Skip to content
MCQtimes.com
GK
Pakistan Studies
Current Affairs
Islamic Studies
English
MCQtimes.com
Toggle Menu
Common Observations
Home
/
Everyday Science
/
Common Observations
Show/Hide Answers
Common Observations
When cream is separated from milk, the density of milk:
decreases
increases
remains unchanged
None of these
When cream is separated from milk, the lighter fat portion is removed, leaving behind milk that contains a higher proportion of heavier components like water, proteins, and minerals. Because the lighter part is taken away, the remaining milk becomes denser, so its density increases.
Author:
rikazzz
Comment
Common Observations
A glass chimney stops an oil lamp from smoking because:
It increases the supply of oxygen to the flame by convection
The heat produced ensures complete combustion of carbon particles
Both A and B
None of these
Author:
rikazzz
Comment
Common Observations
A corked bottle full of water when frozen will break because:
Glass is a bad conductor of heat
The bottle contracts on freezing
The volume of water increases on freezing
The volume of water decreases on freezing
Author:
rikazzz
Comment
Common Observations
Small drops of a liquid are spherical in shape because:
The surface energy is minimum for the spherical shape
The surface energy is maximum for the spherical shape
For a given volume, the surface area of a sphere is maximum
None of these
Author:
rikazzz
Comment
Common Observations
The tube light is felt cooler than the light from a bulb of the same wattage because the:
Tungsten is not used in the tube
Tube consume less power
Tube is fixed at greater height than the bulb
Surface area of a tube is larger than that of a bulb
Author:
rikazzz
Comment
Common Observations
An ice cube is floating in a glass of water. How will the water level in the glass be affected when the ice cube melts?
It will rise
It will go down
It will remain unchanged
It would first go up but later on it will go down
Author:
rikazzz
Comment
Common Observations
When a person enters a dark room from bright light, he cannot see anything clearly from some time. Slowly, he starts seeing things. This is because:
The length of lense increase
The iris expands
The iris contracts
The distance between the lens and retina increases
Author:
rikazzz
Comment
Common Observations
A piece of wood is floating in water. If we heat the water, the piece of wood will:
Increase in size
Rise a little
Sink a little
Float at the same level
Author:
rikazzz
Comment
Common Observations
In summer, a cloudy night is hotter than a star lit night because:
Clouds work as a thick blanket and produce heat
Clouds do not allow cold air to reach earth
Clouds prevent the heat radiated by the earth from escaping to the sky
Heat is generated by clouds and radiated back to earth
Author:
rikazzz
Comment
Common Observations
A ship rises as it enters the sea from a river because the:
Water in sea is hard water
Density of seawater is higher than that of the river water
Larger quantity of water in the sea pushes the ship upward
None of these
Author:
rikazzz
Comment
Page navigation
1
2
3
…
5
Next Page
Next
Go to Page
Light
Dark
GK
Pakistan Studies
Current Affairs
Islamic Studies
English