Science and Technology - General Knowledge Questions

1 .

A fresh egg when placed in salt water will

float

burst

sink and go to the bottom

sink but will not go to the bottom

Correct Answer : float

2 .

Living things constitute the biotic component of the_____

thermosphere

heliosphere

biosphere

mesosphere

Correct Answer : biosphere

3 .

Chlorophyll was first isolated and named by

Caventou

Pelletier

Chlorophyll

Caventou and Pelletier

Correct Answer : Caventou and Pelletier

Chlorophyll was first isolated and named by Joseph Bienaimé Caventou and Pierre Joseph Pelletier in 1817.

4 .

Mangifera indica is the scientific name of

Guava

Mango

Jack fruit

Amla

Correct Answer : Mango

Mangifera indica (MI), also known as mango, aam, it has been an important herb in the Ayurvedic and indigenous medical systems for over 4000 years.

5 .

A ________________ is known by different names in different parts of the world. It is called a ‘hurricane’ in North America.

whirlpool

twister

cyclone

funnel

Correct Answer : cyclone

A cyclone can be defined as a low atmospheric pressure area around which a large scale air mass rotates. The cyclone has different names in different parts of the world.

6 .

Which of the following is the uppermost layer of the atmosphere?

Exosphere

Ionosphere

Mesosphere

Stratosphere

Correct Answer : Exosphere

Exosphere. Although some experts consider the thermosphere to be the uppermost layer of our atmosphere, others consider the exosphere to be the actual "final frontier" of Earth's gaseous envelope.

7 .

When warm air rises up and cold air from the surrounding areas rushes in to fill its place then this sets up ________________ in air.

conduction

convection

agitation

radiation

Correct Answer : convection

When warm air rises up and cold air from the surrounding areas rushes in to fill its place then this sets up convection in air.

* When warm air rises, the air pressure at that place gets lowered. The cold air from the surrounding areas rushes in to fill its place. This sets up convection currents in the air.

* Wind currents are generated due to uneven heating on the earth.

* Convection is the process by which the transmission of heat takes place through a substance from one point to another due to actual bodily movement of heated particles of the substance.

8 .

The study of Cells is also known as

Cellology

Nucleology

Physiology

Cytology

Correct Answer : Cytology

9 .

Silk worms feed on

Mulberry leaves

Basil leaves

Curry leaves

Rose leaves

Correct Answer : Mulberry leaves

Domesticated silkworms are the foundation of sericulture. Silkworms predominately feeds on mulberry leaves.

10 .

'Ooceraea joshii', is an Ant species recently discovered in which state?

Telangana

Andhra Pradesh

Kerala

Karnataka

Correct Answer : Kerala

New Ant Species "Ooceraea Joshii" Discovered in Kerala, Named After JNCASR Biologist. Two new species of a rare ant genus have been discovered in India. The species of the ant genus Ooceraea found in Kerala, and Tamil Nadu add to the diversity of this rare genus.