CBSE Questions for Class 11 Medical Chemistry Organic Chemistry Some Basic Principles And Techniques Quiz 2 - MCQExams.com

 Organic compounds are non-conductors of electricity .
State True or false. 
  • True
  • False
$${ C }_{ 6 }{ H }_{ 5 }-O-{ C }_{ 2 }{ H }_{ 5 }$$ IUPAC name of the compound is:
  • ethoxybenzene
  • phenoxyethane
  • benzoxyehane
  • none of these
The correct IUPAC name of:
1067219_7261de8e000e423c839daa95e8eefd02.PNG
  • 3-Cyclohexanol Propyne
  • 3-[3-Hydroxy Cyclohexyl] Propyne
  • 3-Propynyl Cyclohexanol
  • 3-(2-propynyl)Cyclohexanol
Which of the following is correct IUPAC name of compound?
$$CH_{3}-CH_{2}-CH=CH_{}-CH_{3}$$
  • Pent-2-ene
  • Prop-1-en-2-yne
  • 1-Methylpropane
  • Pen-4-ene
The correct IUPAC name of $$H-\overset{\overset{O}{||}}C-CHO$$ is:
  • Formyl methanal
  • 1,2-Ethanedione
  • 2-Oxoethanal
  • Ethanedial
Which of the following statements is incorrect regarding the naming of complex compounds?
  • $$ NH^{2-}
    $$, will be named as 'amido'
  • 'en' will be named as 'ethylenediamine'
  • $$ C_{2}O_{2}S^{2-}_{2} $$ will be named as 'dithio oxalato'
  • $$ {CH_{3}}^- $$ will be named as 'methyl'
IUPAC name of $$CH_3-O- \underset { CH_ 3 }{ \underset{| }{CH}}-CH_3$$ is _____.
  • 3-Methoxy propane
  • 2-Methyl methoxy ethane
  • 1-Methoxy-1-methyl ethane
  • Methoxy isopropane
IUPAC name of $$CH_{3}-O-C_{2}H_{5}$$ is-
  • Ethoxymethane
  • 1-methoxyethane
  • Methylethyl ether
  • Ethylmethyl ether
Write the IUPAC name of 
1158605_260fce3e8fd148e98c8b147bc6478db5.PNG
  • $$5,5-dimethyl-5,5-diethylpentane$$
  • $$4,4-dimethyl-4,4-diethylpentane$$
  • $$3-ethyl-4,4-diethylpentane$$
  • $$1,1-dimethyl-2,2-diethylpentane$$
The name of the following compound is :
$${ CH }_{ 3 }{ CH }_{ 2 }({ CH }_{ 3 }){ CHNH }_{ 2 }$$
  • 1-methyl-1-aminopropane
  • 2-aminobutane
  • 1-aminobutane
  • 1-amino-1-methylpropane
The IUPAC name of $${\text{C}}{{\text{H}}_{\text{3}}} - {\text{CH}}\,{\text{ = }}\,{\text{CH}}\, - {\text{C}} \equiv \,{\text{CH}}$$ is :
  • 2-Penten-4-yne
  • 1-Penten-3-ene
  • Pent-3-en-1-yne
  • None of these
IUPAC name of $$ CH_3-C \equiv C-HC-(CH_3)_2 $$
  • 4-methyl pent-2-yne
  • 1,1- dimethyl-2-butyne
  • 2-methyl-4-pentyne
  • 4, 4-dimethyl-2-butyne.
