CBSE Class 11 Surface Chemistry — practice questions
26 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 Surface Chemistry in the app →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 = Per NCERT §3.2, John Newlands' LAW OF OCTAVES (1865) noted what about elements arranged by increasing atomic wPer NCERT §3.3, Henry Moseley's 1913 work was based on plotting which quantity vs atomic number Z to obtain a Per NCERT Table 3.5, the IUPAC OFFICIAL name + symbol for Z = 104 is which?Per NCERT §3.6, elements are classified into FOUR BLOCKS based on what?Per NCERT §3.6.1, alkali metals (Group 1) and alkaline earth metals (Group 2) have outermost configurations ofPer NCERT §3.6.2, the p-block elements occupy which groups in the periodic table, with valence-shell configuraPer NCERT §3.7.1(a), the COVALENT RADIUS of a non-metal atom is defined as which quantity?Per NCERT §3.7.1(b), why is a CATION smaller than its parent neutral atom?Per NCERT §3.7.1(b), why is an ANION LARGER than its parent neutral atom?Per NCERT §3.7.1(c), why is the FIRST ionisation enthalpy of BORON (Z=5) LESS than that of BERYLLIUM (Z=4) desPer NCERT §3.7.1(d), why do NOBLE GASES have LARGE POSITIVE electron gain enthalpies (e.g. He +48, Ne +116 kJ/Per NCERT Problem 3.8, predicting the formula formed by SILICON (Group 14) and BROMINE (Group 17) gives which Per NCERT §3.7.2(b) (anomalous), the DIAGONAL RELATIONSHIP refers to similarity between which pairs of period-Per NCERT §3.7.3, oxides of elements show what acid–base trend across a period?