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

1 .

Who coined the term "Ecology"?

A)

Ernst Haeckel

B)

Hugo de Vries

C)

Robert Brown

D)

G. Evelyn Hutchinson

Correct Answer : Ernst Haeckel

The term “ecology” was coined by the German zoologist, Ernst Haeckel, in 1866 to describe the “economies” of living forms.

2 .

The wilting of plants takes place due to

A)

Respiration

B)

Transpiration

C)

Absorption

D)

Photosynthesis

Correct Answer : Transpiration

3 .

What is Syzygy?

A)

Earth's position between Sun and Moon

B)

Sun and Moon position on one side of the Earth

C)

The right angle position of Moon from the Sun and Earth

D)

Position of sun, earth and moon in the straight line

Correct Answer : Position of sun, earth and moon in the straight line

4 .

The study of mountains is known as

A)

Lithology

B)

Oncology

C)

Orology

D)

Ornithology

Correct Answer : Orology

Mountain research or montology, traditionally also known as orology (from Greek oros á½„ρος for 'mountain' and logos λÏŒγος), is a field of research that regionally concentrates on the Earth's surface's part covered by mountain landscapes.

5 .

Elapidae Naja is the scientific name of

A)

Elephant

B)

Cobra

C)

Owl

D)

Eagle

Correct Answer : Cobra

Type species. Coluber naja. Linnaeus, 1758. Naja is a genus of venomous elapid snakes known as cobras ("true cobras"). Members of the genus Naja are the most widespread and the most widely recognized as "true" cobras.

6 .

Which of the following metal (shown by its symbol) is generally used for making filaments of bulb?

A)

W

B)

Ag

C)

An

D)

Fe

Correct Answer : W

7 .

What is the value of the Least Distance of Distinct vision (in cm) for a normal human being?

A)

25

B)

40

C)

58

D)

80

Correct Answer : 25

8 .

Which one of the following statements with regard to volcanoes is not correct?

A)

Hawaiian shield volcanoes are eroded by steams that form deeply carved valleys with steeply sloping heads.

B)

The surrounding areas can remain highlands, lava ridges or mesas.

C)

Stratovolcanoes produce lava flows that initially follow valleys but are highly resistant to erosion.

D)

The system of streams on a dissected volcano cone is not a radial drainage pattern.

Correct Answer : The system of streams on a dissected volcano cone is not a radial drainage pattern.

Stratovolcano, also known as acomposite volcano, is aconical volcanobuilt up by many layers (strata) of hardened lava, tephra, pumice and ash. Because it is stratified, therefore it will definitely form a volcano cone.

9 .

A solar cell is made up of

A)

Teflon

B)

Carbon

C)

Silicon

D)

Gallium

Correct Answer : Silicon

Crystalline silicon cells are made of silicon atoms connected to one another to form a crystal lattice. This lattice provides an organized structure that makes conversion of light into electricity more efficient.

10 .

What is the name of the second layer of the Earth's three concentric layers?

A)

SIAL

B)

SIMA

C)

NIFE

D)

None of the above

Correct Answer : SIMA

SIMA, also known as 'mantle' is the second layer of the Earth's three concentric layers, others two being SIAL (crust) and NIFE (core).