When light is passed through a suspension, it’s intensity decreases due to _________
a) Both scattering and diffraction b) Both diffraction and absorption c) Absorption only d) Both scattering and absorption
Environmental Science mcqs
Which of the following scattering phenomena is responsible for the blue colour of the sky?
a) Mie scattering b) Diffraction c) Rayleigh scattering d) All of the mentioned
Particle movement due to photophoresis depends on _________
a) Shape and size of the particle b) Optical properties of the particle c) Wavelength and intensity of incident light d) All of the mentioned
When a given gas has a temperature gradient, the aerosol particles move from higher temperature regions to low temperature regions. This effect is known as __________
a) Photophoresis b) Diffusiophoresis c) Thermophoresis d) Diffusiophoresis or Thermophoresis
What is the statement of the Kelvin effect in fluid droplets?
a) Vapour pressure about a droplet decreases with decrease in diameter of the droplet b) Vapour pressure about a droplet increases with decrease in diameter of the droplet c) Vapour pressure of the droplet is independent of the diameter of the droplet d) Vapour pressure of the droplet varies with the diameter of the droplet … Read more
Formation of aerosols by nucleation produces particles of size __________
a) Less than 0.1 micron b) Greater than 0.1 micron c) Less than 1 micron d) Greater than 1 micron