WBCHSE Class 11 Chemistry: Some Basic Concepts of Chemistry – Chhaya Publication Unit-1 (Some Basic Concepts of Chemisiry) of Chhaya Chemistry (xi) Part-1 Q1. The ratio of molecular masses of…
WBCHSE Class 11 Chemistry: Structure of Atom – Chhaya Publication MCQs from Structure of Atom Q1. The set of quantum numbers for the 23rd electron of chromium (atomic number \(…
Class 11: Classification of Elements and Periodicity in Properties MCQs from Unit – 3 Q1. Generally, IE increases from left to right in a period, but there are some exceptions.…