NDA/NA SOLVED PAPER 2015-II (GENERAL KNOWLEDGE)

Total Questions: 100

31. Which one of the following statements is not correct?

Correct Answer: (c) The capacity to do work is called power
Solution:

Capacity to do work is called energy.

32. A man is sitting in a train which is moving with a velocity of 60 km/hour. His speed with respect to the train is:

Correct Answer: (d) zero

33. Match List I with List II and select the correct answer using the code given below the Lists:

List I (Place)List I (Normal vegetation type)
A. Western Ghats1. Tropical Moist Deciduous
B. Himachal Pradesh2. Tropical Evergreen
C. Haryana and Punjab3. Himalayan Moist Forest
D. Chhotanagpur Plateau4. Tropical Thorny Forest

Codes:

ABCD
(a)2341
(b)1432
(c)2431
(d)1342
Correct Answer: (a)
Solution:

Western ghats - Tropical evergreen
Himachal Pradesh - Himalayan moist forest
Haryana and Punjab - Tropical thorny forest
Chhotanagpur Plateau - Tropical moist deciduous

34. The term 'Regur' is used to mean:

Correct Answer: (d) Black cotton soil
Solution:

Regur is a black soils are found in lava-covered areas of Maharashtra, Saurashtra, Northern Karnataka, etc. and this soil is very good for cotton.

35. Graphite is a much better conductor of heat and electricity than diamond. This is due to the fact that each carbon atom in graphite:

Correct Answer: (a) undergoes sp² hybridization and forms three sigma bonds with three neighbouring carbon atoms
Solution:

Undergoes sp2 hybridization and forms three sigma bonds with three neighbouring carbon atoms.

36. Which one of the following vitamins is synthesized in our own skin?

Correct Answer: (d) Vitamin D
Solution:

Dermal synthesis of vitamin D from cholesterol is dependent on sun exposure.

37. Which one of the following is the SI unit of the thermal conductivity of a material?

Correct Answer: (a) Wm⁻¹K⁻¹
Solution:

In SI units, thermal conductivityis measured in watts per meter kelvin (W/(m. K)).

38. Which one of the following statements is not correct?

Correct Answer: (d) The temperature at which a solid changes into a liquid is called the boiling point
Solution:

The temperature at which a solid changes into a liquid is called the melting point.

39. Which one of the following combinations of stalactites and stalagrnites occurrences is correct?

Correct Answer: (b) Stalactites hang as icicles of different diameters and stalagmites rise up from the floor of the caves
Solution:

Stalactites hang from the ceiling ofa cave like icicles, while stalagmites rise from the cave floor. Both stalactites and stalagmites are mineral deposits that form in caves due to dripping water. Thus, option (b) is correct.

40. Which one of the following is the correct sequence about various levels of organization of Biosphere?

Correct Answer: (d) Organism - Population - Eco system - Biosphere
Solution:

Organism→Population → Ecosystem → Biosphere