12/04/2014

Science Mcqs for Educator


The most important stimulant in tea leaves is
Brucine
Caffeine
Phenylalanine
Theine
Dolly is the name of the
First coined sheep
First coined monkey
First test-tube baby
First human fossil
Which part of the camera is analogue to the retina in the human eye?
Lens
Film
Aperture
Shutter
When a person enters a dark room from bright light he is not able to see clearly for a little while because the
Eye is unable to adjust itself immediately
Retina becomes insensitive momentarily
Iris is unable to dilate the pull immediately
Distance between the lens and retina take
What is the average adult pulse rate?
140-150
115-125
72-80
60
The beautiful color patterns exhibited by a peacock in its tail feathers are due to
Selective absorption of light
Selective reflection of light
Sinterference of light
Natural color pattern of feathers
A lake starts freezing because of the cold atmosphere. It will first freeze
All the bottom
In the middle part
At the top surface
Uniformly throughout the water body
The sun appears red at sunrise and sunset while it appears white at noon, because
Of refraction
It is cooler at sunrise and at sunset
Of diffraction leading to red end of the spectrum reaching the earth
Of scattering of light due to dust particles and air molecules
An astronaut inside a spacecraft is in a state of weightlessness. This implies that
The mass of the astronaut is reduced to zero
Gravity inside the spacecraft ceases to act
The astronaut is outside the influence of the earth’s gravitational force
The astronaut and the spacecraft are both in a free-falling state
An iceberg is floating in sea. How much of its mass will remain above the surface of water?
One tenth
One fifth
One fourth
One third
Most of the ozone In the atmosphere is con-cent rated in the
Mesosphere
Troposphere
Stratosphere
Ionosphere
The cow’s milk contains how much amount of water in terms of percentage?
60%
65%
72%
80%
T.V transmission cannot cover a very large area because
The strength of T.V waves is very limited
Picture cannot be transmitted clearly after a specific distance
The shape of the earth is spherical
The air is not a good conductor of light and sound/waves
The Green House Effect is caused Buy an ex-cess of
Carbon dioxide
Carbon monoxide
Carbon tetrachloride
None of above
Bats can also fly in dark because they are ca-pable of taking the help of
Ultraviolet waves
Ultrasonic waves
Electromagnetic waves
Special Titian
What is stealth Technology?
A device which when attached to an air-craft makes it invisible on the radar
A coating which reduces the visibility of an aircraft on a radar
A technology by which it is possible for the aircrafts to spy in the enemy air-space
A technology by using which paratroopers can be dropped stealthily behind the en-emy columns.
The rear view mirror of a motor vehicle is
Concave
Plane
Convex
Biconcave
Lead ball fall through water more slowly than through air because
The value of ‘g’ is less in water
Density of air is less than that of water
Of the viscous force in water
Of the surface tension of water
A Fahrenheit thermometer indicates a tempera-true of 14 F its corresponding reading on the Celsius scale will be
-20 C
-10 C
+10 C
+20 C

No comments:

Post a Comment

Popular Posts