The substance least considered as a source of environment...
The substance least considered as a source of environmental pollution is
Lead compounds
Organophosphorous compounds
Silicate minerals
Uranium
Correct answer is C
No explanation has been provided for this answer.
The following statements about graphite are correct except that it...
C2H5OH(aq) → Y If the above reaction takes place in conc. H2SO4 at 180o, Y represents...
The type of chemical bond that exists between potassium and oxygen in potassium oxide is ...
On exposure to hydrogen sulphide, moist lead (II) ethanoate paper turns ...
What is the chemical symbol for Helium? ...
Which of the following elements has its valence electrons in the s-orbital? ...
What volume of 0.5 mol dm-3 H2SO4 will exactly neutralize 20cm3 of 0.1 mol dm-3 NaOH solution?...
The d-block elements are paramagnetic because they ...
The oxidation state of manganese in potassium permanganate is ...