Answer:
B. Dust storm
Explanation:
A meteorologist would predict dust storm most likely. Before dust storm the air condition and air pressure reduces in the particular area which indicate towards a dust storm. As pressure of a region reduces the air of the neighboring area try to maintain that pressure and rush towards low pressure area and causes dust storm.
Answer:
Magnetic flux, 
Explanation:
It is given that,
Magnitude of the magnetic field, B = 0.078 T
Radius of circular loop, r = 0.1 m
The field is oriented at an angle of θ = 25° with respect to the normal to the surface. The magnetic flux through the surface is given by :



or

So, the magnitude of magnetic flux through the surface is
. Hence, this is the required solution.
Answer: Number of nitrogen atoms = 2 Number of oxygen atoms = 6 Therefore, we can conclude that out of the given options, number of nitrogen atoms present in the formula are 2.
Explanation: