General Science · NDA previous year questions

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2011 16 questions

Q552011 · 21 Aug 2011
A biogeographic region with significant reservoir of biodiversity that is under threat from humans is called as
1. A.bioendangered region
2. B.biodiversity hotspot
3. C.biodiversity reservoir
4. D.environmentally endangered region
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Answer: B
Q582011 · 21 Aug 2011
Which one among the following is the largest monkey ?
1. A.Spider monkey
2. B.Baboon
3. C.Gorilla
4. D.Howler monkey
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Answer: B
Q652011 · 21 Aug 2011
The major component used in preparation of different types of glasses is
1. A.Silica
2. B.Sodium borate
3. C.Calcium silicate
4. D.Sodium silicate
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Answer: A
Q702011 · 21 Aug 2011
Refractive index of an optical medium changes with 1. the nature of the medium. 2. the change in the angle of incidence of the ray. 3. colour of the incident ray. Select the correct answer using the code given below:
1. A.1 and 3 only
2. B.2 and 3 only
3. C.1 and 2 only
4. D.1, 2 and 3
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Answer: A
Q712011 · 21 Aug 2011
A one-rupee coin is placed at the bottom of a vessel. Water is then poured into the vessel such that the depth of water becomes 20 cm. If water has refractive index 4/3, the coin would be seen at a depth of
1. A.20 cm
2. B.about 26 cm
3. C.15 cm
4. D.25 cm
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Answer: C
Q952011 · 21 Aug 2011
Which one among the following is not a mixture?
1. A.Graphite
2. B.Glass
3. C.Brass
4. D.Steel
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Answer: A
Q702011 · 17 Apr 2011
A liquid rises to a certain length in a capillary tube. The tube is inclined to an angle of 45°. The length of the liquid column will :
1. A.increase.
2. B.decrease.
3. C.remain unchanged.
4. D.first decrease and then increase.
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Answer: A
Q752011 · 17 Apr 2011
Which one among the following is the main ingredient in cement?
1. A.Gypsum
2. B.Lime stone
3. C.Clay
4. D.Ash
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Answer: B
Q772011 · 17 Apr 2011
Solutions in test tubes containing $H_{2} O$ and aqueous NaOH can be differentiated with the help of :
1. A.red litmus.
2. B.blue litmus
3. C. $N a_{2} C O_{3}$
4. D.HCl (aqueous)
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Answer: A
Q802011 · 17 Apr 2011
When concentrated $H_{2} S O_{4}$ spilts on the surface, it should be immediately cleaned :
1. A.with a piece of cloth.
2. B.by adding cold water.
3. C.by adding solid $N a_{2} C O_{3}$ .
4. D.by adding solid $BaC l_{2}$ .
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Answer: C
Q832011 · 17 Apr 2011
A student by chance mixed acetone with alcohol. This mixture of acetone and alcohol can be separated by :
1. A.filtration.
2. B.separating funnel.
3. C.fractional crystallization.
4. D.fractional distillation.
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Answer: D
Q892011 · 17 Apr 2011
Which of the statements about glass are correct? 1. Glass is a super-cooled liquid having infinite viscosity 2. Violet coloured glass is obtained by adding $Mn O_{2}$ 3. Glass is a man made silicate 4. Glass is a crystalline substance Select the correct answer using the code given below:
1. A.1, 2 and 4
2. B.2, 3 and 4
3. C.1, 2 and 3
4. D.1 and 3 only
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Answer: C
Q902011 · 17 Apr 2011
Sandalwood tree is considered a:
1. A.total root parasite.
2. B.total stem parasite.
3. C.stem parasite.
4. D.partial root parasite.
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Answer: D
Q932011 · 17 Apr 2011
Consider the following statements about comets: 1. Most comets have elongated elliptical orbits that take them close to the Sun for a part of their orbit, and then out into the further reaches of the Solar System for the remainder 2. If a comet is traveling fast enough, it may leave the Solar System Which of the statements given above is/are correct?
1. A.1 only
2. B.2 only
3. C.Both 1 and 2
4. D.Neither 1 nor 2
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Answer: C
Q952011 · 17 Apr 2011
Which of the following statements is/are correct? 1. In comparison to the Jupiter, planet Earth displays eclipses more frequently 2. On Mars only partial solar eclipses are possible Select the correct answer using the code given below:
1. A.1 only
2. B.2 only
3. C.Both 1 and 2
4. D.Neither 1 nor 2
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Answer: B
Q992011 · 17 Apr 2011
To a perpendicular to the plane of ecliptic, the Earth’s axis of rotation makes an angle of 23½ degrees. Had this angle been 0 degree, which one among the following would result?
1. A.There would have been no seasons
2. B.The length of day and night would have been the same throughout the year
3. C.The length of day and night would have been the same all over the earth
4. D.All of the above
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Answer: D