📚NCERT Questions — CBSE11
591 solved questions with detailed explanations
In a cathode ray discharge tube, the cathode rays originate from which electrode?
Why is the bond angle in NH3 (107°) less than the tetrahedral angle (109.5°)?
What is the magnetic property of the O2 molecule?
The mass of one mole of a substance in grams is called its:
If a compound has the empirical formula CH2Cl and its molar mass is 98.96 g/mol, what is its molecular formula? (Approximate atomic masses: C=12, H=1, Cl=35.5)
The First Law of Thermodynamics is also known as the law of:
What is the conjugate base of HCO3-?
What is bond enthalpy?
If the pH of a solution is 11.12, what is the concentration of OH-?
The electron spin quantum number (m_s) describes the spin orientation of an electron. Its possible values are: