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Home » General Knowledge » Aptitude Test - 52
Hassan
1.Light year is a unit of
A. time
B. distance
C. light
D. time
2.Mirage is due to
A. unequal heating of different parts of the atmosphere
B. magnetic disturbances in the atmosphere
C. depletion of ozone layer in the atmosphere
D. unequal heating of different parts of the atmosphere
3.Light from the Sun reaches us in nearly
A. 2 minutes
B. 4 minutes
C. 8 minutes
D. 2 minutes
4.Stars appears to move from east to west because
A. all stars move from east to west
B. the earth rotates from west to east
C. the earth rotates from east to west
D. all stars move from east to west
5.Pa(Pascal) is the unit for
A. thrust
B. pressure
C. frequency
D. thrust
6.Planets do not twinkle because
A. they emit light of a constant intensity
B. their distance from the earth does not change with time
C. they are very far away from the earth resulting in decrease in intensity of light
D. they emit light of a constant intensity
7.Metals are good conductors of electricity because
A. they contain free electrons
B. the atoms are lightly packed
C. they have high melting point
D. they contain free electrons
8.. Let a thin capillary tube be replaced with another tube of insufficient length then, we find water
A. will overflow
B. will not rise
C. depressed
D. will overflow
9.Out of the following pairs, choose the pair in which the physical quantities do not have identical dimension?
A. Pressure and Young's modules
B. Planck's constant and Angular momentum
C. Impulse and moment of force
D. Pressure and Young's modules
10.If two bodies of different masses, initially at rest, are acted upon by the same force for the same time, then the both bodies acquire the same
A. Velocity
B. momentum
C. acceleration
D. Velocity
11.Pick out the scalar quantity
A. force
B. pressure
C. velocity
D. force
12.Rectifiers are used to convert
A. Direct current to Alternating current
B. Alternating current to Direct current
C. high voltage to low voltage
D. Direct current to Alternating current
13.out of the following, which is not emitted by radioactive substance?
A. Electrons
B. Electromagnetic radiations
C. Alpha particles
D. Electrons
14.out of the following, which is not emitted by radioactive substance?
A. Electrons
B. Electromagnetic radiations
C. Alpha particles
D. Electrons
15.. Sound waves in air are
A. transverse
B. longitudinal
C. electromagnetic
D. transverse
16.. Magnetism at the centre of a bar magnet is
A. minimum
B. maximum
C. zero
D. minimum
17.It is more difficult to walk on a sandy road than on a concrete road because
A. sand is soft and concreter is hard
B. the friction between sand and feet is less than that between concrete and feet
C. the friction between sand and feet is more than that between concrete and feet
D. sand is soft and concreter is hard
18.Find the maximum velocity for the overturn of a car moving on a circular track of radius 100 m. The co-efficient of friction between the road and tyre is 0.2
A. 0.14 m/s
B. 140 m/s
C. 1.4 km/s
D. 0.14 m/s
19.Of the following properties of a wave, the one that is independent of the other is its
A. amplitude
B. velocity
C. wavelength
D. amplitude
20.Lux is the SI unit of
A. intensity of illumination
B. luminous efficiency
C. luminous flux
D. intensity of illumination
21. On a rainy day, small oil films on water show brilliant colours. This is due to
A. dispersion
B. interference
C. diffraction
D. dispersion
22.. Point A is at a lower electrical potential than point B. An electron between them on the line joining them will
A. move towards A
B. move towards B
C. . move at right angles to the line joining A and B
D. move towards A
23. Materials for rain-proof coats and tents owe their water-proof properties to
A. surface tension
B. viscosity
C. specific gravity
D. surface tension
24.RADAR is used for
A. locating submerged submarines
B. receiving a signals in a radio receiver
C. locating geostationary satellites
D. locating submerged submarines
25.Sound of frequency below 20 Hz is called
A. audio sounds
B. infrasonic
C. ultrasonic
D. audio sounds
26.On a clean glass plate a drop of water spreads to form a thin layer whereas a drop of mercury remains almost spherical because
A. mercury is a metal
B. density of mercury is greater than that of water
C. cohesion of mercury is greater than its adhesion with glass
D. mercury is a metal
27.Suitable impurities are added to a semiconductor depending on its use. This is done in order to
A. increase its life
B. enable it to withstand higher voltages
C. increase its electrical conductivity
D. increase its life
28.Stars twinkle because
A. the intensity of light emitted by them changes with time
B. the distance of the stars from the earth changes with time
C. the refractive index of the different layers of the earth's atmosphere changes continuously, consequently the position of the image of a start changes with time
D. the intensity of light emitted by them changes with time
29.It takes much longer to cook food in the hills than in the plains, because
A. in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
B. due to low atmospheric pressure on the hills, the water boils at a temperature higher than 100oC and therefore water takes longer to boi
C. in the hills the atmospheric density is low and therefore a lot of heat is lost to the atmosphere
D. in the hills the atmospheric pressure is lower than that in the plains and therefore water boils at a temperature lower than 100oC causing an increase in cooking time
30.Moment of inertia is
A. vector
B. scalar
C. phasor
D. vector
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