1
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
Which of the following statement is not correct?
A
La(OH)3 is less basic than Lu(OH)3.
B
In lanthanide series ionic radius of Lu+3 ion decreases.
C
La is actually an element of transition series rather lanthanides.
D
Atomic radius of Zn and Hf are same because of lanthanide contraction.
2
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
The most convenient method to protect the botton of ship made of iron is
A
coating it with red lead oxide
B
white tin plating
C
connecting it with Mg block
D
connecting it with Pb block.
3
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
A human body required 0.01 m activity of radioactive substance after 24 hours. Half life of radioactive substance is 6 hours. Then inhection of maximum activity of radioactive substance that can be injected is
A
0.08
B
0.04
C
0.16
D
0.32
4
AIPMT 2001
MCQ (Single Correct Answer)
+4
-1
If a $${}_b^aX$$ species emits first a position, then two a and two b particles and in the last, one a, is also emitted and gets converts to $${}_d^c$$Y species. So correct relation is
A
c = a $$-$$ 12, d = b $$-$$ 5
B
c = a $$-$$ 5, d = b $$-$$ 1
C
c = a $$-$$ 6, d = b $$-$$ 0
D
c = a $$-$$ 4, d = b $$-$$ 2
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