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2010 42 questions

Q512010 · 22 Aug 2010
The next four (04) items are based on the following Table : Match List I with List II, List III and List IV and select the correct answer using the code given below : $List I (Body system) A. Blood Circulation B. Excretory C. Alimentary D. Skeletal E. Blood F. Respiratory G. Neurological H. Immunological List II (Organ) 1. Bone marrow 2. Thymus 3. Intestine 4. Lung 5. Bone 6. Heart 7. Kidney 8. Neuron List III (Structure) I. Alveoli II. T-lymphocyte III. Myocardium IV. Matrix V. Nephron VI. Villi VII. Axon VIII. Platelets List IV (Function of the system) i. Clot formation ii. Perfusion of tissues iii. Support and protect of body frame iv. Oxygenation v. Filtration of body waste vi. Absorption of nutrients vii. Fighting infection and foreign invasion viii. Transmission of electrical impulse$ List I List II List III List IV
1. A.A 1 III ii
2. B.B 7 VI v
3. C.A 6 III ii
4. D.B 2 V v
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Answer: C
Q612010 · 22 Aug 2010
Which among the following are the properties of good paint ? 1. The paint should be opaque and have high covering power 2. The solid particles in paint should reflect much of the destructive light to ensure long life of the paint 3. Combination of pigments, e.g., white lead and $Ti O_{2}$ give better result 4. Addition of plasticiser destroy the elasticity of the film and leads to cracking Select the correct answer using the code given below :
1. A.1, 2 and 4
2. B.1, 2 and 3
3. C.2 and 3 only
4. D.1 and 3 only
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Answer: B
Q762010 · 22 Aug 2010
Which one of the following characteristics of the particle does the shaded area of the velocity-time graph shown above represent?
1. A.Momentum
2. B.Acceleration
3. C.Distance covered
4. D.Speed
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Answer: C
Q772010 · 22 Aug 2010
A body is at rest on the surface of the earth. Which one among the following statements is correct regarding this?
1. A.No force is acting on the body
2. B.Only weight of the body acts on it
3. C.Net downward force is equal to the net upward force
4. D.None of the above statements is correct
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Answer: C
Q782010 · 22 Aug 2010
A pendulum beats faster than a standard pendulum. In order to bring it to the standard beat, the length of the pendulum is to be :
1. A.reduced
2. B.increased
3. C.reduced and the mass of the bob increased
4. D.reduced and also the mass of the bob reduced
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Answer: B
Q792010 · 22 Aug 2010
Two identical blocks of ice, A and B, float in water as shown in the figure given above. Which one among the following statements in this regard is correct?
1. A.Block A displaces a greater volume of water since the pressure acts on a smaller bottom area
2. B.Block A displaces a greater volume of water since its submerged end is lower in the water
3. C.Block B displaces a greater volume of water since its submerged end has a greater area in water
4. D.The two blocks displace equal volumes of water since they have the same specific gravity and same mass
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Answer: D
Q802010 · 22 Aug 2010
When a ship floats on water :
1. A.it displaces no water
2. B.the mass of water displaced is equal to the mass of the ship
3. C.the mass of water displaced is lesser than the mass of the ship
4. D.the mass of water displaced is greater than the mass of the ship
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Answer: B
Q812010 · 22 Aug 2010
Sound moves with higher velocity if :
1. A.pressure of the medium is decreased
2. B.temperature of the medium is increased
3. C.humidity of the medium is increased
4. D.both (b) and (c) above
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Answer: D
Q822010 · 22 Aug 2010
Which one of the following is the correct angle between the incident and reflected rays when a ray of light incident normally on a plane mirror?
1. A.180°
2. B.90°
3. C.45°
4. D.0°
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Answer: D
Q832010 · 22 Aug 2010
Which one of the following four glass lenses is a diverging lens?
