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Hi buddy here I am looking for National Defence Academy Sample Papers so would you plz provide me or tell me from where I can do download ??

[vikash]

As you want here I am giving below National Defence Academy Sample Papers on your demand :

Question 1: Radiocarbon is produced in the atmosphere as a result of

collision between fast neutrons and nitrogen nuclei present in the atmosphere
action of ultraviolet light from the sun on atmospheric oxygen
action of solar radiations particularly cosmic rays on carbon dioxide present in the atmosphere
lightning discharge in atmosphere

Answer: 1

Question 2: It is easier to roll a stone up a sloping road than to lift it vertical upwards because

work done in rolling is more than in lifting
work done in lifting the stone is equal to rolling it
work done in both is same but the rate of doing work is less in rolling
work done in rolling a stone is less than in lifting it

Answer: 4

Question 3: The absorption of ink by blotting paper involves

viscosity of ink
capillary action phenomenon
diffusion of ink through the blotting
siphon action

Answer: 2

Question 4: Siphon will fail to work if

the densities of the liquid in the two vessels are equal
the level of the liquid in the two vessels are at the same height
both its limbs are of unequal length
the temperature of the liquids in the two vessels are the same

Answer: 2

Question 5: Large transformers, when used for some time, become very hot and are cooled by circulating oil. The heating of the transformer is due to

the heating effect of current alone
hysteresis loss alone
both the heating effect of current and hysteresis loss
intense sunlight at noon

Answer: 3

Question 6: Nuclear sizes are expressed in a unit named

Fermi
angstrom
newton
tesla

Answer: 1

Question 7: Light year is a unit of

time
distance
light
intensity of light

Answer: 2

Question 8: Mirage is due to

unequal heating of different parts of the atmosphere
magnetic disturbances in the atmosphere
depletion of ozone layer in the atmosphere
equal heating of different parts of the atmosphere

Answer: 1

Question 9: Light from the Sun reaches us in nearly

2 minutes
4 minutes
8 minutes
16 minutes

Answer: 3

Question 10: Stars appears to move from east to west because

all stars move from east to west
the earth rotates from west to east
the earth rotates from east to west
the background of the stars moves from west to east

Answer: 2

Question 11: Pa (Pascal) is the unit for

thrust
pressure
frequency
conductivity

Answer: 2

Question 12: Planets do not twinkle because

they emit light of a constant intensity
their distance from the earth does not change with time
they are very far away from the earth resulting in decrease in intensity of light
they are nearer to earth and hence we receive a greater amount of light and, therefore minor variations in the intensity are not noticeable

Answer: 4

Question 13: The nucleus of an atom consists of

electrons and neutrons
electrons and protons
protons and neutrons
All of the above

Answer: 3

Question 14: The number of moles of solute present in 1 kg of a solvent is called its

molality
molarity
normality
formality

Answer: 1

Question 15: The most electronegative element among the following is

sodium
bromine
fluorine
oxygen

Answer: 3

Question 16: The metal used to recover copper from a solution of copper sulphate is

Na
Ag
Hg
Fe

Answer: 4

Question 17: The number of d-electrons in Fe2+ (Z = 26) is not equal to that of

p-electrons in Ne(Z = 10)
s-electrons in Mg(Z = 12)
d-electrons in Fe(Z = 26)
p-electrons in CI(Z = 17)

Answer: 4

Question 18: The metallurgical process in which a metal is obtained in a fused state is called

smelting
roasting
calcinations
froth floatation

Answer: 1

Question 19: The oldest rocks in the earth’s crust were once molten, and came from deep inside the earth. The molten rock, called magma, spewed out in volcanic eruptions during the earth;s early life and solidified into hard rock’s called

granite
basalt
igneous rocks
sedimentary rocks

Answer: 3

Question 20: The law which states that the amount of gas dissolved in a liquid is proportional to its partial pressure is

Dalton’s law
Gay Lussac’s law
Henry’s law
Raoult’s law

Answer: 3

Question 21: Excluding stoppages, the speed of a bus is 54 kmph and including stoppages, it is 45 kmph. For how many minutes does the bus stop per hour?

9
10
12
20

Answer: 2

Question 22: Two trains 140 m and 160 m long run at the speed of 60 km / hr and 40 km / hr respectively in opposite directions on parallel tracks. The time (in seconds) which they take to cross each other, is:

9
6
10
8

Answer: 4

Question 23: Two stations A and B are 110 km apart on a straight line. One train starts from A at 7 a.m. and travels towards B at 20 kmph. Another train starts from B at 8 a.m. and travels towards A at a speed of 25 kmph. At what time will they meet?

9 a.m.
10 a.m.
30 a.m.
11 a.m.

Answer: 2

Question 29: All the following are considered eukaryotes except

archaea
fungi
protozoa
humans

Answer: 1

Question 30: Which of the following organelles contain DNA, divides and possesses some degree of autonomy?

Golgi apparatus
Ribosome
Chloroplast
Peroxisomes

Answer: 3