📚NCERT Questions — CBSE11
591 solved questions with detailed explanations
Consider the expansion from Problem 5.2 (initial volume 2 L, final volume 10 L) against a constant external pressure of 1 atm. How much work is done (in L atm)?
Which of the following mixtures would form an acidic buffer solution?
The 'black polished ware' of northern India, which could not be replicated and is still a chemical mystery, indicates mastery over what specific aspect of ancient chemistry?
What is the hybridisation of the central carbon atom in CH3COOH (acetic acid)?
What is the relationship between the ionization constant of an acid (Ka) and its conjugate base (Kb) at a given temperature?
What is the percentage s-character in an sp3 hybrid orbital?
What is the first step in balancing a redox reaction using the half-reaction method?
Calculate the oxidation number of manganese in K2MnO4.
The concept of 'fractional oxidation number' for an element in a compound (e.g., carbon in C3O2 is 4/3) primarily indicates:
The dynamic nature of chemical equilibrium can be demonstrated by starting the Haber's process with D2 (deuterium) instead of H2. What is observed at equilibrium?