1. A.Option A
2. B.Option B
3. C.Option C
4. D.Option D
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Answer: A
Q842010 · 22 Aug 2010
Magnetism of a bar magnet can be destroyed if it is : 1. kept in the magnetic meridian. 2. placed in a direction opposite that of the Earth's horizontal intensity. 3. heated to a temperature known as Curie temperature. Select the correct answer using the code given below :
1. A.1 and 3 only
2. B.2 only
3. C.2 and 3 only
4. D.1, 2 and 3
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Answer: C
Q862010 · 22 Aug 2010
If two conducting spheres are separately charged and then brought in contact :
1. A.the total energy of the two spheres is conserved
2. B.the total charge on the spheres is conserved
3. C.both the total energy and charge are conserved
4. D.the final potential is always the mean of the original potential of the two spheres
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Answer: B
Q892010 · 22 Aug 2010
The direction of magnetic field at a point due to an infinitely long wire carrying current is :
1. A.parallel to the current
2. B.antiparallel to the current
3. C.along the perpendicular drawn from a point on the wire
4. D.perpendicular to the plane containing the conductor and the point
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Answer: D
Q912010 · 22 Aug 2010
A man is sitting on a rotating stool with his arms outstretched. If suddenly he folds his arm the angular velocity of the man would :
1. A.increase
2. B.decrease
3. C.become zero
4. D.remain constant
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Answer: A
Q922010 · 22 Aug 2010
For a particle revolving in a circular path, the acceleration of the particle is :
1. A.along the tangent
2. B.along the radius
3. C.zero
4. D.along the circumference of the circle
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Answer: B
Q932010 · 22 Aug 2010
A circus performer of mass M is walking along a wire as shown in the figure given above. The tension T in the wire is : (g = acceleration due to gravity)
1. A.approximately Mg
2. B.less than Mg
3. C.more than Mg
4. D.depends on whether the performer stands on one or two feet
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Answer: C
Q952010 · 22 Aug 2010
The visible light has a wavelength range from about 380 nm (violet) to 780 nm (red). If an excited object emits light with wavelength of 15 nm, to which one of the following ranges does it belong?
1. A.X-ray
2. B.Gamma ray
3. C.Infrared
4. D.Ultraviolet
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Answer: D
Q962010 · 22 Aug 2010
Microwave oven consumes less power due to :
1. A.small frequency of radiation
2. B.short wavelength of radiation
3. C.large frequency as well as wavelength of radiation
4. D.small frequency as well as wavelength of radiation
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Answer: A
Q972010 · 22 Aug 2010
The sun is constantly radiating energy and yet its surface temperature is nearly constant at 6000°C. The constancy of solar temperature is due to :
1. A.fission
2. B.radioactivity
3. C.fusion
4. D.black hole evaporation
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Answer: C
Q982010 · 22 Aug 2010
An annular solar eclipse occurred during January 2010 with duration of annularity around 12 minutes. It is predicted that such long annular duration will not occur till the year 3043. Such prediction is possible due to :
1. A.Einstein's theory of relativity
2. B.Darwin's theory of natural selection
3. C.Newton's theory of gravitation
4. D.Hawking's theory of black hole
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Answer: C
Q632010 · 18 Apr 2010
'Pitch' is a characteristic of sound that depends upon its
1. A.intensity
2. B.frequency
3. C.quality
4. D.None of the above
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Answer: B
Q652010 · 18 Apr 2010
The effective resistance of three equal resistances, each of resistance $r$ , connected in parallel, is
1. A. $3/ r$
2. B. $r /3$
3. C. $3 r$
4. D. $r^{3}$
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Answer: B
Q662010 · 18 Apr 2010
A fan produces a feeling of comfort during hot weather, because
1. A.our body radiates more heat in air
2. B.fan supplies cool air
3. C.conductivity of air increases
4. D.our perspiration evaporates rapidly
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Answer: D
Q682010 · 18 Apr 2010
The ratio of velocity of X-rays to that of gamma rays
1. A.is $< 1$
2. B.is $> 1$
3. C.is 1
4. D.depends upon the ratio of their frequencies
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Answer: C
Q692010 · 18 Apr 2010
Which one of the following pairs of rays is electromagnetic in nature?
1. A.Beta rays and gamma rays
2. B.Cathode rays and X-rays
3. C.Alpha rays and beta rays
4. D.X-rays and gamma rays
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Answer: D