JEE Advanced Surface Chemistry — practice questions
62 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice JEE Advanced Surface Chemistry in the app →The modern periodic law states that the physical and chemical properties of elements are periodic functions ofElements of the modern periodic table are classified into how many blocks based on the differentiating electroAcross a period from left to right, the atomic radius generally:Which element has the highest first ionization energy in period 2?Which of the following arrangements is in correct order of increasing electronegativity (Pauling scale)?The element with electronic configuration $1s^2 2s^2 2p^6 3s^2 3p^6 4s^2 3d^{10} 4p^3$ belongs to which group Adsorption isotherm:Hydrogenation of vegetable oils to make margarine uses catalyst: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?The solubility of a gas in a liquid generally:A $0.5$ molal aqueous solution of a non-electrolyte ($K_b = 0.52$ K kg/mol for water) boils at:A solution of $0.1$ M sucrose at $300$ K has osmotic pressure (using $R = 0.0821$ L atm/(mol K)):The van't Hoff factor $i$ for $0.1$ m NaCl (assuming complete dissociation) is:The MOLARITY of a solution containing 58.5 g NaCl dissolved in 1 L of solution is:The KEY DIFFERENCE between molarity (M) and molality (m) is that:HENRY'S LAW states that at constant temperature:A MINIMUM-BOILING azeotrope arises from:Which of these is NOT a colligative property?Salt is sprinkled on icy roads in cold countries to:The OSMOTIC PRESSURE π of a dilute solution is given by:The van't Hoff factor (i) for sodium chloride (NaCl) in water is approximately:Raoult's law for an ideal solution of two volatile components states:The mole fraction of ethylene glycol in a 20 % (w/w) aqueous solution (molar masses: glycol 62, water 18) is c5 g of NaOH (molar mass 40 g/mol) is dissolved in 450 mL solution. The molarity is closest toWhich of the following concentration units of a solution is temperature-dependent?Molality of a solution containing 2.5 g of ethanoic acid (CH₃COOH, M = 60 g/mol) in 75 g of benzene is closestHenry law states that the partial pressure of a gas in solution isFor a solution of a non-volatile solute, Raoult law implies that the vapour pressure of the pure solventFor an ideal binary liquid solution, Raoult law gives the total vapour pressure asWhich of the following is NOT a colligative property?If a solute dimerises in solution, its observed molar mass compared with the calculated value will beA negative deviation from Raoult law is expected whenVan't Hoff factor i > 1 for a solute indicatesOsmotic pressure π of a dilute solution obeys π = C R T. Here C representsThe molality of a 1 M aqueous NaCl solution (density = 1.04 g/mL, NaCl M = 58.5 g/mol) is closest toWhich of these solutions will boil at the highest temperature at 1 atm?The mass of NaOH (M = 40 g/mol) required to prepare 500 mL of a 0.20 M NaOH solution is