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At a height of about 30km, the atmospheric pressure becomes only …………..
a) 6mm of Hg                      

b) 7mm of Hg
c) 7m of Hg                         

d) 6m of Hg

b

The atmospheric pressure becomes ……. At an altitude where there is no air.
a) increases                          

b) decreases
c) Remains same                

d) zero

d

In weather maps the lines in the map joining all those places with the same atmospheric pressure are called…………..
a) isochors                                            

b) isothermal
c) adiabars                                           

d) isobars

d

The unit for pressure used in weather maps is the………bar.
a) kilo

b) milli                 

c) mega

d) micro

b

In terms of milli bar 1bar = ……….
a) 1mbar                               

b) 10mbar
c) 100mbar                          

d) 1000mbar

d

In terms of Kilo Pascal 1 bar is nearly equal to
a) 1kPa                                 

b) 10kPa
c) 
100kPa                                            

d) 1000kPa

c