CBSE Questions for Class 11 Medical Chemistry Organic Chemistry Some Basic Principles And Techniques Quiz 5 - MCQExams.com

Ammonium nitrate on heating gives ___________.
  • nitric oxide
  • nitrogen
  • nitrogen peroxide
  • nitrous oxide
The indicator which is used to find the strength of caustic soda solution with the help of oxalic acid is:
  • Methyl orange
  • Phenolphthalein
  • Potassium permanganate
  • None of the above
Calcium formate on distillation gives:
  • $$HCOOH$$
  • $$CH_3COOH$$
  • $$CH_3CHO$$
  • $$HCHO$$
The functional group in aldehdye is :
  • $$\overset{CH_3}{\overset{|}{O}-}H$$
Yellow ammonium sulphide can separate :
  • $$CdS$$ and $${As}_{2}S_{3}$$
  • $${Bi}_{2}{S}_{3}$$ and $$CuS$$
  • $$PbS$$ and $${Bi}_{2}{S}_{3}$$
  • $$HgS$$ and $$PbS$$
The chief source of aromatic compounds is :
  • Fruits
  • Oil of winter green
  • Petroleum
  • Ants
Which one of the following is not an alcohol?
  • $$(CH_3)_2CHCH_2CH_2OH$$
  • $$(CH_3)_3C-CH_2OH$$
  • $$(CH_3)_2-CH-OH$$
  • $$CH_3CH_2CH_2CH_2COOH$$
Which one of the following methods is not used to purify liquid organic compound?
  • Fraction distillation
  • Simple distillation
  • Steam distillation
  • Fractional cyrstallisation
Which of the statements below best describes a functional group?
  • It is the non-polar section of an organic molecule
  • It is a highly reactive group of elements with similar outer shell electron configurations
  • It is an atom or a group of atoms which determines the chemical properties of a compound
  • It is the part of a chelate ligand attracted to the central ion
The part of IUPAC name which indicates saturation or unsaturation is:
  • root word
  • primary suffix
  • secondary suffix
  • prefix
Which of the following contains alcoholic functional group?
  • $$\displaystyle H-O-H\overset { \overset { H }{ | } }{ \underset { \underset { H }{ | } }{ C } } -H$$
  • $$\displaystyle { CH }_{ 2 }=CH-{ CH }_{ 2 }OH$$
  • $$\displaystyle { CH }_{ 3 }-\overset { \overset { H }{ | } }{ \underset { \underset { { CH }_{ 3 } }{ | } }{ C } } -O-H$$
  • All of the above
In each of the following, the carbonyl group is present except in :
  • $$\displaystyle HCHO$$
  • $$\displaystyle { CH }_{ 3 }{ COCH }_{ 3 }$$
  • $$\displaystyle { HCH }_{ 2 }OH$$
  • $$\displaystyle { CH }_{ 3 }-\overset { \overset { O }{ \parallel } }{ C } -H$$
Which of the following represents the correct IUPAC name of the compound ?
$$\displaystyle { CH }_{ 2 }=CH-{ CH }_{ 2 }Cl$$
  • Allyl chloride
  • 1-chloro-3-propene
  • 3-chloro-1-propene
  • Vinyl chloride


IUPAC name of the given compound is:

