Which one of the following have linear structure?(I) I3- (II

Subject

Chemistry

Class

JEE Class 12

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 Multiple Choice QuestionsMultiple Choice Questions

1.

Which of the following has the largest number of atoms?

  • 0.5 gm atom of Cu

  • 0.635 gm of Cu

  • 0.25 moles of Cu atoms

  • 1 gm of Cu


2.

The polypeptides are obtained by assembling the peptide units by

  • ionic bond

  • covalent bond

  • intermolecular H-bonding

  • covalent and H-bonding


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3.

Which one of the following have linear structure?

(I) I3- 

(II) NO2- 

(III) I3+ 

(IV) SO2

(V) N3-

  • I, II and III

  • I and V

  • II, III and IV

  • All of these


B.

I and V

I3- ion is made up of l2 molecule with an I- bonded to it by means of a coordinate bond. There are two bond pairs and three lone pairs. In the outer shell of central atom. To minimise the repulsive forces the three lone pairs occupy the equatorial positions. The ion is therefore, linear in shape with a bond angle of exactly 180°.

Similarly, N3- ion is also linear in shape.


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4.

The dipole moment of HBr is 1.6 × 10-30 cm and inter atomic spacing is 1 Å. The % ionic character of HBr is

  • 7

  • 10

  • 25

  • 27


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5.

The ratio of the difference in energy between the first and second Bohr orbit to that between the second and third Bohr orbit is

  • 12

  • 127

  • 49

  • 275


6.

A magnetic moment of 1.73 BM will be shown by which one among the following compounds

  • [Cu(NH3)4]2+

  • [Ni(CN)4]2-

  • TiCl4

  • [CoCl6]4-


7.

Which of the following pairs of ions cannot be separated by H2S in dilute HCl?

  • Bi3+, Sn4+

  • Al3+, Hg2+

  • Cu2+, Zn2+

  • Ni2+, Cu2+


8.

At equilibrium, if KP = 1, then

  • G° > 1

  • G° < 1

  • G° = 0

  • G° = 1


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9.

Which of the following is most acidic?

  • H2O

  • H2S

  • H2Se

  • H2Te


10.

The shape of [PtCl3(C2H4)]- and the hybridisation of Pt respectively are

  • tetrahedral, sp3

  • trigonal pyramidal, sp3

  • square planar, dsp2

  • square planar, d2sp3


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