4 JEE Main 2015 Some Basic Concepts of Chemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2015 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.
A sample of a hydrate of barium chloride weighing 61 g was heated until all the water of hydration is removed. The drie…
The molecular formula of a commercial resin used for exchanging ions in water softening is C 8 H 7 S O 3 N a molecular…
In the following reaction: A + 2 B + 3 C ⇌ A B 2 C 3 6 . 0   g of A , 6.0 × 10 23   atoms of B and…
An element X shows + 3 , oxidation state in its compounds. Out of the four compounds given below, choose the incorrect…