369280_e8a3387ed68d472cb61053000a096996.gif
  • Hexanedione -$$2, 4$$-ic-$$1$$-oic acid
  • $$2, 4$$-dioxohexanoic acid
  • Propionyl-dioxo-oic acid
  • None of these
$$\displaystyle { CCl }_{ 3 }-CHO$$ in IUPAC system is called :
  • Chloral
  • 1, 1, 1-trichloroethanal
  • 2, 2, 2-trichloroethanal
  • Trichloroacetaldehyde
IUPAC name of   $$CH_3-CH=CH-CH_3$$ is :
  • Unsymmetrical dimethyl ethylene
  • Symmetrical dimethyl ethylene
  • 1,2-dimethylethene
  • 2-butene
What is the proportion of sigma $$(\sigma )$$ and $$pi(\pi )$$ bond 1,4- Benzoquinone ?
  • 1 : 3
  • 3 : 2
  • 3 : 1
  • 2 : 3
IUPAC name of the compound is :
$$\displaystyle { CH }_{ 3 }-CO-\underset { \overset { | }{ Cl }  }{ CH } -\underset { \overset { | }{ Br }  }{ CH } -COOH$$
  • 2-bromo-3-chloro-4-oxopentanoic acid
  • 4-oxo-3-chloro-2-bromopentanoic acid
  • 4-carboxybromo-3-chlorobutanone
  • None of these
IUPAC name of the compound is:
369271.PNG
  • Propanetrinitrile - $$1,2,3$$
  • $$1,2,3$$-cyanopropane
  • Propane -$$1, 2, 3$$ tricarbonitrile
  • $$1, 2, 3$$-tricyanopropane
Give the functional group of the following.
-COOH
  • Aldehydic group
  • Alcoholic group
  • Ketonic group
  • Carboxylic group
Hexane exhibits chain isomerism. One of its isomers possesses two tertiary carbon atoms. Arrange the following steps in proper sequence to write IUPAC name for the respective isomer.
(a) Identification of number of carbon atoms in the main chain
(b) Writing the structure of respective isomer of hexane
(c) Numbering of carbon chain
(d) Giving position numbers for the alkyl groups attached to main chain
(e) Identification of nature of tertiary carbon atom
  • $$b\ a\ c\ e\ d$$
  • $$e\ a\ b\ f\ d$$
  • $$b\ e\ c\ a\ d$$
  • $$e\ b\ a\ c\ d$$
The secondary suffix 'one' indicates the following functional group in the compound.
  • $$-COOH$$
  • $$-OH$$
The functional group of aldehdye is:
 
Name the functional group of the given compound.

444119.jpg
  • Aldehydic group
  • Alcoholic group
  • Ketonic group
  • Carboxylic group
Identify the compound  $$CH_2 = CH (CH_2)_5 CH_3$$ :
  • hept-1-ene
  • non-1-ene
  • oct-1-ene
  • none of the above
Which of the following chemical names correctly corresponds to the chemical structure shown?
444179.png
  • Ethanol
  • Ethane
  • Ethene
  • Ether
Which of the following represents ketones?
  • > C = O
  • - OH
  • -CHO
  • -COOH
Give the functional group of the following.
-CHO
  • Aldehydic group
  • Alcoholic group
  • Ketonic group
  • Carboxylic group
Identify the compound with the help of molecular structure given in the figure :
$$H-\underset{H}{\underset{|}{\overset{H}{\overset{|}{C}}}}-\underset{H}{\underset{|}{\overset{H}{\overset{|}{C}}}}-\underset{H}{\underset{|}{\overset{H}{\overset{|}{C}}}}-\underset{H}{\underset{|}{\overset{H}{\overset{|}{C}}}}-H$$
  • propane
  • pentane
  • ethane
  • butane
Given below are few chemical compounds.
2-Hexanone $$(C_6H_{12}O)$$, 2-Butanone $$(C_4H_8O)$$, 3-Hexanone $$(C_6H_{12}O)$$, 3-Pentanone $$(C_5H_{10}O)$$
The functional group of ketones is ....................
  • -COOH
  • -CH = O
  • > C = O
  • -OH
Give the functional group of the following.
-OH
  • Aldehydic group
  • Alcoholic group
  • Ketonic group
  • Carboxylic group
Ethanol is also known as:
  • ethyl alcohol
  • ethane
  • acetaldehyde
  • formic acid
Which of these is the correct IUPAC name for isopropylbromide?
  • 2-propylbromide
  • 2-bromopropane
  • 2-bromo-2-methyl-ethane
  • None of these
Which of the following processes can be combined with filtration to isolate and greatly increase the purity of a solid?
  • Chromatography
  • Distillation
  • Crystallization
  • Decantation
Identify the compound with the help of molecular structure given in the figure:
$$H-\underset { H }{ \underset { | }{ \overset { H }{ \overset { | }{ C }  }  }  } -\underset { H }{ \underset { | }{ \overset { H }{ \overset { | }{ C }  }  }  } -\underset { H }{ \underset { | }{ \overset { H }{ \overset { | }{ C }  }  }  } -\underset { H }{ \underset { | }{ \overset { H }{ \overset { | }{ C }  }  }  } -\underset { H }{ \underset { | }{ \overset { H }{ \overset { | }{ C }  }  }  } -\underset { H }{ \underset { | }{ \overset { H }{ \overset { | }{ C }  }  }  } -H$$
  • propane
  • pentane
  • hexane
  • butane
Which of the following is an organic molecule?
  • SiO$$_2$$
  • NH$$_3$$
  • H$$_2$$O
  • CH$$_4$$
  • BeF$$_2$$
Which one of the following statements is correct?
  • Hybrid orbitals do not form $$\displaystyle \sigma $$ bonds
  • Lateral overlap of p-orbitals or p- and d- orbitals produces $$\displaystyle \pi $$ bonds
  • The strength of bonds follows the order:

