📚NCERT Questions
1,675 solved questions with detailed explanations
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?
Which of the following metals is at the bottom of the reactivity series, indicating least reactivity?
Propan-1-ol (CH₃CH₂CH₂OH) and Propan-2-ol (CH₃CH(OH)CH₃) are examples of which type of isomerism?
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:
Which of the following alkanes would have the highest boiling point?
The activity where shoots bend towards light and roots away from light demonstrates:
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?
How do plants get rid of excess water?