Second highest layer of Earth’s atmosphere is known as? by A. Stratosphere B. Mesosphere C. Troposphere D. Thermosphere
When the Big Bang explosion was occurred? by A. 10 Billion years ago B. 15 Billion years ago C. 20 Billion years ago D. 25 Billion years ago
The total energy of revolving electron in an atom_____________? by A. Will always be positive B. Can never be positive C. Can have any value above zero D. Cannot be negative
The speed of light with the rise in the temperature of the medium____________? by A. Decrease B. Increase C. Remain the same D. First decrease then increase
Which of the statements to about the Troposphere is not true? by A. It contains 85-90% of the atmosphere’s mass B. It contains nearly all the water and oxygen of the atmosphere C. It is the zone which exhibits changes in condition of weather D. It is about 350 km thick
Bore is caused by______? by A. Rising tide while meeting river currents B. Friction from prevailing winds C. Spring tide and strong winds D. Unequal heating of oceans
The strength of wave action depends on all these EXCEPT: by A. Currents in the sea B. Wind strength C. The depth of coastal water D. Height of waves
Which of the following has the highest energy? by A. Gamma rays B. X-rays C. Ultra-violet radiation D. radio waves
Which of the following has the largest wavelength? by A. visible light B. x-rays C. infrared light D. ultraviolet radiation