    $$\displaystyle { \sigma }_{ p-p }<{ \sigma }_{ s-s }<{ \pi }_{ p-p }$$
  • s-orbitals do not form $$\displaystyle \sigma $$ bonds
The species containing a $$\pi$$ bond is:
  • $$BeF_{2}$$
  • $$NH_{3}$$
  • $$CH_{4}$$
  • $$CH_{2}CH_{2}$$
  • $$CCl_{4}$$
The bond that consist of an upper and a lower sharing of electron orbitals is called as :
  • a pi bond
  • a sigma bond
  • a hydrogen bond
  • a covalent bond
  • an ionic bond
The IUPAC name of acryldehdye is:
  • Prop-2-en-1-al
  • Propenylaldehyde
  • But-2-en-1-al
  • Propenal
Statement 1: A $$\pi$$ bond is formed between the lobes of adjacent $$p$$ orbitals in the same lane of two atoms that contain only one electron each.
Statement 2: Each of the two lobes of a single $$p$$ orbital can hold two electrons of opposite spin.

  • Both Statement 1 and Statement 2 are correct and Statement 2 is the correct explanation of Statement 1.

  • Both Statement 1 and Statement 2 are correct and Statement 2 is not the correct explanation of Statement 1.

  • Statement 1 is correct but Statement 2 is not correct.

  • Statement 1 is not correct but Statement 2 is correct.

  • Both the Statement 1 and Statement 2 are not correct.

The dark turquoise-green solid copper(II) carbonate dissolves in hydrochloric acid to form a :
  • green-blue solution of copper(II) chloride
  • red solution of copper(II) chloride
  • green-blue solution of copper(II) chlorinate
  • green-blue solution of carbon dioxide
Whose IUPAC name ends with  -ol?
  • $$R-OH$$
  • $$R-O-R$$
  • $$R-NH_{2}$$
  • $$R-COO-R$$
  • $$R-CO-R$$
Carbon and hydrogen in an organic compound are detected as ______.
  • $$CaHCO_3, CuSO_4\cdot 5H_2O$$
  • $$CaCO_3, CuSO_4\cdot 5H_2O$$
  • $$CaCO_3, Cu(OH)_2$$
  • $$CaHCO_3, CaCO_3$$
Which functional group is present in a molecule of $${CH}_{3}Cl$$?
  • Amine
  • Halide
  • Ether
  • Aldehyde
  • Ketone
Which term is the best match for the color of a chemical substance students make note of:
  • qualitative data
  • inference
  • observation
  • quantitative data
  • hypothesis
The functional group shown below represents:
521914.jpg
  • an alcohol
  • an ether
  • an aldehyde
  • a ketone
  • an organic acid derivative
Identify divalent functional group:
  • esters
  • ketones
  • aldehydes
  • alcohol
Which functional group is present in a molecule of $${CH}_{3}COOH$$?
  • Ether
  • Aldehyde
  • Carboxyl
  • Ester
  • Amine
The compound of the molecular formula, $$C_6H_{14}$$ has two tertiary carbons. Its IUPAC name is:
  • n-hexane
  • $$2-$$methylpentane
  • $$2,3-$$dimethylbutane
  • $$2,2-$$dimethylpentane
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