Question
The phenomenon of light associated with the appearance
of blue colour of the sky is –Solution
During daylight, the sky appears to be blue because air scatters blue sunlight more than it scatters red. At night, the sky appears to be a mostly dark surface or region scattered with stars. Except for light that comes directly from the sun, most of the light in the day sky is a result of scattering, which is dominated by a small- particle limit called Rayleigh scattering.
Addition of ethylene dibromide to petrol
What is the process of changing a substance directly from solid to gas called ?
A nucleus X of mass number 238 undergoes 3 α-decays and 2 β⁻-decays successively. The mass number and atomic number of the resulting nucleus Y are:...
A fluid flows through a horizontal pipe. The pressure drops by 2000 Pa and speed increases from 2 m/s to 4 m/s. Find density.
What is the smallest unit of the kidney called?
Which period and group in the long form of periodic table contain maximum number of elements?
Galvanisation is the process of depositing a layer of ________ on iron.
You will see that the atomic radius decreases in moving from left to right along a period in the Periodic Table. The reason for this is-
Which planet is known as the Red Planet?
Which muscle type is involuntary and found in internal organs?
