Transition Elements MCQ's 3

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MCQ's with answers from chapter 6 Transition Elements chemistry book 2 for FSC pre engineering and pre medical for Board of Intermediate and Secondary education. Also For Entry Test Preparation for UET, NUST, PIEAS, GIKI, AIR, FAST, WAH University, UHS, other eningeering Universities and Medical Colleges.
Set 1:


1. The number of sigma and pi bonds in 1-Butene-3-yne are
  1. 1. 5 sigma and 5 pi
  2. 7 sigma and 1 pi
  3. 7 sigma and 3 pi
  4. 6 sigma and 4 pi
2. A sp3 hybrid orbital contains
  1. ¼ s-character
  2. ½ s-character
  3. 2/3 s-character
  4. ¾ s-character
3. Which has the order 2.5?
  1. O2
  2. N2+
  3. F2
  4. H2
4. Which one of the following molecules is trigonal bi pyramidal
  1. BF3
  2. CH4
  3. PCl5
  4. SF6
5. Which compound will be least soluble in polar solvent
  1. MgS
  2. Na2S
  3. MgCl2
  4. NaCl

Answers: 

  1. 7 sigma and 3 pi
  2. ¼ s-character
  3. N2+
  4. PCl5
  5. MgS


Set 2:

  1. The C-C bond distance is longest in
    1. C2H2
    2. C2H4
    3. C2H6
    4. C6H6
  2. Atomic redii can be determined with the help of
    1. X rays
    2. Microwaves
    3. I.R waves
    4. UV waves
  3. A chemical bond between the most electropositive and most electronegative elements shall be _____ in nature.
    1. Covalent
    2. Co-ordinate
    3. Hydrogen
    4. ionic
  4. The number of bonds in Nitrogen molecule is
    1. One sigma and one pi
    2. Two sigma and one pi
    3. One sigma and two pi
    4. Three sigma
  5. Which type of bonding is present in NH4Cl
    1. Ionic
    2. Covalent
    3. Coordinate covalent

Answers: 
  1. C2H6
  2. X-rays
  3. Ionic
  4. One sigma and 2 pi
  5. all

I am Mechatronics and Control Engineer from UET, Lahore. Helping Engineering students gives me pleasure.

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