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1
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
A fluid is in streamline flow across a horizontal pipe of variable area of cross section. For this which of the following statements is correct?
A
The velocity is maximum at the narrowest part of the pipe and pressure is maximum at the widest part of the pipe.
B
Velocity and pressure both are maximum at the narrowest part of the pipe.
C
velocity and pressure both are maximum at the widest part of the pipe.
D
The velocity is minimum at the narrowest part of the pipe and the pressure is minimum at the widest part of the pipe.
2
NEET 2013 (Karnataka)
MCQ (Single Correct Answer)
+4
-1
The density of water at 20oC is 998 kg/m3 and at 40oC is 992 kg/m3. The coefficient of volume expansion of water is
A
3 $$ \times $$ 10$$-$$4/oC
B
2 $$ \times $$ 10$$-$$4/oC
C
6 $$ \times $$ 10$$-$$4/oC
D
10 $$ \times $$ 10$$-$$4/oC
3
NEET 2013
MCQ (Single Correct Answer)
+4
-1
A piece of iron is heated in a flame. It first becomes dull red then becomes reddish yellow and finally turns to white hot. The correct explanation for the above observation is possible by using
A
Kirchhoff's Law
B
Newton's Law of cooling
C
Stefan's Law
D
Wien's displacement Law
4
NEET 2013
MCQ (Single Correct Answer)
+4
-1
The wettability of a surface by a liquid depends primarily on
A
density
B
angle of contact between the surface and the liquid
C
viscosity
D
surface tension
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