Some Basic Concepts of Chemistry · Chemistry · COMEDK
MCQ (Single Correct Answer)
What mass of Silver chloride, in grams, gets precipitated when $$150 \mathrm{~ml}$$ of $$32 \%$$ solution of Silver nitrate is reacted with $$150 \mathrm{ml}$$ of $$11 \%$$ Sodium chloride solution? Atomic mass in $$\mathrm{g} / \mathrm{mol}: \mathrm{Ag}=108, \mathrm{Na}=23, \mathrm{Cl}=35.5, \mathrm{~N}=14, \mathrm{O}=16$$
Sulphuric acid used in Lead Storage battery has a concentration of $$4.5 \mathrm{~M}$$ and a density of $$1.28 \mathrm{~g} / \mathrm{~ml}$$. The molality of the acid is __________.
A given mass of a hydrocarbon on complete combustion produced $$176 \mathrm{~g}$$ of $$\mathrm{CO}_2$$ and $$90 \mathrm{~g}$$ of $$\mathrm{H}_2 \mathrm{O}$$. What is the Molecular formula of the compound?
$$15 \mathrm{~g}$$ of $$\mathrm{CaCO}_3$$ completely reacts with
$$\mathrm{Mg}(\mathrm{OH})_2$$ is used as an antacid. If a person, suffering from acidity, produces $$2.5 \mathrm{~L}$$ of Gastric juice in a day, approximately how many antacid tablets, each containing $$600 \mathrm{~mg}$$ of $$\mathrm{Mg}(\mathrm{OH})_2$$, will be required to completely neutralise the whole $$\mathrm{HCl}$$ produced in the stomach in one day? (Gastric juice contains $$3.0 \mathrm{~g}$$ of $$\mathrm{HCl}$$ per L). (Atomic masses: $$\mathrm{Mg}=24 \mathrm{~g} / \mathrm{mol}, \mathrm{O}=16 \mathrm{~g} / \mathrm{mol}$$ & $$\mathrm{H}=1 \mathrm{~g} / \mathrm{mol}$$.)
What would be the molarity of one litre solution of 22.2 g of CaCl$$_2$$ ?
The number of gram molecules of chlorine in $$6.02\times10^{25}$$ hydrogen chloride molecules is
Which one of the following has maximum number of atoms of oxygen?
Molarity of a given orthophosphoric acid solution is 3M. It’s normality is
The mass of a metal, with equivalent mass 31.75, which would combine with 8 g of oxygen is