Home > General Knowledge Questions Answers > Physics Questions Answers
Physics Questions Answers
Which one of the following raw materials is used in the manufacture of foam used in mattresses, cushions, etc.?
Methanol
Ethanol
Urea
Phenol
Ethanol
Permanent magnets can be made from —
cobalt
aluminium
zinc
lead
cobalt
Carnot cycle is associated with
Hydrodynamics
Aerodynamics
Thermodynamics
Biological rhythm
Thermodynamics
The developer used for developing a photographic film is, chemically
a reducing agent
an oxidising agent
a neutralising agent
a complexing agent
a reducing agent
Sound travels faster in
dry air than in water
wood than in iron
iron than in air
hydrogen than in water
iron than in air
According to Einstein's theory of relativity, when a body moves with a velocity comparable to the velocity of light, its
mass and length decrease
mass and length increase
length increases but mass decreases
length decreases but mass increases
length increases but mass decreases
The boiling point of water is much higher than other liquids of similar size and molecular weight because
it is polar covalent compound
it is an electrovalent compound
it is a liquid at ordinary temperatures
it shows inter-molecular hydrogen bonding
it is polar covalent compound
Materials used for making cooking utensils should have
low specific heat and high thermal conductivity
high specific heat and high thermal conductivity
low specific heat and low thermal conductivity
high specific heat and low thermal conductivity
low specific heat and high thermal conductivity
Electric current passing through a metallic wire generates heat because of
collisions of conduction electrons with each other
collisions of the atoms of the metal with each other
the energy released in the ionisation of the atoms of the metal
collisions of the conduction electrons with the atoms of the metallic wire
collisions of the conduction electrons with the atoms of the metallic wire
Concave mirrors are used as shaving mirrors because they
do not distort images
always produce real images
produce magnified images
never produce inverted images
produce magnified images