Everyday Science Test 1

Total Questions: 25

1 - The most important stimulant in tea leaves is

A ) Brucine
B ) Caffeine ✅
C ) Phenylalanine
D ) Theine

2 - Dolly is the name of the

A ) First cloned sheep ✅
B ) First cloned monkey
C ) First test-tube baby
D ) First human fossil

4 - When a person enters a dark room from bright light he is not able to see clearly for a little while because the

A ) Eye is unable to adjust itself immediately
B ) Retina becomes insensitive momentarily
C ) Iris is unable to dilate the pupil immediately ✅
D ) Distance between the lens and retina take time to adjust

5 - What is the average adult pulse rate?

A ) 140-150
B ) 115-125
C ) 72-80 ✅
D ) 60

6 - The beautiful colour patterns exhibited by a peacock in its tail feathers are due to

A ) Selective absorption of light ✅
B ) Selective reflection of light
C ) Sinterference of light
D ) Natural colour pattern of feathers

7 - A lake starts freezing because of the cold atmosphere. It will first freeze

A ) At the bottom
B ) In the middle part
C ) At the top surface ✅
D ) Uniformly throughout the water body

8 - The sun appears red at sunrise and sunset while it appears white at noon, because

A ) Of refrection
B ) It is cooler at sunrise and at sunset
C ) Of diffraction leading to red end of the spectrum reaching the earth
D ) Of scattering of light due to dust particles and air molecules ✅

9 - An astronaut inside a spacecraft is in a state of weightlessness. This implies that

A ) The mass of the astronaut is reduced to zero
B ) Gravity inside the spacecraft ceases to act
C ) The astronaut is outside the influence of the earth's gravitational force
D ) The astronaut and the spacecraft are both in a free-falling state ✅

11 - Most of the ozone in the atmosphere is concentrated in the

A ) Mesosphere
B ) Troposphere
C ) Stratosphere ✅
D ) Ionosphere

13 - T. V. transmission cannot cover a very large area because

A ) The strength of T.V. waves is very limited
B ) Picture cannot be transmitted clearly after a specific distance
C ) The shape of the earth is spherical ✅
D ) The air is not a good conductor of light and sound/waves

14 - The Green House Effect is caused by an excess of

A ) Carbon dioxide ✅
B ) Carbon monoxide
C ) Carbon tetrachloride
D ) None of these

15 - Bats can also fly in dark because they are capable of taking the help of

A ) Ultraviolet Waves
B ) Ultrasonic Waves ✅
C ) Electromagnetic Waves
D ) Special Retina

16 - What is 'Stealth Technology '?

A ) A device which when attached to an aircraft makes it invisible on the radar
B ) A coating which reduces the visibility of an aircraft on a radar ✅
C ) A technology by which it is possible for the aircrafts to spy in the enemy air-space
D ) A technology by using which paratroopers can be dropped stealthily behind the enemy columns

17 - The primary function of the feathers in birds is to

A ) Provide insulation for preserving body heat
B ) Provide striking surface to the wings for flying ✅
C ) Make the body surface waterproof
D ) Impart colouration for species as well as sex recognition

18 - The rear view mirror of a motor vehicle is

A ) Concave
B ) Plane
C ) Convex ✅
D ) Biconcave

19 - Lead ball falls through water more slowly than through air because

A ) The value of 'g' is less in water
B ) Density of air is less than that of water
C ) Of the viscous force in water ✅
D ) Of the surface tension of water

21 - Which one of the following sets of colour combinations is added in colour vision in TV?

A ) Red, green and blue ✅
B ) Orange,black and violent
C ) White,red and yellow
D ) Yellow, green and blue

22 - A train goes past a railway station at a high speed. A young boy standing on the edge of the platform is likely to

A ) Remain unaffected
B ) Fall away from the train
C ) Fall towards the train ✅
D ) Fall away from or towards the train depending upon the speed

23 - Water is a highly effective coolant for a car engine because

A ) Water is good conductor of heat
B ) Water has very high specific heat capacity
C ) Water boils at a comparatively high temperature ✅
D ) Evaporation of water produces lot of cooling

24 - Scalding with steam is more severe than scalding by boiling water because

A ) Steam can penetrate the skin
B ) Steam is at a higher temperature
C ) Steam contains more energy than boiling water ✅
D ) Steam is at a higher pressure