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MCQs

Total Questions : 740 | Page 73 of 74 pages
Question 721. Six-membered ring with alternate double and single bonds is called
  1.    Cyclopropane
  2.    benzene
  3.    Ethene
  4.    Propene
 Discuss Question
Answer: Option B. -> benzene
Answer: (b).benzene
Question 722. Minus 1 charge is used for the ion
  1.    Nitride
  2.    Nitrate
  3.    Nitrite
  4.    All of above
 Discuss Question
Answer: Option B. -> Nitrate
Answer: (b).Nitrate
Question 723. When -OH group is attached to the benzene ring, then it is known as
  1.    Toluene
  2.    Aniline
  3.    Phenol
  4.    Naphthalene
 Discuss Question
Answer: Option C. -> Phenol
Answer: (c).Phenol
Question 724. The name marsh gas was given to methane because it is found in
  1.    Rocks
  2.    Minerals
  3.    Marshy places
  4.    Water
 Discuss Question
Answer: Option C. -> Marshy places
Answer: (c).Marshy places
Question 725. The silicates have the same charge as
  1.    Hydrogen
  2.    Oxygen
  3.    Nitrogen
  4.    Carbonates
 Discuss Question
Answer: Option D. -> Carbonates
Answer: (d).Carbonates
Question 726. Organic compounds are divided into main types
  1.    Two
  2.    Three
  3.    Four
  4.    Five
 Discuss Question
Answer: Option A. -> Two
Answer: (a).Two
Question 727. The compounds formed by non-metals only are
  1.    Ionic compounds
  2.    Covalent Compounds
  3.    Coordinate covalent compound
  4.    All of above
 Discuss Question
Answer: Option B. -> Covalent Compounds
Answer: (b).Covalent Compounds
Question 728. The chemical formula of ammonia is
  1.    NH₂
  2.    NH₃
  3.    C₆H₆
  4.    CH₄
 Discuss Question
Answer: Option B. -> NH₃
Answer: (b).NH₃
Question 729. Organic compounds in which first and last carbon atoms are free are called
  1.    Aliphatic
  2.    Aromatic
  3.    Cyclic
  4.    Hemicyclic
 Discuss Question
Answer: Option A. -> Aliphatic
Answer: (a).Aliphatic
Question 730. The hybridization in CH₂ = CH₂ is
  1.    sp2
  2.    sp
  3.    sp3
  4.    dsp2
 Discuss Question
Answer: Option B. -> sp
Answer: (b).sp

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