OTS Water & Sanitation Dept (WSSP / PHED): Everyday Science MCQs with Answers

Question 1

Gerontology is the study of:

Accepted Answer

The process of aging

Answer

The growth of cells

Answer

Birds

Answer

Vegetables

Question 2

Domestic electrical wiring is basically a ______.

Accepted Answer

parallel connection

Answer

series connection

Answer

combination of series and parallel connections

Answer

series connection within each room and parallel connection elsewhere

Question 3

Soap and detergents remove the dirt from clothes due to:

Accepted Answer

Interfacial tension

Answer

Osmosis

Answer

Capillary action

Answer

Diffusion

Question 4

The disease elephantiasis is caused by the:

Accepted Answer

Culex mosquito

Answer

Housefly

Answer

Anopheles mosquito

Answer

Lack of vitamin B

Question 5

What is the name of Pakistan's space agency?

Accepted Answer

SUPARCO

Answer

NASDA

Answer

PAKSA

Answer

ISPA

Question 6

Amnesia is related to ______.

Accepted Answer

loss of memory

Answer

loss of hearing

Answer

loss of sight

Answer

sleeping sickness

Question 7

Sulfuric acid (H₂SO₄) is classified as:

Accepted Answer

A strong acid

Answer

A weak acid

Answer

A neutral substance

Answer

A strong base

Question 8

Which sub-atomic particle has approximately the same mass as a proton but carries no electric charge?

Accepted Answer

Neutron

Answer

Electron

Answer

Positron

Answer

Photon

Question 9

All weather is mainly caused by:

Accepted Answer

Heating from the Sun

Answer

Movement of the Earth

Answer

Moon light

Answer

Ocean waves

Question 10

The characteristic odour of garlic is due to:

Accepted Answer

A sulphur compound

Answer

A chloro compound

Answer

A fluorine compound

Answer

Acetic acid

Question 11

The conversion of kinetic energy to potential energy is best illustrated by:

Accepted Answer

A ball thrown upward slowing down as it rises

Answer

A battery powering a bulb

Answer

Water being heated on a stove

Answer

A generator producing electricity

Question 12

Which of the following statements describes Newton’s Third Law of Motion?

Accepted Answer

For every action, there is an equal and opposite reaction.

Answer

The volume of a given mass of gas increases or decreases with temperature.

Answer

At a constant temperature, the volume of a given mass of gas varies inversely with pressure.

Answer

There is an attraction or repulsion between two electric charges.

Question 13

Which one of the following is a non-metallic mineral?

Accepted Answer

Gypsum

Answer

Manganese

Answer

Magnesium

Answer

Bauxite

Question 14

Among the planets of the Solar System, the position of the Earth from the Sun is:

Accepted Answer

Third

Answer

Second

Answer

Fourth

Answer

Sixth

Question 15

Laughing gas is called:

Accepted Answer

Nitrous oxide

Answer

Nitric oxide

Answer

Ammonium oxide

Answer

Hydrogen peroxide