Elements and Compounds
Elements and Compounds: Overview
This topic covers concepts, such as, Elements and Compounds, Organic Compounds, Acidic Organic Compounds & pH of Organic Compounds etc.
Important Questions on Elements and Compounds
Amorphous aluminosilicate minerals like allophane have ______ negative charge, partly or entirely balanced by complex aluminium cation.
Which chemical is mixed into a colour by which cancer produces in the Human body?
Which of the following filler material can be used for brazing?
Who stated, "Life is a photochemical phenomenon"?
Free energy change () of a reaction is referred to as the amount of energy _____.
At pH ______ H+ ion toxicity is lessened by the removal of these ions.
Onion is used for medicinal value for:
Addition of ammonium sulphate to a herbicidal spray solution enhances the ______ against Agropyron repens:
How many neutrons are there in atom?
Light-driven reactions in the chloroplsts are:
Which of the following is not a organic mercury fungicides?
Almost of Earth's crust is made up of eight elements. Which of the following does NOT figure among these elements?
With reference to atomicity, Argon is _____.
Which of the following is the common name of a natural admixture mineral of zinc carbonate and hydrous zinc silicate?
Which of the following gases is naturally formed via the anaerobic decay of phosphorus-containing organic matter?
What is the chemical symbol of Magnesium?
The horizontal rows in the modern periodic table are called_____.
