CBSE Questions for Class 11 Medical Chemistry Organic Chemistry Some Basic Principles And Techniques Quiz 3 - MCQExams.com

Which of the following is/ are incorrect IUPAC name?
IUPAC name of the compound 

$$CH_2=CH - \underset{CH_2CH_3}{\underset{|}{C}H \,\,-}\,  \underset{Cl}{\underset{|}{C}} =CH_2$$
  • 3-Ethyl-4-chloropenta-1, 4-diene
  • 2-Chloro-3-ethylpenta-1, 4-diene
  • 4-Chloroethenylpent-1-ene
  • 3-Ethenyl-4-chloropent-4-ene
Which of the following is gem-dihalide :
The first system developed for naming of organic compounds was called Geneva system.
  • True
  • False
Which of the following compounds has $$-OH$$ as a functional group?
  • Butanone
  • Butanol
  • Butanoic acid
  • Butanal
The functional groups present in the following compound is:
$$CH_{3}   CH_{2}   CH_{2}   CH_{2}   CHO$$
  • alcohol
  • ketone
  • carboxylate
  • aldehyde
The functional groups present in the following compound is:
$$CH_{3}   CH_{2}   CH_{2}   COOH$$
  • carboxylic acid
  • carbonate
  • alcohol
  • carboxylate
Which one is not a source of carbohydrate?
  • Rice
  • Millets
  • Sorghum
  • Gram
The functional group present in $$CH_{3}COOC_{2}H_{5}$$ is :
  • ketonic
  • aldehydic
  • ester
  • carboxylic
Which of the following is incorrectly matched?
  • Vinegar $$\rightarrow $$ Carboxylic Acid
  • $$C_{2}H_{6} \rightarrow $$ Alkane
  • Ethanol $$\rightarrow$$ Alcohol
  • Methanol $$\rightarrow$$ Ketone
The functional groups present in the following compound is:
$$CH_{3}   CH_{2}   OH$$
  • ketone
  • alcohol
  • aldehyde
  • carboxylate
Which of the following is/are functional groups?
  • Hydroxyl group
  • Aldehyde group
  • Carboxylic group
  • All of the above
Which of the following are trivial name of organic compounds?
  • vinegar
  • furyl aldehyde
  • acetic acid
  • acrolein
Identify divalent functional group:
  • esters
  • ketones
  • aldehydes
  • alcohol
Methyl group is:
  • $$- CH_{2}$$
  • $$- CH_{2}OH$$
  • $$- CH_{2}Cl$$
  • $$- CH_{3}$$
Which of these contains the carbonyl group?
  • ketones
  • aldehydes
  • carboxylic Acids
  • all of these
Compound $$CH_3CH_2CH(CH_3)CH_2COCl$$ has the IUPAC name_______.
  • 3-methylpentanoyl chloride
  • 1-chloroformyl-2-methylbutane
  • 1 -cloroformyl-1-secbutylmethane
  • none of the above
The correct IUPAC name of $$CH_{3} C H_{2} CH_{2} CH_{3}$$ is n-butane not butane.
  • True
  • False
IUPAC name of compound $$C_{4}H_{9}SH$$ is______.
  • butanol
  • butanethiol
  • butanesol
  • butanol sulphur
Which of the following statements about IUPAC system of nomenclature is /are correct?
  • This system of nomenclature was introduced in 1947.
  • On the basis of this system, the name of an organic compound consists of word root, suffix, and prefix.
  • This system was first introduced in 1892.
  • The latest IUPAC system is based on recommendation made in 1993.
The general formula $$C_{n}H_{2n}O_{2}$$ could be for open chain:
  • diketones
  • carboxylic acids
  • diols
  • dialdehydes
$$CCl_3 - CHO$$ in IUPAC system is called:
  • chloral
  • 1, 1, 1-trichloroethanal
  • 2, 2, 2-trichloroethanal
  • Trichloroacetaldehyde
Among the following compounds, the most acidic is:
  • p-nitrophenol
  • p-hydroxybenzoic acid
  • o-hydroxybenzoic acid
  • none
The IUPAC name is :
305087.png
  • 1-Hydroxy-4-methylpentanoic acid
  • 1-Methyl-3-hydroxypentanoic acid
  • 4-Hydroxy-2-methylpentanoic acid
  • 4-Carboxypentanol-2
Which of the following compound is wrongly named ?
  • $$CH_3CH_2CH_2-CH(CH_3)(CH_3)$$             2-Methylpentane
  • $$CH_3-CH(CH_3)-CH_2-CH_2-CHO$$           2-Methyl, 1-pentanal
The IUPAC name of the compound is:

128581_0e4559fba8b543f6bd49c56e2e590088.png
  • 3,3-dimethyl-1-hydroxy cyclohexane
  • 1,1-dimethyl-3-hydroxy cyclohexane
  • 3,3-dimethyl-1-cyclohexanol
  • none of the above
IUPAC name of the compound ?

