Everyday science mcqs | GK MCQ Preparation Material

1- The cow’s milk contains how much amount of water in terms of percentage?

72%

65%

60%

80%

2- Most of the ozone in the atmosphere is concentrated in the _____________?

Mesosphere

ionosphere

B. Troposphere

Stratosphere

3- An iceberg is floating in sea. How much of its mass will remain above the surface of water?

One fourth

One third

One fifth

One tenth

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

Gravity inside the spacecraft ceases to act

The astronaut and the spacecraft are both in a free-failing state

The mass of the astronaut is reduced to zero

The astronaut is outside the influence of the earth’s gravitational force

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

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.

Of refraction

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

At the top surface

Uniformly throughout the water body

At the bottom

ln the middle pan

7- The beautiful color patterns exhibited by a peacock in its tail feathers are due to ?

Natural colour pattern of feathers

selective re ection of light

Selective absorption of light

Sinterference of light

8- What is the average adult pulse rate?

115-125

140-150

72-80

9- 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

Distance between the lens and retina take time to adjust

Retina becomes insensitive momentarily

Iris is unable to dilate the pupil immediately

10- Which part of the Camera is analogue to the retina in the human eye?

Film

Shutter

Aperture

Lens

11- Dolly is the name of the ?

First cloned monkey

First test-tube baby

First cloned sheep

First human fossil

12- The most important stimulant in tea leaves is?

Theine

Caffeine

Brucine

Phenylalanine

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