Latest Science and Technology General Knowledge(GK) Questions and answers

1 .

The primary colors are

A)

Yellow, Red, Blue

B)

Red, Green, Blue

C)

Green, White, Black

D)

Blue, Green, Yellow

Correct Answer : Red, Green, Blue

The Primary Colours are Red, Green, Blue. By mixing all these three primary colours we get White colour.

2 .

What is the first step in Photosynthesis?

A)

Ionization of water

B)

Formation of ATP

C)

Joining of 3-carbon atom to form glucose

D)

Excitement of an electron of chlorophyll photon of light

Correct Answer : Excitement of an electron of chlorophyll photon of light

The first step in Photosynthesis is Excitement of an electron of chlorophyll photon of light.

3 .

Elastomers can extend upto

A)

Two times their original dimensions

B)

three times their original dimensions

C)

five times their original dimensions

D)

seven times their original dimensions

Correct Answer : seven times their original dimensions

An elastomer is a polymer with viscoelasticity which have low youngs modulus with weak intermolecular forces when compared with other materials.

4 .

What is the science of mapmaking called?

A)

Cartography

B)

Coriography

C)

Mapping

D)

Photograrnmetry

Correct Answer : Cartography

The study and practice of map making is called Cartography. It can further be explained as the art and science of making map. It includes analysing the history of maps along with printing, distribution and sales. It also includes collecting,conserving and curation of them in libraries.

The various maps apart from road and topographics includes military,geological, statistical,tourist,travel,climate and weather maps etc. A perfect cartography plays an important role , as a well drawn map can help in communication than a terribly designed one. Each map has it`s own quality.

5 .

What is the study of Moon called?

A)

Cosmology

B)

Iridology

C)

Selenology

D)

Planetology

Correct Answer : Selenology

Selenography is the study of the surface and physical features of the Moon. ... Today, selenography is considered to be a subdiscipline of selenology, which itself is most often referred to as simply "lunar science."

6 .

What is one map unit equivalent to

A)

the distance between a pair of homologous chromosomes

B)

1% recombination frequency

C)

Both (a) & (b)

D)

1 nanometer of distance between two genes

Correct Answer : 1% recombination frequency

The distance between two genes is measured with a unit called map unit. One map unit is equivalent to 1% recombination frequency.

7 .

______constitute the biotic component of the biosphere.

A)

Living things

B)

Atmosphere

C)

Minerals

D)

Non-living and Living things

Correct Answer : Living things

8 .

Access to potable water is most heavily limited by

A)

Raw water supplies

B)

Precipitation

C)

Climate

D)

Money

Correct Answer : Money

Around the world the most significant restriction on access to potable water is money. While access to raw water sources, clean or otherwise, is important, the purification process itself is expensive. Once water has been rendered potable, it is important that it be delivered without reintroducing contamination.

9 .

Which part of the brain is responsible for memory?

A)

Cerebellum

B)

Cerebrum

C)

Medulla Oblongata

D)

All of the above

Correct Answer : Cerebellum

10 .

The chief constituent of gobar gas is

A)

Hydrogen

B)

Methane

C)

Ethane

D)

Carbon Dioxide

Correct Answer : Methane

Biogas is primarily made up of methane and carbon dioxide with a small amount of hydrogen sulphide, siloxanes and moisture. Methane (CH4) constitutes 50-75 percentage of biogas, while carbon dioxide takes up 25-50 percentage, so we can say that methane is the major constituent of biogas.