Important *Science Que* (SSC, Railway) 1

Important Science GK Question For Railway Exam

*The colors in thin films of soap bubbles are seen due to interference of light.

>light reflected from a film of oil floating on water.
>film of a soap bubble, which reflects a spectrum of beautiful colors.

Lenz’s law is based on energy conservation.

Cobalt 60 _used in radiation therapy_ because it emits gamma rays

**Longitudinal waves can’t be polarized.

Refractive index of red light is lesser than the refractive
index for violet light.

Lysosome destroys itself ~suicide vesicle (bag) of the cell.

An instrument used to examine internal parts of the body – Endoscope

>Endoscopy, a technique used for the testing of the internal organs of the body and stomach, is based on the phenomenon of total internal reflection.

A device used to measure atmospheric pressureManometer

An instrument used for measuring Solar radiation is called – Pyrheliometer

Ribosome is called the factory of protein.

*Chlorine was first discovered by Scheele (1774).

Chlorine being an acidic gas turns moist blue litmus paper to red and then bleaches it.

Anemia: deficiency of Mineral Iron.

*Gluten enteropathy ~inability to absorb gluten, a protein found in wheat.

small intestine ~major site for digestion & absorption of nutrients. ~22 feet (6.7 metres) long.

Changing of weather on earth ~ due to it being tilted on its axis at 23.5° and revolution around the sun.

Positron was discovered by Anderson. ~anti-particle of electron

**Atomic reactor ‘Kamini’ in Madras (Chennai)~made completely by the Indian technique.

Various types of colored designs may be seen by a Kaleidoscope.

*Angiosperms are the closed seeded plants. ~most highly developed plants which bear flowers.

*The term ‘Genetics’ was coined by Bateson (1906).

Speed of revolution of Earth round the sun is maximum when Earth is nearest to the sun.

National Science day is celebrated on 28 February, (In the memory of the discovery of Raman effect by C.V. Raman).

*‘Titanium’ is called the metal of future.

*Uranus takes 84 years to complete one revolution round the Sun.

Oxygen was discovered by Joseph Priestley in 1774.

Thermal decomposition of alkanes is called Cracking.

*The chemical element with the lowest melting point is Helium.
and the element with the highest melting point is Carbon
Important *Science Que* (SSC, Railway) 1 Important *Science Que* (SSC, Railway) 1 Reviewed by Admin on July 19, 2019 Rating: 5

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