1
IIT-JEE 2004 Screening
MCQ (Single Correct Answer)
+2
-0.5
The pair of compounds having metals in their highest oxidation state is
A
MnO2, FeCl3
B
[MnO4]-, CrO2Cl
C
[Fe(CN)6]3-, [Co(CN)3]
D
[NiCl4]2- , [CoCl4]-
2
IIT-JEE 2003 Screening
MCQ (Single Correct Answer)
+2
-0.5
Which has maximum number of atoms?
A
24 g of C(12)
B
56g of Fe(56)
C
27g of Al(27)
D
108g of Ag(108)
3
IIT-JEE 2003 Screening
MCQ (Single Correct Answer)
+2
-0.5
Mixture X = 0.02 mol of [Co(NH3)5SO4]Br and 0.02 mol of [Co(NH3)5Br]SO4 was prepared in 2 litre of solution.
1 litre of mixture X + excess AgNO3 $$ \to $$ Y.
1 litre of mixture X + excess BaCl2 $$ \to $$ Z
No. of moles of Y and Z are
A
0.01, 0.01
B
0.02, 0.01
C
0.01, 0.02
D
0.02, 0.02
4
IIT-JEE 2002 Screening
MCQ (Single Correct Answer)
+2
-0.5
How many moles of electron weigh one kilogram?
A
$$6.023 \times {10^{23}}$$
B
$${1 \over {9.108}} \times {10^{31}}$$
C
$${{6.023} \over {9.108}} \times {10^{54}}$$
D
$${1 \over {9.108 \times 6.023}} \times {10^8}$$
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