What is the IUPAC name of the given compound
$$ { CH }_{ 3 }-\underset { \underset { OH }{ | }  }{ CH } -{ CH }_{ 2 }-{ CH }_{ 2 }-{ CH }_{ 2 }-\overset { \underset { | }{ Br }  }{ \underset { \overset { | }{ Br }  }{ C }  } -{ CH }_{ 3 } $$
  • 6, 6-Dibromoheptan-2-ol
  • 2, 2-dibromoheptan-6-ol
  • 6, 6-Dibromoheptan-2-al
  • None of these
The IUPAc name of 
1338395_d47b38f5dcc04dfe82e6edf92e393b09.JPG
  • 4,5-Diethylocta-1,4,7-triene
  • 4,5-Diethylocta-1,4,6-triene
  • 4,5-Dimethylocta-1,4,6-triene
  • 4,5-Diethylocta-1,4,6-triyne
The correct name of $$H_3C-CH_2-C\equiv C-CH=CH_2$$ is 
  • hex-3-yn-5-ene
  • hex-5-en-3-yne
  • hex-3-yn-1-ene
  • hex-1-en-3-yne
IUPAC nomenclature of 
$$H_3C-\overset{\,\,CH_3}{\overset{|}{\underset{CH_3}{\underset{|}{C}}}}-CH=\overset{\,\,\,\,CH_3}{\overset{|}{C}}-CH_3$$
  • 2,4,4 - trimethylpent -2-ene
  • 2,4,4 - trimethylpent -3-ene
  • 2,2,4 - trimethylpent -3-ene
  • 2,2,4 - trimethylpent -2-ene
The IUPAC name of following compound is 
$$H_3C-\overset{\overset{\,\,\,\,\,\,\,C_2H_5}{|}}CH-\underset{\underset{\,\,\,\,\,CHO}{|}}CH-CH_3$$
  • 3-ethyl-2-methylbutanal
  • 2,3 dimethylpentanal
  • 2-ethyl 3-methylbutanal
  • 2-ethyl-3-methylbutan-3-al
The IUPAC name of the compound is 
1357584_64acea3a6b814f7c8c381e68a8c359b9.PNG
  • 2-Ethyl-ethyl acetate
  • Ethyl-3-methyl butanoate
  • Ethyl-2-methyl butanoate
  • 2-methyl butanoic acid
The name of the given according to IUPAC nomenclature system is:
1387086_79fa857fdf20402784bf663f7153fd76.PNG
  • 2,3-dibromo-1,4-dichlorobut-2-ene
  • 1,4-dibromo-2,3-dichlorobut-2-ene
  • Dichlorobromobutene
  • Dichlorobromobutane
Which of the functional group from following contains the compound of minimum 3 carbon atoms? 
  • -COOH
  • -CHO
  • > C=O
  • -C -O
The IUPAC name of the given is:
1387037_0dd6e95c678b40feb2bde853be04a5ea.png
  • 2-bromo-3-methylbut-1-ene
  • 4-bromo-3-methylpent-2-ene
  • 2-bromo-3-methylpent-3-ene
  • 4-bromo-3-methylpent-1-ene
In which of the following, carbon principal group can not be taken in parent chain ?
Which group is always taken as a substituent in the IUPAC system of nomenclature?
  • $$-NO_{2}$$
  • $$-C\equiv N$$
  • $$-NH_{2}$$
Which is not the characteristic of $$\pi-$$bond?
  • $$\pi$$ bond is formed when a sigma bond already exists
  • $$\pi$$ bonds are formed from hybrid orbitals
  • $$\pi$$ bond may be formed by the overlapping of p orbitals
  • $$\pi$$ bond results from lateral overlap of atomic orbitals
The number of sigma and pi bonds in a molecule of cyanogen are:
  • $$4,3$$
  • $$3,4$$
  • $$5,2$$
  • $$3,5$$
Pi bond is formed:
  • by the overlapping of atomic orbitals on the axis of nuclei
  • by mutual sharing of p - electrons
  • by sideways overlapping of half filled p -orbitals
  • by overlapping of s-orbitals with p-orbital
Main source of most of the organic compounds is :
  • coal tar
  • petroleum
  • both A & B
  • ammonia
Which of the following has $$p \pi - d \pi$$ bonding ?
  • $$NO^{-}_{3}$$
  • $$SO^{2-}_{3}$$
  • $$BO^{3-}_{3}$$
  • $$CO^{2-}_{3}$$
Which one of the following is an incorrect statement?
  • A pi bond is formed when a sigma bond already exists.
  • A pi bond may be formed by the overlapping of p or d orbitals.
  • A pi bond is formed by the overlapping of hybrid orbitals.
  • A pi bond is formed by the lateral overlapping of atomic orbitals.
Which of the following is gemdihalide?
