SCIENCE
PHYSICAL SCIENCES
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
|
|
The chairs cannot be the same color.
|
|
|
The chairs cannot be attracted to magnets.
|
|
|
The chairs cannot have the same size or mass.
|
|
|
The chairs cannot be in the same place at the same time.
|
Detailed explanation-1: -Chairs are typically used to provide support for the seated person’s body and arms, although some chairs are designed for ‘perching’ rather than sitting. There are also armless chairs-with or without a back-that may be referred to as stools. Some stools are referred to as backless chairs.
Detailed explanation-2: -Iron has a higher density than wood. So iron conducts heat more efficiently than wood. Now an iron chair will be cold in the winter season if we touch the iron chair in winter, heat flows out from our hand to the iron chair.
Detailed explanation-3: -A chair made of iron appears colder because iron being a good conductor of heat, it looses its heat to the surrounding at night. But the wooden chair remains the same because wood is a bad conductor of heat and so no heat is lost from it.