EDS MCQs for JEST & PST
1. Which of the following has highest frequency?
a. Gamma rays
b. Microwaves
c. Light waves
d. Radio waves
2. If u use a microscope to watch
smoke particles in still air, u ll see them moving about all the time. This
phenomenon is called ?
a. Brownian
movement
b. Osmosis
c. Tyndall effect
d. Diffusion
3. Geiger counter is an instrument
a. Determine the heart beat rate
b. To detect
radioative radiation
c. To measure intensity of visible light
d. To count the baggage of an airport
4. The heat recieved by earth from
the sun is known as
a. Insulation
b. Solar heat
c. Solar
radiation
d. Thermal radiation`s
5. When as the satellite is in thhe geostationary orbit , its
a. Orbital distance
is equal to the radius of the earth
b. Acceleration is zero
c. Orbital period is about 24 hours
d. Angular velocity is zero
6. The mass of a neutron is approximately
a. Equal to the
mass of proton
b. Three times the mass of a proton
3. Twice the mass of a proton
4. Zero
7. The spherical shape of rain drops is due to
a. Atmospheric friction of
air
b. Gravity of spherical earth
c. Surface tension of rain water
d. Viscosity of rain water
8. Galvanometer is an instrument
a. For measuring volume change in chemical reactions btw gases
b. For
measuring currents of small magnitude
c. Which prints automatically messages sent from one place to another
d. For recording high temperature from a distance
9. The film of oil and soapy water
owe their brilliant colours to a combination of light reflection and
a. Refraction
b. Polarization
c. Diffraction
d. Interference
10. If an iron is marked 750 watts by 250 volts, then it was designated
to take a current of
a. 3 Amperes
b. 9 Amperes
c. 6 Amperes
d. 15 Amperes
11. The blue colour of the sky is due to
a. Polarization of light
b. Scattering of
light
c. Reflection of light
d. None of these
12. When we are looking at a rainbow in front of us, The sun must be
a. high in the
sky and is located either on our rigght or left
b. In front of us
c. Behind us
d.middle
13. To an astronaut in space sky looks
a. Deep blue
b. White
c. Black
d. Orange red
14. Why does the sun looks oval when it is at the horizon ?
a. When the
sun is at the horizon rays from the longer edge are refracted more coz it
passes through greater thickness
of air so vertical diameter is shortened to give an oval shape
b. When at the horizon sun is pulled by other planets and becomes elongated
c. While setting or rising sun is elliptical
d. None of these
15. The moon has period of rotation which is equal to period of
revolution . It is
a. 29 days, 7
hours , 43 min , 1147 sec
b. 20 days, 6 hours , 50 min , 20 sec
c. 31 days, 8 hours , 42 min , 10 sec
d. None of these
16. The composition of the sun is
a. hydrogen
90% , Helium 8% , Heavy elements 2%
b. hydrogen 95% , Helium 3% , Heavy elements 2%
c. hydrogen 80% , Helium 10% , Heavy elements 10%
d. None of above
17. The most intense man-made light souce is
a. Master
b Laser
c. Mercury Vapour Lamp
d. Light emitting diode (LED)
18. How many calories will b needed to raise the temperature of 10 grams
of water from 200 to 3000?
a. 1
b. 10
c. 100
d. 200
19. The branch of biological science " Ecology " deals with the
study of
a. Plants in relation to their environment
b. Animals in
relation to plants
c. All living things in relation to their environment
d. Animals in relation to their environment
20. The solar ultraviolet rays fo not harm living organism because
a. The ozone
layer of the atmosphere weakens them
b. They are weak rays
c. They have to pass through a thich column of the atmosphere
d. The atmospheric nitrogen dilutes them
21. Most important effect of moon on earth is that
a. Gives light
b. Causes earthquake
c. Causes solar & lunar eclipse
d. Effects tides
of ocean
22. The term " Meteor" is applied to an interplanetary body,
a. Before it enter the earth`s atmosphere
b. After it
enters the earth`s atmosphere
c. After it centers the earth`s atmosphere
d. After it centers the earth`s atmosphere and lands on the surface of the
earth without exploding in mid air
23. Newton`s rings are
a. Celestial body named by newton
b. Rings presented to newton by a king
c. An optical phenomenon
d. Coloured
rings observed around the point of contact of a convex lense
24. Constellation is
a. Configuration
of fixed stars resembling a figure
b. Group of satellites
c. Group of comets
d. None of above
25. Which of the following part of the atmosphere is nearest to the earth
a. Troposphere
b Stratosphere
c. Lonosphere
d. Mesosphere
