Science and Scientific Research - General Knowledge Questions and Answers

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General Knowledge » Science and Scientific Research

The salinity of ocean waters is calculated as the amount of salt (in gm) dissolved in ______ gm of seawater.

A

 10,000

B

 10

C

 100

D

 1000

General Knowledge » Science and Scientific Research

Which of the following animals has more than one heart?

A

 Tortoise

B

 Chameleon

C

 Octopus

D

 Porcupine

General Knowledge » Science and Scientific Research

A typical adult human body contains about ______ of magnesium.

A

25 g

B

20 g

C

10 g

D

15 g

General Knowledge » Science and Scientific Research

Which of the following is commonly referred to as ‘Ozone Hole’?

A

 Biosphere

B

 Stratosphere

C

 Lithosphere

D

 Troposphere

General Knowledge » Science and Scientific Research

Which of the following is correctly paired?

A

Fluoride ion - Cl–

B

Bromide ion - F–

C

Ammonia - OH–

D

Cyanide ion - CN–

General Knowledge » Science and Scientific Research

______ is the measure of relative clarity of a liquid.

A

Reduction

B

 Conductivity

C

Composting

D

Turbidity

General Knowledge » Science and Scientific Research

Ferrum is the Latin name for ______ .

A

copper

B

zinc

C

iron

D

nickel

General Knowledge » Science and Scientific Research

What is the power of ‘second’ in the SI unit of acceleration?

A

 0

B

 +1

C

 –2

D

 –1

General Knowledge » Science and Scientific Research

Which of the following is NOT a water pollutant?

A

Arsenic

B

Silt

C

Chromium

D

Glacier

General Knowledge » Science and Scientific Research

Which of the following is the physical quantity for the expression arc/radius?

A

 Plane angle

B

 Surface tension

C

 Velocity

D

 Linear momentum

General Knowledge » Science and Scientific Research

In the flocculation method of water treatment ______ chemical is added to water.

A

 high negatively charged

B

 electro-neutral

C

 positively charged

D

 low negatively charged

General Knowledge » Science and Scientific Research

What do you call the weight a soil can withstand before severe damage occurs to the structure of the soil?

A

Bulk density

B

Field capacity

C

Bearing capacity

D

Buffering capacity

General Knowledge » Science and Scientific Research

How many electrons are there in the outermost shell of a group 16 element?

A

 4

B

 5

C

 6

D

 3

General Knowledge » Science and Scientific Research

Ozone is a molecule made up of ______ oxygen atoms.

A

 two

B

 four

C

 one

D

 three

General Knowledge » Science and Scientific Research

Which of the following symmetries is exhibited by arthropods?

A

Bilateral

B

Radial

C

Axial

D

Translational

General Knowledge » Science and Scientific Research

Nitrogen is a ______ element.

A

diatomic

B

monoatomic

C

poly-atomic

D

tetra-atomic

General Knowledge » Science and Scientific Research

How many protons are there in a lithium nucleus?

A

 3

B

 4

C

 5

D

 2

General Knowledge » Science and Scientific Research

Who among the following science fiction/ popular science writers wrote ‘2001 : A Space Odyssey’ and held the position of a Professor at the Physical Research Laboratory, Ahmedabad?

A

 Arthur C Clarke

B

 HG Wells

C

 Jules Verne

D

 Isaac Asimov

General Knowledge » Science and Scientific Research

What is the atomic mass of oxygen (expressed in ‘u’)?

A

 16

B

 8

C

 32

D

 24

General Knowledge » Science and Scientific Research

What is the study of the production and propagation of sound waves called?

A

Astrophysics

B

Optics

C

Acoustics

D

Photonics