Everyday science mcqs | GK MCQ Preparation Material

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

Mesosphere

B. Troposphere

Stratosphere

ionosphere

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

One fifth

One fourth

One third

One tenth

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

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

The mass of the astronaut is reduced to zero

Gravity inside the spacecraft ceases to act

The astronaut is outside the influence of the earthâ€™s gravitational force

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

Of Scattering of light due to dust particles and air molecules.

Of diffraction leading to red end of the spectrum reaching the earth.

It is cooler at sunrise and at sunset

Of refraction

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

ln the middle pan

At the top surface

Uniformly throughout the water body

At the bottom

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

selective re ection of light

Natural colour pattern of feathers

Sinterference of light

Selective absorption of light

7- What is the average adult pulse rate?

115-125

140-150

72-80

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

Iris is unable to dilate the pupil immediately

Eye is unable to adjust itself immediately

Retina becomes insensitive momentarily

Distance between the lens and retina take time to adjust

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

Shutter

Lens

Aperture

Film

10- Dolly is the name of the ?

First cloned monkey

First test-tube baby

First human fossil

First cloned sheep

11- The most important stimulant in tea leaves is?

Caffeine

Phenylalanine

Theine

Brucine

12- Dialysis is used for the treatment of__________?

Kidney failure

Brain diseases

None of these

Heart weakness

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