1 Capacitance
A 10 µF capacitor is charged by a battery of e.m.f 100 volts. The energy stored in the capacitor is
(1) 0.5 mJ (2) 0.05 mJ (3) 0.05 J (4) 0.J
2
The chemical formula of chlorophyll-b is
(1) C55 H70 O5 N5 Mg (2) C55 H70 O6 N4 Mg (3) C55 H72 O5 N4 Mg (4) C55 H72 O5 N5 Mg
3 Motion of System of Particles and Rigid Body
A ball of mass m attached to the end of a string revolves in a vertical circle of radius R. When the ball is at the top of the circle it is moving horizontally with a speed v. What is the tension in the string when the ball is at the top of the circle?
1) (mv2 / R) -mg
2) mv2/ R
3) 0
4) mg
4 Mole Concept
If a mixture containing 3 moles of hydrogen and 1 mole of nitrogen is converted completely into ammonia, the ratio of initial and final volumes at the same temperature and pressure would be :
1) 1:2 2) 2:1 3) 1:3 4) 3:1
5 Basic Principles of Organic Chemistry
How many stereoisomers are therefor tartaric acid? 1) 2 2) 3 3) 4 4) 5
SOLUTION
d-tartaric acid, l-tartaric acid,meso-tartaric acid
6 Magnetic Effects of Current and Magnetism
In the coils and magnets lab, why did we zero the gaussmeter inside the iron pipe?
(1) To eliminate the systematic error of a zero offset.
(2) To measure the perpendicular component of the earth’s magnetic field.
(3) To offset the systematic error of the earth’s magnetic field.
(4) To estimate the error that arises with the uncertainty in distance.
7
Clitellium in Earth worm is situated in1. 13, 14, and 15th segments2. 14, 15, 16 th segments3. 15, 16, 17 th segments4. 19, 20, 21st segments
8
The food in onion is stored in the form of1) sugar2) cellulose3) starch4) protein
9 Basic Concepts of Chemistry
In a hydrocarbon, the mass of hydrogen to carbon is 1:3. The empirical formula of the hydrocarbon is 1) CH 2) CH2 3) CH4 4) C2H
Solution
Ratio of Hydrogen : Carbon mass 1 : 3 Ratio of atoms1 : 3/12 Or 4 : 1 H=4 atoms C=1 atom
10
Bradycardia is caused when-
(1) Heart beats exceed to more than 1OO per minute
(2) Heart beats reduced to less than 6O per minute
(3) Heart beats exceed to more than 8O per minute
(4) None of these
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