Sail E0 Webinar

General Knowledge > General Science

AROMATICITY MCQs

Total Questions : 20 | Page 1 of 2 pages
Question 1. Select the incorrect statement
  1.    A resonance may sometimes cause sp3 atoms to become sp2 hybridized
  2.    Delocalizing one lone pair causes aromaticity
  3.    One lone pair will be counted as two pi electrons according to Hickel's equation
  4.    Two sigma bonds make up a double bond
 Discuss Question
Answer: Option D. -> Two sigma bonds make up a double bond
Question 2. Select the correct statement regarding the aromatic nitrogen molecule
  1.    It is sp hybridized
  2.    It is not hybridized
  3.    It is sp2 hybridized
  4.    It is sp3 hybridized
 Discuss Question
Answer: Option C. -> It is sp2 hybridized
Question 3. Aromatic rings do not have resonance structures
  1.    False
  2.    True
 Discuss Question
Answer: Option A. -> False
Question 4. Stability sequence: primary carbocation > secondary carbocation > tertiary carbocation
  1.    Yes
  2.    No
 Discuss Question
Answer: Option B. -> No
Question 5. Which of the following is the reactive species in the nitration of benzene?
  1.    NO2–
  2.    NO2+
  3.    NO3
  4.    HNO3
 Discuss Question
Answer: Option A. -> NO2–
Question 6. The number of delocalised 𝞹 electrons in the benzene ring are
  1.    2
  2.    4
  3.    6
  4.    8
 Discuss Question
Answer: Option C. -> 6
Question 7. Which of the following statements is not correct regarding aromatic compounds?
  1.    aromatic compounds are planar
  2.    aromatic compounds have 4n -electrons
  3.    aromatic compounds are cyclic
  4.    aromatic compounds are generally less reactive than similarly substituted alkenes
 Discuss Question
Answer: Option B. -> aromatic compounds have 4n -electrons
Question 8. Which of the following statements is true for benzene?
  1.    Two types of C-C bonds are present in benzene
  2.    Benzene easily undergoes addition due to unsaturation
  3.    𝞹-electrons are delocalised in the benzene ring
  4.    Three isomeric forms are formed on monosubstitution of benzene
 Discuss Question
Answer: Option C. -> 𝞹-electrons are delocalised in the benzene ring
Question 9. Which of the following is not a characteristic property of arenes?
  1.    Resonance
  2.    Greater stability
  3.    Electroscopic additions
  4.    Delocalisation of 𝞹-electrons
 Discuss Question
Answer: Option C. -> Electroscopic additions
Question 10. Which of the following is an incorrect description of benzene?
  1.    The molecule is planar.
  2.    The molecule is aromatic.
  3.    The molecule is a 6-membered ring which contains alternating single and double carbon-carbon bonds.
  4.    The CCC bond angles are all equal to 120°.
 Discuss Question
Answer: Option C. -> The molecule is a 6-membered ring which contains alternating single and double carbon-carbon bonds.

Latest Videos
Chapter 1 - GLOBAL STEEL SCENARIO & INDIAN STEEL INDUSTRY Part 1 : (13-04-2024) INDUSTRY AND COMPANY AWARENESS (ICA)
Direction Sense Test Part 1 Reasoning (Hindi)
Chapter 1 - RMHP / OHP / OB & BP Part 1 : (14-02-2024) GPOE
Cube & Cuboid Part 1 Reasoning (Hindi)
Data Interpretation (DI) Basic Concept Reasoning (Hindi)
Counting Figures Part 1 Counting Of Straight Lines Reasoning (Hindi)
Sail E0 free webinar Webinars
Real Numbers Part 7 Class 10 Maths
Real Numbers Part 1 Class 10 Maths
Polynomials Part 1 Class 10 Maths

Latest Test Papers

Pie Chart - Test Paper 1 Data Interpretation Reasoning & DI
Tabulation - Test Paper 2 Data Interpretation Reasoning & DI
Test Paper 1 Direction Sense Test Reasoning & DI
ICA , RDIC,GFM Free Modal Test Paper - Non - Technical Branch Old Syllabus 2022 - SAIL Junior Officer E0
GFM Combined 1 Free Revision Test SAIL JO E-0