Self Studies
Self Studies
Self Studies
Self Studies

Hydrocarbons Test - 5

Result Self Studies

Hydrocarbons Test - 5
  • Score

    -

    out of -
  • Rank

    -

    out of -
TIME Taken - -
Self Studies

SHARING IS CARING

If our Website helped you a little, then kindly spread our voice using Social Networks. Spread our word to your readers, friends, teachers, students & all those close ones who deserve to know what you know now.

Self Studies Self Studies
Weekly Quiz Competition
  • Question 1
    1 / -0
    The alkyne which will react with KMnO4 to give pyruvic acid is
  • Question 2
    1 / -0
    An aromatic compound X (C7H7Cl) on oxidation gives an aromatic compound Y. The soda lime decarboxylation of Y gives benzene. X is
  • Question 3
    1 / -0

    Some of the polynuclear hydrocarbons having fused benzene ring system have the property of being

    Solution

    Polynuclear hydrocarbons are carcinogenic,i.e. cancer producing

  • Question 4
    1 / -0

    Majority of the reactions of alkynes are the examples of

    Solution

    Alkynes have two pi bonds,hence they are electron rich species.They attract electrophiles thereby undergoing electrophilic addition reactions.

  • Question 5
    1 / -0
    Isopropyl bromide on Wurtz reaction gives
  • Question 6
    1 / -0
    Which of the following is not aromatic?
  • Question 7
    1 / -0

    The unusual behavior of benzene is explained by

    Solution

    resonance stabilisation explains the unusual stability of benzene.There is pi electron delocalisation in the ring which enhances the stability of the molecule.

  • Question 8
    1 / -0
    Which of the following molecules will have dipole moment?

    A. 2, 2-dimethylpropane
    B. trans-pent-2-ene
    C. cis-3-hexene
    D. 2, 2, 3, 3-tetramethylbutane
  • Question 9
    1 / -0
    Choose the correct IUPAC name of the given structure.

  • Question 10
    1 / -0
    Which of the following organic compounds boils at the highest temperature?
  • Question 11
    1 / -0
    The IUPAC name of is
  • Question 12
    1 / -0

    In Friedel-Crafts alkylation reaction, when benzene is treated with an alkyl halide in the presence of a catalyst, alkylbenene is formed. The catalyst used is

    Solution

    the acid chloride or anhydride reacts with anhydrous aluminium chloride to form the acylium ion which serves as an electrophile which then attacks the benzene ring to give alkylbenzene.

  • Question 13
    1 / -0
    The IUPAC name of the compound having the formula CH≡C-C=CH2 is
  • Question 14
    1 / -0
    When 3, 3-dimethyl-2-butanol is heated with H2SO4, the major product is
  • Question 15
    1 / -0
    The compound which reacts with HBr obeying Markovnikoff's rule is
  • Question 16
    1 / -0

    Which of the following method is not a synthetic method for production  of Benzene?

    Solution

    Since isolation of benzene from coal tar involves  separation of benzene from other components  through a physical operation  "fractional distillation"  , it is NOT a synthetic method for  production of benzene.  

  • Question 17
    1 / -0
    Arrange the following alkyl halides in decreasing order of the rate of -elimination reaction with alcoholic KOH:

    A. CH3-CH(CH3)-CH2Br
    B. CH3-CH2-Br
    C. CH3-CH2-CH2-Br
  • Question 18
    1 / -0

    Aromatic compounds are characterized by the presence of _____ π electrons in the ring where n is an integer (n = 0, 1, 2, . . .).


    Solution

    Huckel rule which explains the unusual stability of cyclic conjugated polyenes(i.e. aromatic compounds) over other cyclic unsaturatrd compounds which do not contain (4n+2) pi electrons.

  • Question 19
    1 / -0
    On mixing certain alkane with chlorine and irradiating it with ultraviolet light, it forms only one monochloro alkane. The alkane could be
  • Question 20
    1 / -0
    The lowest alkene which is capable of exhibiting geometrical isomerism is
  • Question 21
    1 / -0
    Among the three conformations of butane, the order of stability follows the sequence
  • Question 22
    1 / -0
    Which preferred product will be formed when 2-methyl butane-1-ol is dehydrated?
  • Question 23
    1 / -0
    In the following reaction, the compound A is

  • Question 24
    1 / -0
    In the following reaction, identify product Z.

  • Question 25
    1 / -0
    Directions: The following question has four choices out of which ONLY ONE is correct.

    The strongest ortho-para and strongest meta-directing groups respectively are
  • Question 26
    1 / -0

    Thus ethyne molecule consists of

    Solution

    Ethyne is an unsaturated compound which belongs to the alkyne family and has the formula C2H2.Thus it  consists of one C–C σ bond, two C–H σ bonds and two C–C π bonds.

  • Question 27
    1 / -0

    Arrange the following in decreasing order of their boiling points. (A) n–butane (B) 2–methylbutane (C) n-pentane (D) 2,2–dimethylpropane

    Solution

    Boiling point depends on molecular mass and surface area.As the number of carbon atoms increase,boiling point increases ,hence n-butane has the minimum boiling point.Among isomeric alkanes,boiling point decreases with branching.Hence the order.

  • Question 28
    1 / -0
    Which of the following statements are not correct for alkanes?

    A. All C-H and C-C bonds are of lengths 1.12 Ao and 1.54 Ao, respectively.
    B. All bond angles are tetrahedral, having a value of 109o28/109.5o.
    C. The C-C chain is linear and not zigzag.
    D. All alkanes exhibit isomerism.
  • Question 29
    1 / -0
    Lindane can be obtained by the reaction of benzene with
  • Question 30
    1 / -0
    Elimination of bromine from 2-bromobutane results in the formation of
  • Question 31
    1 / -0
    The dihedral angle in the staggered conformation of C2H6 is
  • Question 32
    1 / -0

    The number of position isomers of C5H8 is

    Solution

    n-pentyne  , 3-methyl butyne, pent-2-yne

  • Question 33
    1 / -0
    Arrange the following alkanes in decreasing order of their boiling points:

    A. n-butane
    B. 2-methylbutane
    C. n-pentane
    D. 2, 2-dimethylpropane
  • Question 34
    1 / -0
    Which of the following does not dissolve in conc. H2SO4?
  • Question 35
    1 / -0

    When two hydrogen atoms in benzene are replaced by two similar or different monovalent atoms or groups, how many different position isomers are possible?

    Solution

    the three isomers will be ortho(i.e.1,2- or 1,4-disubstituted) , meta(i.e.1,3- or 1,5-disubstituted) and para(1,4-disubstituted)

Self Studies
User
Question Analysis

  • Correct -

  • Wrong -

  • Skipped -

My Perfomance
  • Score

    -

    out of -
  • Rank

    -

    out of -
Re-Attempt Weekly Quiz Competition
Self Studies Get latest Exam Updates
& Study Material Alerts!
No, Thanks
Self Studies
Click on Allow to receive notifications
Allow Notification
Self Studies
Self Studies Self Studies
To enable notifications follow this 2 steps:
  • First Click on Secure Icon Self Studies
  • Second click on the toggle icon
Allow Notification
Get latest Exam Updates & FREE Study Material Alerts!
Self Studies ×
Open Now