Download (c) ions absorb red

1. CuSO4.5 H2O is blue in colour because
(a) it contains water of crystallisation
(c) ions absorb red light
(b) ions absorb red light
(d) ions absorb all colours except red
2.
The transition metal ion with the least magnetic moment has the configuration
(a) 3d7
(b) 3d9
(c) 3d2
(d) 3d3
3.
If ‘n’ is the number of unpaired electrons, the magnetic moment (in Bohr magneton) is given by
(a)
(b)
n ( n − 2)
(c)
n ( n + 2)
n ( n − 1)
(d)
n ( n + 1)
4. The correct IUPAC name of the complex Fe(C5H5)2 is
(a) cyclopentadienyl iron (ii)
(c)dicyclopentadienyl ferrate (ii)
5.
(b) bis (cyclopentadienyl) iron (ii)
(d) ferrocene
Which of the following sulphides is not black in colour?
(a) CuS
(b) MnS
(c) CoS
(d) NiS
6. The complex ions [Co(NH3)5 (NO2)]2+ and [Co (NH3)5 (ONO)2+ are called
(a) ionisation isomers
(c) coordinate isomers
7. Which of the following is not optically active?
(a) [Co (en)3]3+
(c) cis – [CoCl2 (en)2]+
(b) linkage isomers
(d) geometrical isomers
(b) [Cr (ox)3]3–
(d) trans - [CoCl2(en)2]+
8. How many number of atoms are there in a cubic unit cell having one atom on each corner and two atoms
on each body diagonal of the cube?
(a) 8
(b) 6
(c) 4
(d) 9
9. Lithium selenide can be described as a closest packed array of selenide with lithium ions in all the
tetrahedral holes. The formula of lithium selenide is
(a) Li2 Se
(b) Li Se
(c) Li Se2
10.
11.
12.
(d) Li3 Se
Which of the following statements is not correct?
(a) the coordination number of each ion in CsCl crystal is 8
(b) a metal in bcc structure has a coordination number equal to 12
(c) a unit cell of an ionic crystal shares some of its ions with other unit cell
(d) the length of the unit cell in NaCl is 552 pm ()
The mass of a unit cell of NaCl corresponds to
(a) 1 Na+ and 6Cl–
(b) 1 Cl– and 6 Na+
(c)
1 Na+ and 1 Cl–
(d)
4 Cl– and 4 Na+
Which of the following complexes has a square planar structure?
(a) Ni(CO)4
(b) [Ni Cl4]2–