6054.A device used to measure the amount of moisture in the atmosphere is called a
hydrometer
hygrometer
anemometer
barometer
6055.Why is it difficult to see through fog?
Rays of light suffer total internal reflection from the fog droplets
Rays of light are scattered by the fog droplets
Fog droplets absorb light
The refractive index of fog is extremely High
6056.Which onr the following is the most effective carrier for communications?
Cables
Microwaves
Optical fibres
Radiowaves
6059.Which one of the following planets has largest number of natural satellites or moons?
Jupiter
Mars
Saturn
Venus
6061.The blue colour of the clear sky is due to
Diffraction of light
Dispersion of light
Reflection of light
Refraction of light
6063.Which one of the following is correct?
A concrete wall generally,
A concrete wall generally,
only reflects sound
only absorbs sound
only transmits sound
absorbs and transmits sound
6068.Which one of the following gases is predominant in the atmosphere?
Argon
Nitrogen
Carbon Dioxide
Oxygen
6069.Which of the following uses non-conventional Source of Energy?
Kerosene lamp
Wax candle
Solar lantern
Torch
6072.Which of the following order is given to the plantes of solar system on the basis of their sizes?
Jupiter, Saturn, Earth, Mercury
Saturn, Jupiter, Mercury, Earth
Mercury, Earth, Jupiter, Saturn
Earth, Mercury, Saturn, Jupiter
6075.The angle between the geographical meridian and magnetic meridian is called
Angle of dip
Angle of declination
Angle of inclination
None of the above
6076.In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is
an AND circuit
a NOR circuit
an OR circuit
a high-pass filter
6077.Mist is caused by
Dry ice
Ice at low temperature
Water vapours at low temperature
Carbon- monoxide in solid form
6084.Which colour of heat radiation represents the highest temperature?
Blood red
Dark cherry
Salmon
White
6088.The weight of an object will be minimum when it is placed at
The North Pole
The South Pole
The Equator
The center of the Earth
6090.The time taken by the Sun to revolve around the center of our galaxy is
50 mn years
100 mn years
250 mn years
365 mn years
6100.Given below are the names of four energy crops. Which one of them can be cultivated for ethanol?
Jatropha
Maize
Pongania
Sunflower