Lignite, bituminous & anthracite are different rank of _________ ?
Lignite, bituminous & anthracite are different rank of _________ ?
A. Iron
B. Coal
C. Wood
D. None of these
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Mercury is the closest planet to the Sun, but Venus is hotter than Mercury because of its_________?
Mercury is the closest planet to the Sun, but Venus is hotter than Mercury because of its_________?A. Pressure
B. axis
C. atmosphere
D. surfaceWhich of the following plants are called arthrophytes?
Which of the following plants are called arthrophytes?A. Sphenopsids
B. Lycopsids
C. Psilopsids
D. PteropsidsCarrot is good source of Vitamin _______?
Carrot is good source of Vitamin _______?A. Vitamin A
B. Vitamin B
C. Vitamin C
D. Vitamin DThe earth’s atmosphere is divided into layers based on the vertical profile of __________?
The earth’s atmosphere is divided into layers based on the vertical profile of __________?
A. Air pressure
B. Air temperature
C. Air density
D. Wind speedSound waves are _________ waves.
Sound waves are _________ waves.A. Transverse
B. Electromagnetic
C. Longitudinal
D. None of theseDetergents dissolved in water help in cleaning clothes by_________?
Detergents dissolved in water help in cleaning clothes by_________?A. Increasing the temperature of water
B. Reacting chemically with dirt
C. Reducing the surface tension of water
D. Dissolving dirt