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

1 .

Which of the following instruments is used for measuring the depth of the ocean

A)

Fathometer

B)

Barometer

C)

Galvanometer

D)

Ammeter

Correct Answer : Fathometer

2 .

Buoyancy is the _____ force on a floating body

A)

Forward

B)

Upward

C)

Backward

D)

Downward

Correct Answer : Upward

3 .

Nail polish remover contains

A)

Petroleum ether

B)

Acetic acid

C)

Benezene

D)

Acetone

Correct Answer : Acetone

4 .

The spring balance works on the principle of

A)

Boyle's Law

B)

Hooke's Law

C)

Pascal's Law

D)

Bernoulli's principle

Correct Answer : Hooke's Law

5 .

Who of the following has given the term rhizosphere

A)

Garret

B)

Alexopolus

C)

Hiltner

D)

None of the above

Correct Answer : Hiltner

6 .

Soap bubble appears coloured. It is due to

A)

Refraction

B)

Reflection

C)

Scattering

D)

Interference

Correct Answer : Refraction

7 .

Which one is the major component of honey is

A)

Sucrose

B)

Fructose

C)

Glucose

D)

Maltose

Correct Answer : Fructose

By looking at the composition of honey, we can clearly conclude that among all it's constituents, it is fructose which is present in the highest quantity in honey so the main constituent of honey is fructose.

8 .

White colour of milk is due to the presence of

A)

Albumins

B)

Lactose

C)

Carotenes

D)

Caseins

Correct Answer : Caseins

Caseins are one of the main types of protein in milk which cluster together with calcium and phosphate to form tiny particles called micelles. When light hits these casein micelles it causes the light to refract and scatter resulting in milk appearing white.

9 .

Heat from the sun is called

A)

radiation

B)

nuclear fusion

C)

nuclear fission

D)

escavation

Correct Answer : radiation

All of the energy from the Sun that reaches the Earth arrives as solar radiation, part of a large collection of energy called the electromagnetic radiation spectrum. Solar radiation includes visible light, ultraviolet light, infrared, radio waves, X-rays, and gamma rays.

10 .

The design principle that is based on repetition is called

A)

Texture

B)

Color

C)

Rhythm

D)

None of the above

Correct Answer : Rhythm