1
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
Electrolytic reduction of nitrobenzene in weakly acidic medium gives
A
N-phenylhydroxylamine
B
nitrosobenzene
C
aniline
D
p-hydroxyaniline.
2
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
In the reaction $${}_1^2$$H + $${}_1^3$$H $$ \to $$ $${}_2^4$$He + $${}_0^1$$n, if the binding
energies of $${}_1^2$$ H, $${}_1^3$$H and $${}_2^4$$He are respectively a, b and c (in MeV),
then the energy (in MeV) released in this reaction is
A
a + b + c
B
a + b $$-$$ c
C
c $$-$$ a $$-$$ b
D
c + a $$-$$ b
3
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
A 5-ampere fuse wire can withstand a maximum power of 1 watt in the circuit. The resistance of the fuse wire is
A
0.04 ohm
B
0.2 ohm
C
5 ohm
D
0.4 ohm
4
AIPMT 2005
MCQ (Single Correct Answer)
+4
-1
An electron moves in a circular orbit with a uniform speed v. It producess a magnetic field B at the centre of the circle. The radius of the circle is proportional to
A
$$\sqrt {B/v} $$
B
$$B/v$$
C
$$\sqrt {v/B} $$
D
$$v/B$$
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