $$CH_3-C(CH_3)(OH)-C(O)-CH_3$$?
  • Heptane-1,3,5-tricarboxylic acid
  • Pentane-1,3,5-tricarboxylic acid
  • 3-Hydroxy-3-methylbutane-2-one
  • 3-butyl-1 ,4-hexadien-6-al
The IUPAC name of the compound $$\begin{matrix} CH_ 2&-&CH&-&CH_2\\|& &|&&| \\CN& &CN& &CN \end{matrix}$$ is:
  • $$1,2,3$$-Tricyanopropane
  • $$3$$-Cyanopentane-$$1 ,5$$-dinitrile
  • propane-$$1,2,3$$-tricarbonitrile
  • propan-$$1,2,3$$-tricarbylamine.
The functional group, present in $$CH_3COOC_2H_5$$ is :
  • ketonic
  • aldehydic
  • ester
  • carboxylic
The IUPAC name of the compound (Refer diagram) is :
305198_bb1f54c06c634b71929a19ce654e0af6.png
  • $$3, 3$$ - dimethyl - $$1 $$- hydroxy cyclohexane
  • $$1, 1$$ - dimethyl - $$3$$ - hydroxy cyclohexane
  • $$3, 3$$- dimethyl - $$1$$ - cyclohexanol
  • $$1, 1$$- dimethyl - $$3$$ - cyclohexanol
IUPAC name of the structure is :
305185_718575ba9fac4e6ab01a57d85b1397a0.png
  • $$3,3$$-di methyl pentane dioic acid
  • $$1$$-carboxy-$$2,2$$-di methyl butanoic acid
  • $$1,3$$-di carbo-$$2,2$$-di methyl propane
  • $$4$$-carboxy-$$3,3$$-di methyl butanoic acid
Structural formula of 3-methyl-1,4-pentanediol is :
  • None of the above
The general formula of an ester (where R represents an alkyl group) is :
  • R-OH
  • R-COOH
  • R-COOR
  • R-H
The IUPAC name of the compound shown below is (refer image) :
305204.jpg
  • 2 - Bromo - 6 - chlorocyclohex - 1 -ene
  • 6 - Bromo - 2 - chlorocyclohexene
  • 3 - Bromo - 1 - chlorocyclohex - 1 - ene
  • 1 - Bromo - 3 - chlorocyclohexene
Which of the following compounds has wrong IUPAC name?
  • $$CH_3\,-\, CH_2\,-\, CH_2\,-\, COO\,-\, CH_2CH_3\, \quad\, \rightarrow\, Ethyl butanoate$$
  • $$CH_3-\underset{CH_3}{\underset{|}{C}H}-CH_2-CHO$$       $$\rightarrow$$ 3-Methylbutanal
  • $$CH_3-\underset{OH}{\underset{|}{C}H}-\underset{CH_3}{\underset{|}{C}H}-CH_3$$           $$\rightarrow$$ -Methyl-3-butanol
  • $$CH_3-\underset{CH_3}{\underset{|}{C}H}-\overset{O}{\overset{||}{C}}-CH_2-CH_3$$     $$\rightarrow$$ 2-Methyl-3-pentanone
The IUPAC name of $$(CH_3)_2CHCH_3$$ is:
  • $$2$$-methylpropane
  • $$2,2$$-dimethylethane
  • trimethylmethane
  • none of these
Name of some compounds are given. Which one is not in IUPAC system?
The IUPAC name of the compound having the formula $$(CH_3)_3CCH=CH_2$$ is :
  • $$3,3,3$$-Trimethyl$$-1-$$propene
  • $$1,1,1$$-Trimethyl-$$1$$-propene
  • $$3,3$$-Dimethyl-$$1$$-butene
  • $$1,1$$-Dimethyl$$-2$$-butene
The IUPAC name of $$CH_3-C(CH_3)(OH)CH_2-CH(CH_3)CH_3$$ is :
  • $$2,4$$-Dimethylpentan$$-2-$$ol
  • $$2,4$$-Dimethylpentan$$-4-$$ol
  • $$2,2$$-Dimethylbutane
  • Butanol$$-2-$$one
The IUPAC name of the following compound is $$CH_2\, =\, CH\, -\, CH(CH_3)_2$$ :
  • 1, 1 - Dimethyl - 2 - propene
  • 3 - Methyl - 1 - butene
  • 2 - Vinylpropane
  • 1 - lsopropylethylene
Which of the following is correct about the number of bonds formed by atoms of different elements in acetaldehyde?
(Report your answer in the ratio of $$H:O:C$$)
  • 4:2:2
  • 4:1:2
  • 4:1:3
  • 3:3:3
The IUPAC name of $$(CH_3)_2\, CHCH_2CH_2Br$$ is :
  • 1 - Bromopentane
  • 2 - Methyl - 4 - bromopentane
  • 1 - Bromo - 3 - methylbutane
  • 2 - Methyl - 3 - bromopentane
The IUPAC name of the following compound is :
$$CH_2=CH-CH(CH_3)_2$$
  • $$1,1$$-Dimethyl $$-2-$$ propene
  • $$3$$-Methyl$$-1-$$ butene
  • $$2$$-Vinyl propane
  • $$1$$-Isopropyl ethylene
The IUPAC name of $$(CH_3)_2CHCH_2CH_2Br$$ is :
  • $$1$$-Bromopentane
  • $$2-$$Methyl$$-4-$$bromo pentane
  • $$1$$-Bromo$$-3-$$ methyl butane
  • $$2$$-Methyl$$-3-$$ bromo pentane
The IUPAC name of the following compound is :
326417.png
  • 3 - Ethyl - 2 - methylbut - 3 - ene
  • 2 - Ethyl - 3 - methyl but - 1 - ene
  • 2 - Methyl - 3 - ethylbut - 3 - ene
  • 3 - Methyl - 2 - ethylbut - 1 - ene
The functional group in an alcohol is :
  • $$-\overset{\overset{\displaystyle O}{||}}{C}-O-$$
  • $$-\overset{\overset{\displaystyle O}{||}}{C}-OH$$
  • $$-OH$$
  • $$-\overset{\overset{\displaystyle O}{||}}{C}-H$$
The IUPAC name of the compound having the formula $$(CH_3)_3CCH\, =\, CH_2$$ is :
  • 3,3,3-Trimethyl-1-propane
  • 1, 1, 1-Trimethyl-1-butene
  • 3, 3-Dimethyl-1-butene
  • 1,1- Dimethyl-3-butene
$$CH_3-\underset{COOH\!\!\!\!\!}{\underset{|}{\overset{H}{\overset{|}{C}}}-}CH_2-CH_3$$

The IUPAC name of compound is :
  • Butan-3-oic acid
  • Butan -2-oic acid
  • 3 - Methylbutanoic acid
  • 2 - Methylbutanoic acid
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