95702.jpg
  • hexanoic acid 5 - al - 1
  • 6-oxohexanoic acid
  • hexanal-1-carboxylic acid
  • none of these
The number of sigma and pi bonds in benzene are:
  • $$6\sigma$$ and $$3\pi$$
  • $$12\sigma$$ and $$3\pi $$
  • $$9\sigma$$ and $$3\pi$$ 
  • $$6\sigma$$ and $$6\pi $$
The IUPAC name of the compound shown above is:

128587_4d6ca593878d4999b23ec0f736e335d2.png
  • 1,1-diethyl-2-dimethylpentane
  • 4,4-dimethyl-5,5-diethylpentane
  • 5,5-diethyl-4,4-dimethylpentane
  • 3-ethyl-4,4 dimethylheptane
Which of the following is crotonic acid?
  • $$\displaystyle CH_{2}=CH-COOH$$
  • $$\displaystyle C_{6}H_{5}-CH=CH-COOH$$
  • $$\displaystyle CH_{3}-CH=CH-COOH$$
  • $$\displaystyle C_{6}H_{5}-COOH$$

The IUPAC name of the above compound is:

193512.png
  • 3-pentanol
  • 3-pentanal
  • 3-pentanoic acid
  • 3-pentane
The correct IUPAC name of is:
128569_da01c93bbc5c41ebb4ac2f7486be9c06.png
  • 2-methylenebutanoic acid
  • 2-ethylprop-2-enoic acid
  • 2-carboxybutene
  • None of the above
IUPAC name of this compound is:
128712_114562c902734af49f9810d4500e114a.png
  • ethyl-4-methyl-3-oxopentanoate
  • 2-ethoxycarbonylpentan-3-one
  • 4-ethoxycarbonylpentan-3-one
  • ethyl-2-methyl-3-oxopentanoate
Which among the following is/are natural source(s) of organic compounds ?
  • coal
  • natural gas
  • petroleum
  • all of the above
Formula of acetic acid is :
  • $$HCOOH$$
  • $$CH_3CH_2COOH$$
  • $$CH_3COOH$$
  • $$C_3H_7COOH$$
The functional group present in acetic acid is:
  • $$-C = O$$
  • $$- OH$$
  • $$- CHO$$
  • $$-COOH$$
An organic compound whose functional group is carboxyl is :
  • ethyne
  • ethanol
  • acetic acid
  • ethanone
The nodal plane in the $$\pi$$-bond of ethene is located in:
  • the molecular plane
  • a plane parallel to the molecular plane
  • a plane perpendicular to the molecular plane which bisects the carbon-carbon $$\sigma$$-bond at right angle
  • a plane perpendicular to the molecular plane which contains the carbon-carbon $$\sigma$$-bond


State whether the given statement is true or false.

Statement: The IUPAC name of the compound is ethanol.


193607_0effd6389e9b4e3aac79aca86eef2e74.JPG
  • True
  • False
$${  CH_3}  -{ \underset {  | }  CH}  -{  CH_3}  $$
             $$CH_3$$ 
The IUPAC name of the compound is:               
  • 1-methyl propane
  • 2-methyl propane
  • butane
  • 2-methyl butane
Which of the following statements is/are correct?
  • The trivial names of organic compounds are called common names.
  • The systematic names of organic compounds are obtained from the IUPAC system.
  • The systematic names of alkanes are based on the number of C atoms in the longest continuous chain of C atoms.
  • The maximum number of functional groups must be included in the C atom chain selected even if it does not satisfy the longest chain rule.
Which of the following statements is/are not correct?
  • $$\pi$$ - bond always exists with sigma -bond according to Valence Bond Theory
  • $$\pi$$ - bond can exist independently according to Valence Bond Theory
  • $$\sigma$$ - bond is weaker than pi-bond
  • $$\pi$$ - bond is less reactive than sigma-bond
$$\pi$$-Bonding occurs in each of the following except :
  • $$CO_{2}$$
  • $$C_{2}H_{4}$$
  • $$CN^{-}$$
  • $$CH_{4}$$
  • Both Assertion and Reason are correct and Reason is the correct explanation for Assertion.
  • Both Assertion and Reason are correct but Reason is not the correct explanation for Assertion.
  • Assertion is correct but Reason is incorrect.
  • Both Assertion and Reason are incorrect.
How would you name the following compound?
CH$$_3$$-CH$$_2$$-Br
  • Bromo ethane
  • Bromo pentane
  • Bromo hexane
  • None of these
Which of the following is zerone?
  • $$CH_3CHO$$
  • $$CH_3OH$$
  • $$CH_4$$
  • $$C_2H_5OH$$
In $$2-chloro-3-methyl\ hexanoic acid$$, the primary suffix is:
  • $$2-chloro-$$
  • $$-3-methyl$$
  • $$an(e)$$
  • $$oic\ acid$$
Butanone is a four-carbon compound. The functional group present is:
  • carboxylic acid
  • aldehyde
  • ketone
  • alcohol
Butanone is a four-carbon compound with the functional group :
  • carboxylic acid
  • aldehyde
  • ketone
  • alcohol
The fusion of an organic compound with solid sodium hydroxide is undertaken for testing nitrogen, sulphur and halogens. This test is called:
  • Dumas method
  • Carius method
  • Kjeldahl's method
  • Lassaigne's test
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