CBSE Class 11 (Science) Atoms — practice questions
18 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Atoms in the app →Bohr's postulate quantises the angular momentum of an electron in a stationary orbit asWhich spectral series of hydrogen lies in the visible region of the electromagnetic spectrum?The minimum wavelength $\lambda_{\min}$ in the continuous X-ray spectrum of an X-ray tube depends only onThe ratio of the longest wavelength in the Lyman series to the longest wavelength in the Balmer series of hydrThe radius of the $n$th Bohr orbit in a hydrogen-like atom of nuclear charge $Z$ scales asThe de Broglie wavelength $\lambda$ of an electron in the $n$th Bohr orbit of hydrogen, in terms of the orbit According to VSEPR theory, the shape of a molecule is determined byThe hybridisation of carbon in methane (CH₄) isWhich molecule is non-polar despite having polar bonds?The bond order of the oxygen molecule O₂ (by molecular orbital theory) isA coordinate (dative) bond differs from a normal covalent bond in thatWhich species has sp hybridisation on the central atom?As bond order increases, bond lengthAn ionic bond forms byThe shape of NH₃ is pyramidal rather than planar becauseWhich has the highest dipole moment?Among the following, which is paramagnetic?Formal charge on an atom =