General Science · NDA previous year questions

2014 7 questions

1. Q572014 · 28 Sept 2014

   Optical glass used in the construction of spectacles is made by

   1. A.flint glass
   2. B.Crookes glass
   3. C.quartz glass
   4. D.hard glass
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   Answer: A

2. Q722014 · 28 Sept 2014

   The densities of three liquids are $D,2D$ and $3D$. What will be the density of the resulting mixture if equal volumes of the three liquids are mixed?

   1. A.$6D$
   2. B.$1.4D$
   3. C.$2D$
   4. D.$3D$
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   Answer: C

3. Q792014 · 28 Sept 2014

   Which one among the following contains the most neutrons?

   1. A.${}_{26}^{59}\mathrm{Fe}$
   2. B.${}_{29}^{61}\mathrm{Cu}$
   3. C.${}_{30}^{61}\mathrm{Zn}$
   4. D.${}_{30}^{60}\mathrm{Z}{\mathrm{n}}^{2+}$
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   Answer: A

4. Q802014 · 28 Sept 2014

   Turpentine oil in paints is used as a

   1. A.pigment
   2. B.film-forming material
   3. C.thinner
   4. D.drier
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   Answer: C

5. Q822014 · 28 Sept 2014

   What is the oxidizing agent in the following equation? $\mathrm{HAs}{\mathrm{O}}_2(\mathrm{aq})+\mathrm{S}{\mathrm{n}}^{2+}(\mathrm{aq})+{\mathrm{H}}^{+}(\mathrm{aq})\to$ $\mathrm{As}(\mathrm{s})+\mathrm{S}{\mathrm{n}}^{4+}(\mathrm{aq})+{\mathrm{H}}_2\mathrm{O}(\mathrm{l})$

   1. A.$\mathrm{HAs}{\mathrm{O}}_2(\mathrm{aq})$
   2. B.$\mathrm{S}{\mathrm{n}}^{2+}(\mathrm{aq})$
   3. C.${\mathrm{H}}^{+}(\mathrm{aq})$
   4. D.$\mathrm{S}{\mathrm{n}}^{4+}(\mathrm{aq})$
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   Answer: A

6. Q832014 · 28 Sept 2014

   Which one of the following substances is most likely to be used as soap?

   1. A.$\mathrm{C}{\mathrm{H}}_3(\mathrm{C}{\mathrm{H}}_2{)}_{12}\mathrm{COOC}{\mathrm{H}}_3$
   2. B.$\mathrm{C}{\mathrm{H}}_3(\mathrm{C}{\mathrm{H}}_2{)}_5\mathrm{O}(\mathrm{C}{\mathrm{H}}_2{)}_5\mathrm{C}{\mathrm{H}}_3$
   3. C.$\mathrm{C}{\mathrm{H}}_3(\mathrm{C}{\mathrm{H}}_2{)}_{12}\mathrm{COONa}$
   4. D.$\mathrm{C}{\mathrm{H}}_3(\mathrm{C}{\mathrm{H}}_2{)}_{12}\mathrm{CHC}{\mathrm{l}}_2$
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   Answer: C

7. Q962014 · 28 Sept 2014

   Which one of the following is not a part of female reproductive system?

   1. A.Fallopian tube
   2. B.Cervix
   3. C.Urethra
   4. D.Vagina
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   Answer: C