7 JEE Main 2012 Some Basic Concepts of Chemistry previous-year questions with verified answers and step-by-step solutions.
These are the JEE Main 2012 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 transition metal M forms a volatile chloride which has a vapour density of 94.8. If it contains 74.75 \% of chlorine…
An aqueous solution of oxalic acid dihydrate contains its 6.3 ~g in 250 ml. The volume of 0.1 ~N NaOH required to compl…
5 ~g of benzene on nitration gave 6.6 ~g of nitrobenzene. The theoretical yield of the nitrobenzene will be
The density of a solution prepared by dissolving 120 ~g of urea (mol. Mass =60 u ) in 1000 ~g of water is 1.15 ~g / mL.…
The concentrated sulphuric acid that is peddled commercial is 95 \% H₂ SO₄ by weight. If the density of this commercial…
The ratio of number of oxygen atoms (O) in 16.0 ~g ozone (O₃ ), 28.0 ~g carbon monoxide (CO) and 16.0 oxygen (O₂ ) is (…
When CO₂₍~g₎ is passed over red hot coke it partially gets reduced to CO(g). Upon passing 0.5 ~L of CO₂(g) over red hot…