General Science · NDA previous year questions

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2012 18 questions

Q562012 · 19 Aug 2012
Which one among the following is not included in the major clinical sign as a case definition of AIDS in children < 12 years of age?
1. A.Persistent cough for more than 1 month
2. B.Loss of weight
3. C.Chronic diarrhoea
4. D.Prolonged fever
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Answer: A
Q582012 · 19 Aug 2012
Which one among the following is the hardest part of our body?
1. A.Skull bones of head
2. B.Thumb nails
3. C.Enamel of teeth
4. D.Spinal vertebra
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Answer: C
Q652012 · 19 Aug 2012
Consider the following statements : 1. Diamond is hard and graphite is soft. 2. Diamond is soft and graphite is hard. 3. Diamond is a bad conductor but graphite is a good conductor. 4. Diamond is a good conductor but graphite is a bad conductor. Which of the statements given above is/are correct ?
1. A.1 and 3
2. B.1 only
3. C.2 and 3
4. D.1 and 4
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Answer: A
Q672012 · 19 Aug 2012
Which one among the following equations is correctly balanced ?
1. A. $NaOH + Al + H_{2} O \to 2 H_{2} + NaAl O_{2}$
2. B. $2NaOH + 2Al + 2 H_{2} O \to 3 H_{2} + 2NaAl O_{2}$
3. C. $2NaOH + 2Al + 3 H_{2} O \to 4 H_{2} + 2NaAl O_{2}$
4. D. $2NaOH + 2Al + H_{2} O \to H_{2} + 2NaAl O_{2}$
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Answer: B
Q732012 · 19 Aug 2012
Given below is an approximate composition of a substance : $CaO$ 60-70% $Si O_{2}$ 20-25% $A l_{2} O_{3}$ 5-10% $F e_{2} O_{3}$ 2-3% The substance is
1. A.Plaster of Paris
2. B.Cement
3. C.Marble stone
4. D.Quartz
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Answer: B
Q762012 · 19 Aug 2012
Consider the following figure : Which of the following labelled points in the figure given above indicate unstable state of an object ?
1. A.Point A only
2. B.Point B only
3. C.Points A and C
4. D.Points B and D
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Answer: C
Q792012 · 19 Aug 2012
One feels heavier in a lift when the lift
1. A.is going down steadily
2. B.just begins to go up
3. C.is moving up steadily
4. D.descends freely
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Answer: B
Q812012 · 19 Aug 2012
Which one among the following statements about thermal conductivity is correct ?
1. A.Steel > Wood > Water
2. B.Steel > Water > Wood
3. C.Water > Steel > Wood
4. D.Water > Wood > Steel
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Answer: B
Q832012 · 19 Aug 2012
Which one among the following is the true representation of (i) variable DC potential (ii) rheostat and (iii) AC ammeter respectively?
1. A.Option A
2. B.Option B
3. C.Option C
4. D.Option D
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Answer: C
Q892012 · 19 Aug 2012
An iron ball and a wooden ball of the same radius are released from a height ‘H’ in vacuum. The time taken to reach the ground will be
1. A.more for the iron ball
2. B.more for the wooden ball
3. C.equal for both
4. D.in the ratio of their weights
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Answer: C
Q912012 · 19 Aug 2012
A body weighs 5 kg on equator. At the poles it is likely to weigh
1. A.5 kg
2. B.less than 5 kg but not zero
3. C.0 kg
4. D.more than 5 kg
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Answer: D
Q972012 · 19 Aug 2012
SONAR is mostly used by
1. A.Doctors
2. B.Engineers
3. C.Astronauts
4. D.Navigators
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Answer: D
Q982012 · 19 Aug 2012
A bucket full of water is kept in a room and it cools from $7 5^{\circ} C$ to $7 0^{\circ} C$ in time $T_{1}$ minutes, from $7 0^{\circ} C$ to $6 5^{\circ} C$ in time $T_{2}$ minutes, and from $6 5^{\circ} C$ to $6 0^{\circ} C$ in time $T_{3}$ minutes, then
1. A. $T_{1} = T_{2} = T_{3}$
2. B. $T_{1} < T_{2} < T_{3}$
3. C. $T_{1} > T_{2} > T_{3}$
4. D. $T_{1} < T_{3} < T_{2}$
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Answer: B
Q992012 · 19 Aug 2012
For a simple pendulum, the graph between $T^{2}$ and L (where T is the time period & L is the length) is
1. A.straight line passing through origin
2. B.parabolic
3. C.circle
4. D.none of the above
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Answer: A
Q762012 · 15 Apr 2012
Which of the following statements is/are correct? 1. Ligaments are highly flexible. 2. Ligaments connect muscles and bones. 3. Ligaments contain very little matrix. Select the correct answer using the code given below : Code :
1. A.1, 2 and 3
2. B.1 and 3 only
3. C.2 and 3 only
4. D.1 only
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Answer: B
Q862012 · 15 Apr 2012
When a solid object is immersed in water, there is a loss in its weight. This loss is
1. A.equal to the weight of the water displaced
2. B.less than the weight of the water displaced
3. C.greater than the weight of the water displaced
4. D.not related to the weight of the water displaced
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Answer: A
Q882012 · 15 Apr 2012
For a steel boat floating on a lake, the weight of the water displaced by the boat is
1. A.less than the weight of the boat
2. B.more than the weight of the boat
3. C.equal to the weight of the part of the boat which is below the water level of the lake
4. D.equal to the weight of the boat
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Answer: D
Q982012 · 15 Apr 2012
Consider the following statements : Hypermetropia is a defect of vision in which 1. a person cannot see the distant objects clearly 2. a person cannot see the near objects clearly 3. the near point of the eye gets shifted away from the normal position 4. the far point of the eye gets shifted towards the eye Which of the statements given above are correct?
1. A.1 and 3
2. B.2 and 4
3. C.1 and 4
4. D.2 and 3
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Answer: D