Part
A
1.
1. What
is the angle θ in the quadrant of a
circle shown below?
1. 135°
2. 90°
3. 120°
4. May have any value between 90° and 120°
2.
2. In ∆ ABC, angle A is larger than angle C and
smaller than angle B by the same
amount. If angle B is 67°, angle C is
1. 1. 67°
2. 2. 53°
3. 3. 60°
4. 4. 57°
3.
See
the following mathematical manipulations.
(i) Let x = 5
(ii) then x2-25~x-5
(iii) (x -5) (x + 5) = x -5
(iv) x + 5 = 1 [cancelling (x -5) from
both sides]
(v) 10 = 1 [Putting x = 5]
Which of the above is the wrong step?
1. (i) to (ii)
2. (iii) to (iv)
3. (ii) to (ii i)
4. (iv) to (v)
4.
3. Inner planets of the solar system are rocky,
whereas outer planets are gaseous. One of the reasons for this is that
1. Solar heat drove away
the gases to the outer region of the solar system
2. Gravitational pull of the sun pulled
all rocky material to the inner solar system
3. Outer planets are larger than the
inner planets
4. Comets delivered the gaseous
materials to the outer planets
5.
4.The number of craters observed due to
meteoritic impacts during the early stages of formation, is less on the Earth
than that on the Moon because
1. formation of craters on the Earth was difficult due to
the presence of hard rocks
2. impacting bodies on the Earth were smaller in size
3. craters on the Earth are now covered by ocean water
4. earlier craters are not preserved due to
continuous modification of Earth's surface by geological processes
6.
5. During
a total solar eclipse occurring at noon, it becomes dark enough for a few minutes
for stars to become visible. The stars that are seen are those which will be
seen from the same location
1. on the following night
only
2. on the night one month later
3. on the night three months later
4. on the night six months later
7.
6.The
variation of solubilities of two compounds X and Y in water with temperature is
depicted below. Which of the following statements are true ?
1. Solubility of Y is less than that of
X
2. Solubility of X varies with
temperature
3. Solubilities of X and
Y are the same at 75 °C
4.Solubilities of X and Y are
independent of temperature.
8.
7.Living beings get energy from food through the
process of aerobic respiration. One of the reactants are
1. CO2
2. Water vapor
3. O2
4. Phosphorous
9.
8.Restriction
endonuclease cleaves DNA molecules at specific recognition sites. One such
enzyme has four recognition sites on circular DNA molecule. After complete
digestion, how many fragments would be produced upon reaction with this enzyme.
1. 4
2. 5
3. 3
4. 6
10.
9.Which of the statements about the
concentration of Co2 in the Earth’s atmosphere is true?
1. It was the highest in the very early atmosphere of the
Earth
2, It has steadily decreased since the formation of the
Earth's atmosphere
3. It has steadily increased since the
formation of the Earth’s atmosphere
4. Its levels today are the highest in the Earth’s history
11.
10.Magnesium powder, placed in an air-tight glass
container at 1.0 bar, is burnt by focusing sunlight. Part of the magnesium
burns off and some is left behind. The pressure of the air in the container
after it has returned to room temperature is
approximately
1. 1 bar
2. 0.2 bar
3. 1.2 bar
4. 0.8 bar
12.
11.When a magnet is made to fall free in air, it
falls with an acceleration of 9.8 m s-2. But when it is made to fall through a
long aluminium cylinder, its acceleration decreases. Because
1. a part of the
gravitational potential energy is lost in heating the magnet
2. a part of the gravitational
potential energy is lost in heating the cylinder
3. the said experiment was done in the
magnetic northern hemisphere
4. the cylinder shields the
gravitational force
13.
12.A solid cube of side L floats on water with
20% of its volume under water. Cubes identical to it are piled one-by one on
it. Assume that the cubes do not slip or tupple, and the contact between their
surfaces is perfect. How many cubes are required to submerge one cube
completely?
1. 4
2. 5
3. 6
4. Infinite
14.
13.An
overweight person runs 4 km everyday as an exercise. After losing 20% of his
body weight, if he has to run the same distance in the -same time, the energy
expenditure would be
1. 20% more
2. the same as earlier
3. 20% less
4. 40% less
15.
15.
On exposure to desiccation, which of the following bacteria are least likely to
experience rapid water loss
1. Isolated rods
2. Rods in chain
3. Cocci in chain
4. Cocci in ciusters
16.
16.
A cupboard is filled with a large number of balls of 6 different colors. You already have one ball of
each color. If you are blind folded, how many balls do you need to draw to be
sure of having 3 color matched pairs of balls?
1. 3
2. 4
3. 5
4. 6
17.
17.
The conductance of a potassium chloride solution is measured using the
arrangement depicted below. The specific conductivity of the solution in Sm-1,
when there is no deflection in the galvanometer, is
1. 1
2. 0.5
3. 2
4. 1.5
18.
18.What is the half-life of the radio isotope
whose activity profile is shown below?
1. 1 day
2. 3 days
3. 2 days
4. 4 days
19. A bell is rung before giving food to a dog. After doing
this continuously for 10 days, which of
the following is most likely to happen?
1. The dog learns to ignore the bell
2. The dog salivates on hearing the bell
3. The dog ignores food and runs towards the bell
4. The dog will not eat food without hearing the bell
19.
20.
20.
For an elastic material, strain is proportional to stress. A constant stress is
applied at t1. Which of the following plots characterizes the strain in the
material?
Ans: A
A cupboard is filled with a large number of balls of 6 different colours. You already have one ball of each colour. If you are blind-folded, how many balls do you need to draw to be sure of having 3 colour matched pairs of balls?
ReplyDeletea. 3
C. 5
b. 4
d. 6
Solution ??
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