CBSE Class 11 (Science) S Block Elements — practice questions
42 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) S Block Elements 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 = As per your syllabus, the MODERN periodic law (post-Moseley 1913) states that properties of elements are a perAs per your syllabus, the IUPAC system numbers the groups in the modern table from which range, replacing the As per your syllabus, in IUPAC systematic nomenclature for Z > 100, what are the digit roots for 1, 2 and 0 reAs per your syllabus, the IUPAC systematic name + symbol for the element with atomic number 120 are which?As per your syllabus, the IUPAC OFFICIAL name + symbol for Z = 104 is which?As per your syllabus, the FIRST IONISATION ENTHALPY of an element X represents which process?As per your syllabus, the ELECTRON GAIN ENTHALPY ΔₑgH represents enthalpy change for which reaction?As per your syllabus, predicting the formula formed by SILICON (Group 14) and BROMINE (Group 17) gives which cIn s-block elements, the last electron enters the outermost:Because the s-orbital holds only two electrons, the s-block has groups numbering:Which element belongs to Group 1?The elements of Group 1 are collectively known as the:Alkali metals are so called because their hydroxides are strongly:Which element belongs to Group 2?Group 2 elements except one are known as the alkaline earth metals; the exception is:Alkaline earth metals are so called because their oxides are alkaline and found in the:Among the alkali metals, the two abundant ones are potassium and:Francium is described as highly:The longest lived isotope of francium has a half-life of only:Calcium and magnesium rank fifth and sixth in abundance in the:The first element of each s-block group differs from the rest and resembles the:Lithium shows similarities to which element?The resemblance of lithium to magnesium is called the relationship that is:The diagonal relationship is due to similarity in ionic size and the ratio of:All the alkali metals are described as silvery white, light and:Alkali metals have low density because of their:Alkali metals colour a flame because heat excites the electron that is:Alkali metals can be determined by flame photometry or by spectroscopy that is:Alkali metals are useful as electrodes in cells that are:Among the alkali metals, the most powerful reducing agent is: