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Q. What is chlorofluorocarbon?
A chemical is some substance that has a definite composition. Ozone is a chemical which is made up of three particles of oxygen. Ozone forms a thick blanket on top of the clouds in the stratosphere. This layer of ozone protects Earth as of overexposure to ultraviolet radiation from the Sun. You are most likely familiar with the damage that exposure to ultraviolet radiation can do to your skin in the form of sunburn. Ultraviolet radiation can as well harm other animals and plants. In the 1980s scientists recognized that the ozone layer around Earth was becoming measurably thinner in some spots. In the 1970s scientists had experiential that large quantities of chlorofluorocarbons (CFCs) had accumulated in Earth's atmosphere.
CFCs are chemicals which contain fluorine, chlorine and carbon. CFCs were utilized as coolants in refrigerators and air conditioners and as propellants in spray cans because they were considered relatively nonreactive. A few scientists hypothesized that there might be a connection between the concentration of CFCs in the atmosphere and the thinning of the ozone layer.
Number of unpaired electrons in the ground state of beryllium atom is: (1) 2 (2) 1 (3) 0 (4) All the above Ans: 0
Post-harvest treatments Certain post-harvest treatments to fruits and vegetables can bring down spoilage significantly. A wide range of chemicals used to control post-harvest d
Chemical Kinetics of the Peroxodisulfate Ion The peroxodisulfate ion is one of the strongest oxidants that are called, although the oxidation reaction is relatively slow.
In any atom which sub-shell will have the highest energy in the following : (1) 3p (2) 3d (3) 4s (4) 3s Ans: 3d
Plz tell me the units of absorptivity if it has any units
what is the empirical formula of a compound that contains 53.73% iron and 46.27% sulphur?
I have a question on hydrophobicity. I have a product called Neverwet that creates a hydrophobic surface on stuff. There''s a base and top spray. The top spray thats mainly acetone
what/s this test
what is the chemistry behind the reactions of confirmatory test of sulphide radical of dilute acid group.
The uncertainty principle and the concept of wave nature of matter was proposed by ...... and ...... respectively: (1) Heisenberg, de Broglie (2) de-Broglie, Heisenberg
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