1
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
Among the following which is not the $$\pi $$-bonded organometallic compound?
A
K [PtCl3 ($$\eta $$2 $$-$$ C2H4)]
B
Fe ($$\eta $$5 $$-$$ C5H5)2
C
Cr ($$\eta $$6 $$-$$ C6H6)2
D
(CH3)4Sn
2
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
If a ball is thrown vertically upwards with speed u, the distance covered during the last t seconds of its ascent is
A
ut
B
$${1 \over 2}$$ gt2
C
ut $$-$$ $${1 \over 2}$$ gt2
D
(u + gt) t.
3
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
A man throws balls with the same speed vertically upwards one after the other at an interval of 2 seconds. What should be the speed of the throw so that more than two balls are in the sky at any time ? (Given g = 9.8 m/s2)
A
more than 19.6 m/s
B
at least 9.8 m/s
C
any speed less than 19.6 m/s
D
only with speed 19.6 m/s.
4
AIPMT 2003
MCQ (Single Correct Answer)
+4
-1
The vector sum of two forces is perpendicular to their vector differences. In that case, the forces
A
are equal to each other
B
are equal to each other in magnitude
C
are not equal to each other in magnitude
D
cannot be predicted.
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