In troposphere, the two types of pollutants are?
Gaseous and particulate pollutants
Carbon and metallic pollutants
Natural and man-made pollutants
Sulphuric and nitrogenous pollutants
Correct answer is A
- The troposphere is the first and lowest layer of the atmosphere of the Earth.
- Gases mix at this layer.
- Weather occurs here
- Region where plants and animals breathe and live
- Tropospheric pollution is caused due to the presence of unwanted gaseous or solid components in the air.
One of the following is not a physical property of monosaccharides?
Monosaccharides get charred when heated
Monosaccharides are water-soluble, sweet substances
They are highly vital to the exploration of metals
They can be reduced to sugar alcohols
Correct answer is C
- Monosaccharides are reducing sugars.
- Pure monosaccharides are water-soluble, white, crystaline solids.
- They taste sweet
- Form a black residue of carbon when dehydrated
The compounds made up of only carbon and hydrogen are called?
Carbon compounds
Hydrocarbons
Atoms
Carbon hydrolysis
Correct answer is B
A hydrocarbon is any of a class of organic chemicals made up of only the elements carbon (C) and hydrogen (H).
Classes are Aliphatic and Aromatic Hydrocarbons.
Natural sources are coal, natural gas and petroleum.
The process or act of extracting a metal from its ore and refining it is called?
Extraction
Metal mining
Mettallurgy
Prospecting
Correct answer is C
Metallurgy, art and science of extracting metals from their ores and modifying the metals for use.
A binary compound of oxygen with another element is referred to as?
Oxide
Element
Carbon
Nitrogen
Correct answer is A
An oxide is a chemical compound that contains at least one oxygen atom and one other element in its chemical formula.