9 JEE Main 2013 Some Basic Concepts of Chemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2013 previous-year questions from the Some Basic Concepts of Chemistry chapter of Chemistry. Each links to a full solution with a verified answer key. To see the whole chapter across all years, visit the Some Basic Concepts of Chemistry chapter hub.
Number of atoms in the following samples of substances is largest in:
The molarity of a solution obtained by mixing 750   mL of 0 . 5 ( M )   HCl with 250   mL of 2 ( M ) …
Experimentally it was found that a metal oxide has formula M 0.98 O . Metal M, is present as M 2 + and M 3 + in its oxi…
How many litres of water must be added to 1 litre of aqueous solution of HCl with a pH of 1 to create an aqueous soluti…
10 ~mL of 2(M) ~NaOH solution is added to 200 ~mL of 0.5 (M) of NaOH solution. What is the final concentration ?
How many grams of methyl alcohol should be added to 10 litre tank of water to prevent its freezing at 268 ~K ? ( Kf for…
The density of 3 M solution of sodium chloride is 1.252 ~g ~mL⁻¹. The molality of the solution will be : ( . molar mass…
6 litres of an alkene require 27 litres of oxygen at constant temperature and pressure for complete combustion. The alk…
A gaseous hydrocarbon on combustion gives 0 . 72   g of water and 3 . 08   g CO 2 . What is the empirical for…