  • $$CH_{3} - CH(Br) - CH_{2}Br$$
  • $$CH_{3} -CHBr_{2}$$
  • $$CH_{3}- CH(Br) -CH_{2} -CH_{2}Br$$
  • $$BrCH_{2} CH_{2}Br$$
Generally pi bond is formed from the lateral overlap of:
  • $$s-s$$ orbitals
  • $$p-p$$ orbitals
  • $$d-d$$ orbitals
  • both $$B$$ and $$ C$$
IUPAC name of the above compound is :
15336.png
  • Bromo methyl benzene
  • Phenyl methyl bromide
  • Benzyl bromide
  • Benzal bromide
The first organic compound was synthesized in laboratory by:
  • Wohler
  • Kolbe
  • Berzelius
  • Neil Barthlot
The best solvent for the crystallization of organic solid is in which:
  • organic compound is highly soluble
  • compound is soluble on warming
  • compound is soluble at $$90^{0}$$
  • compound is insoluble
$$CH_3\! -\! C\equiv CH$$

The IUPAC name of the compound is:
  • propane
  • propene
  • propyne
  • 1-methyl-propane
In the detection of hydrogen from organic
the compound, the compound is heated with CuO
and water produced is tested with__________.
  • lime water
  • anhydrous $$CuSO_{4}$$
  • potash solution
  • calcium chloride solution
In sodium extract nitrogen is present as:
  • sodamide
  • sodium cyanide
  • sodium nitrite
  • sodium nitrate
In the detection of carbon, lime water turns
milky due to the formation of:
  • $$CaO$$
  • $$Ca(OH)_{2}$$
  • $$CaCO_{3}$$
  • $$Ca(HCO_{3})_{2}$$
Sodium extract gives blood red colour when treated with $$FeCl_{3}$$. Formation of blood red colour confirms the presence of:
  • only nitrogen
  • only sulphur
  • only halogens
  • both nitrogen and sulphur
Which of the following elements in an organic
compound cannot be detected by Lassaigne's
test?
  • N
  • S
  • Cl
  • H
Which of the following statements is not applicable to Lassaigne's test?
  • The extra elements (N, S and halogens) are tested as their inorganic salts.
  • During fusion of the organic compound with sodium, $$ Na_{2} S$$ , NaCN and NaX are formed.
  • It can even be used for the detection of hydrogen in the organic compound.
  • It is possible to differentiate between the different halogens.
Neo-heptyl alcohol is correctly represented as :
Which of the following is called ethanoic acid :
  • $$HCOOH$$
  • $$CH_{3}COOH$$
  • $$CH_{3}CH_{2}COOH$$
  • $$CH_{3}CH_{2}CH_{2}COOH$$
The IUPAC name of the above shown compound is :

25227_89eeed1fc5e04ef7ab7cc5558b99a99a.png
  • But-2-ene-2,3-diol
  • Pent-2-ene-2,3-diol
  • 2-methylbut-2-ene-2,3-diol
  • Hex-2-ene-2,3-diol
Which of the following is branched chain alkane?
  • n-pentane
  • pyridine
  • iso-butane
  • n-hexane
The incorrect IUPAC name is:
  • $$CH_3CCCH(CH_3)_2$$ 4-methyl-2-pentyne
Correct IUPAC Name of given compound :
74117.JPG
  • 3-Ethenyl-2-methylhexa-2,5-dienoicacid
  • 2-Methyl-3-ethenylhexa-2,5-dien-1-oic acid
  • 3-Ethenyl-2-methyhexa-2,5-dien-1-carboxylicacid
  • 2-Methyl-3-eth(-2-enyl)hexa-2,5-dienoicacid
Common name of $$CH_{3}CH_{2}COOH$$ :
  • Propionic acid
  • Butyric acid
  • Vinegar
  • Methanoic acid
The IUPAC name of the compound $$CH_3CH=CHC\equiv CH$$ is:
  • pent - 3 - en - 1 - yne
  • pent - 2 - en - 4 - yne
  • pent - 1 - yn - 3 - ene
  • pent - 4 - yn - 2 ene
$$CH_{2}OHCHOHCH_{2}OH$$ is glycerol.
It doesn't contain ___________ alcoholic group.
  • $$1^{0}$$
  • $$2^{0}$$
  • $$3^{0}$$
  • both $$1^{0}$$ & $$2^{0}$$
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