📚NCERT Questions — CBSE11
591 solved questions with detailed explanations
Despite its successes, Dalton's Atomic Theory failed to explain which two phenomena?
What happens to the pH of a solution when a salt formed from a weak acid and a strong base (e.g., CH3COONa) undergoes hydrolysis?
What is the electronic configuration of Na⁺ (Z=11)?
A reducing agent (reductant) is a reagent that:
The kilogram is defined by taking the fixed numerical value of the Planck constant. Which units are used to express the Planck constant in this definition?
For a weak base MOH, the base ionization constant Kb is given by:
The ejection of a photoelectron from silver metal can be stopped by applying a voltage of 0.35 V when radiation of 256.7 nm is used. Calculate the work function for silver metal in eV. (1 eV = 1.602 x
An empirical formula represents the:
Given carbon isotopes: 12C (98.892%, 12 u), 13C (1.108%, 13.00335 u), and 14C (2x10^-10%, 14.00317 u). What is the calculated average atomic mass of carbon?
Which of the following is an example of a chemical property?