The earth's nearest neighbour in space is
the Sun
the Moon
the Venus
the Mars
Correct Answer :
B. the Moon
Related Questions
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
We always see only one side of the moon because
the sun comes in between the earth and moon
the moon is stationary
the time taken by the moon to rotate on its axis is the same as the time taken by it to revolve round the earth
moon revolves round the sun
The largest planet in the solar system is
Neptune
Uranus
Jupiter
Saturn
When water is cooled from 4�C to 2�C its density
increases
decreases
remains the same
first increases then decreases
The inside of both the walls of a thermos flask is silvered i.e., on the vacuum side in order to reduce heat loss by
convection
radiation
conduction
All the three
The device for tracking and locating the position of a moving object in space is called
Space ship
Lunar module
Radar
Rocket
When a satellite la In a geostationary orbit the force keeping it in orbit Is
zero
the centrifugal force
reaction due to steady burning of fuel
the gravitational pull on the body by the earth is the weight of the body which provides the centripetal force
Chronometer la an instrument to measure
heat
electric potential
time
distance between two points
Which of the following wires of same dimensions offers least resistance to the ,flow of current?
copper
aluminium
silver
nichrome
A piece of ice is Boating In water kept in a beaker. When all the ice melts the level of water will
first rise and then fall
fall
remain the same
rise
When light passes from air to glass, its velocity in glass
increases
decreases
remains unchanged
first decreases then increases
The frequency of an ultrasonic wave is
the same as that of an audible sound
above the audible range
below the audible range
None of the above
Which of the following has the highest refractive index?
Crown glass
Water
Flint glass
Diamond
The SI unit of electric current is
the ampere
the volt
the ohm
the coulomb
Rain drops acquire spherical shape due to
viscosity
surface tension
friction
elasticity
The planet that moves fastest around the sun is
Mars
Venus
Earth
Mercury
Gamma radiations are used for
sterilising food stuff
controlling pests
cancer therapy
All of these
The Milky Way is
the path of a star which is nearest to the earth
a galaxy which includes the sun
a star that is nearest to the earth
None of these
Skating on ice is possible because
the surface of ice is smooth
ice is cold
the pressure on the ice due to skate melts the ice by lowering its melting point forming a thin film of water
the pressure on the ice due to skate raises its melting point
Choose the scalar quantity from the following physical quantities
force
velocity
acceleration
speed
Less dew is formed on cloudy nights because
there is no moisture in the atmosphere
clouds absorb the falling dew
objects emit radiant energy very fast on such nights
objects lose less radiant energy
Which is the densest planet of the solar system?
Sun
Jupiter
Mercury
Earth
The characteristics of a musical note are
loudness
pitch
quality or timbre
All the above
In the nucleus of an atom, the uncharged particle is
proton
neutron
electron
positron
Which of the following rays has the highest penetrative power?
�± -rays
�² -rays
�³ -rays
X-rays
What la the minimum velocity required for a rocket to overcome earth's gravity and travel into space?
18 km/sec
11.2 km/ sec
21 km/ sec
35 km/ sec
Which of the following is known as freon?
Liquid ammonia
Carbon tetrafluoride
Dichloro-difluoro-methane
Sulphur dioxide
While crossing a suspension bridge, the soldiers are ordered to break steps because
the marching in steps will involve a big strain on them
the resonant vibrations caused by their marching can damage the bridge increasing the amplitude to dangerous proportions
the marching may obstruct other traffic
rumblings of their marching may disturb the surroundings
When a body is partly or wholly immersed in a liquid the apparent loss of weight is equal to the weight of the liquid displaced by the submerged portion. This is known as
Pascal's law
Bernoulli's law
Archimedes' law
Boyle's law
Which of the following pairs is not correct?
Television - Baird
Transistor ~ Shockley
Thermometer - Celsius
Barometer Torricelli