In very cold countries alcohol is used as a thermometric liquid because
alcohol is a poor conductor of heat
alcohol can be coloured for its level to be seen easily
its freezing point is very low
it will not stick to the glass tube
Correct Answer :
C. its freezing point is very low
Related Questions
The largest reserve of radioactive element which can be used in a nuclear reactor has been found in India, The name of the element is
Thorium
Uranium
Plutonium
Radium
When white light passes through a glass prism we get a spectrum on the other side of the prism. In the emergent beam the ray which is deviated least is
the violet ray
the red ray
the green ray
the blue ray
The earth's nearest neighbour in space is
the Sun
the Moon
the Venus
the Mars
Mercury is used in a barometer because
its density being very high 13.6 g/cm3 the height of mercury column is conveniently small
at the ordinary temperature its vapour pressure is small
it is opaque and does not wet glass
All the above
The radius of an atom is approximately
10-10 cm
10-12 cm
10-13 cm
10-16 cm
Heat transfer
cools the body that transfers it
heats the body that absorbs the heat
may change the physical state of the substance
All the above
When water is cooled from 4�C to 2�C its density
increases
decreases
remains the same
first increases then decreases
Which is the densest planet of the solar system?
Sun
Jupiter
Mercury
Earth
When a ship floats on water, the weight or water displaced is
an indeterminate quantity
equal to the weight of the ship
greater than the weight of the ship
less than the weight of the ship
When a bowler spins a ball, it changes its direction in the air. This is due to
turbulence caused by the wind
buoyancy of air
unequal pressures acting on it
sudden change in the direction of the wind
Thick brick walls are used in the construction or a cold storage because bricks
are good conductors of heat
are cheaper
are easily obtained
are bad conductors of heat
The radius of curvature of a spherical mirror is
equal to half its focal length
equal to its focal length
twice its focal length
not related to its focal length
The evaporation rate depends on
the nature of the liquid
area of the exposed surface of the liquid
temperature of air and of the liquid
All the above
Which metal is used in storage batteries?
Copper
Lead
Tin
Iron
A pair of stars that revolve round each other is
a neutron star
a binary star
a dwarf star
a polar star
The star nearest to the sun is
Proxima Centauri
Sirius
Aldebaran
Vega
When an electric bulb breaks, there la an explosive sound. That is due to
the chemical reaction between the gases inside the bulb
the compressed gases inside rushing out suddenly
the air outside rushing in to fill the vacuum inside the bulb
None of the above
When the resistance of a circuit increases the current will
increase
decrease
remain the same
None of the above
When a swing is drawn to a side Its potential energy In relation to the earth
increases
decreases
remains the same
is constant
The electroplating of a metallic article
protects the article from atmospheric corrosion
gives it a more attractive appearance
Both (a) and (b) above
None of the above
Powder clings to the skin because of
cohesion
adhesion
capillary action
absorption
The world's first artificial satellite Sputnik I was launched by Russia in
1985
1957
1959
1960
The unit of heat energy is
watt
degree
joule
erg
The motion .of the pendulum of a wall clock is an example of
linear motion
vibratory motion
rotational motion
None of the above
At temperature near OK, (zero kelvin) metals such as lead and tin become
insulators
semiconductors
superconductors
condenser
Changing of one element into another element is known as
transmutation
fission
fusion
radioactivity
Fish and other aquatic creatures can live inside a deep frozen pond because
fish are cold-blooded animals
ice is a bad conductor of heat
there will always be water just beneath the ice level
they can adapt themselves to live in ice
Antiparticle of electron is
proton
antiproton
positron
neutron
A device used in a ship for the purpose of measuring the depth of the sea is
an altimeter
a fathometer
a hydrometer
a sonometer
The hygrometer is an apparatus used for finding the
temperature of air
intensity of light
density of a liquid
relative humidity of the atmosphere