Allyl cyanide molecule contains from Chemistry Chemical Bonding

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 Multiple Choice QuestionsMultiple Choice Questions

111.

Molecular formulae and shapes of some molecules are given below. Choose the incorrect match.

  • NH3 - Trigonal pyramidal

  • SF4 - Tetrahedral

  • ClF3 - T-shaped

  • PCl5 - Triginal bipyramidal


112.

In which one of the following the central atom is sp3 hydridised?

  • NH4+

  • BF3

  • SF6

  • PCl5


113.

The calculated magnetic moment of a divalent ion of an atom with atomic number 24 in aqueus solution is

  • 4.90 BM

  • 5.92 BM

  • 3.87 BM

  • 2.84 BM


114.

Molecular shapes of SF4 ,CF4 and XeF4 and the number of lone pairs on the central atom are respectively

  • the same, with 1, 2 and 1

  • the same with 1, 0 and 1

  • different with 0, 1 and 2

  • different with 1, 0 and 2


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115.

Which one of the following is not correct in respect of hybridization of orbitals?

  • The orbitals present in the valence shell are hybridized

  • The orbitals undergoing hybridization have akmost equal energy

  • Pure atomic orbitals are more effective in forming stable bonds than hybrid orbitals

  • It is not always that only partially filled orbitals participate in hybridization in some cases even filled orbitals in valence shell take part.


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116.

Allyl cyanide molecule contains

  • 9 sigma bonds, 4 pi bonds and no lone pair

  • 9 sigma bonds, 3 pi bonds and one lone pair

  • 8 sigma bonds, 5 pi bonds and one lone pair

  • 8 sigma bonds, 3 pi bonds and two lone pairs


B.

9 sigma bonds, 3 pi bonds and one lone pair

Allyl cyanide molecule consists of 9 sigma (σ), 3 pi (π) and 1 lone pair of electron.


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117.

Which one of the following statements is correct?

  • Ferromagnetic substance like ZnFe2O4 becomes paramagnetic on heating

  • NaCl is a paramagentic salt

  • CuSOis a diamagnetic salt

  • MnO is an example of antiferronmagnetic substance


118.

In the dichromate dianion, the nature of bonds are

  • for equivalent Cr-O bonds

  • six equivalent Cr-O bonds and one O-O bond

  • six equivalent Cr-O bonds and one Cr-Cr bond

  • six equivalent Cr-O bonds and one Cr-O-Cr bond


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119.

Amongst the following ions which one has the highest magnetic moment value? (At. no. Co = 27, Ni = 28)

  • [Co(NH3)6]3+

  • [CoF6]3-

  • [NiCl4]2-

  • [Ni(CN)4]2-


120.

Which among the following solid is a non-polar solid?

  • Hydrogen chloride

  • Sulphur dioxide

  • Water

  • Carbon dioxide


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