9 public questions tagged with this topic.
Sublimation is the process where a substance transitions directly from solid to gas, as observed with iodine under certain conditions. As per NCERT, applying relevant law/formula with correct units and sign convention leads to Sublimation. This satisfies dimensional consistency and physical conditions given, so option D is scientifically correct.
Ref: NCBI Bookshelf, Ideal Gas Law: P1V1/T1 = P2V2/T2.
A Lewis acid accepts an electron pair. BF₃ has an incomplete octet and can accept an electron pair, making it a Lewis acid.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Relationship Between Kp Kc and Factors Affecting Equilibrium - Le Chatelier
For an exothermic reaction, increasing temperature shifts equilibrium left, favoring reactants.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Physical Equilibrium - Solid-Liquid Gas-Liquid and Henry's Law
Increasing temperature favors the endothermic process (evaporation), shifting the equilibrium towards the vapor phase.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Physical Equilibrium - Solid-Liquid Gas-Liquid and Henry's Law
H₂O loses a proton ( H+ ) to form OH- , which is its conjugate base.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Physical Equilibrium - Solid-Liquid Gas-Liquid and Henry's Law
Increasing pressure (decreasing volume) favors the side with fewer moles of gas. Here, 2 mol → 2 mol , so Δ n = 0 , and there is no shift.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Homogeneous and Heterogeneous Equilibria and Applications of Equilibrium Constant
H₂PO₄- can donate H+ (acid) to form HPO₄²⁻ or accept H+ (base) to form H₃PO₄ , making it amphoteric.
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Acid-Base Theories - Arrhenius Bronsted-Lowry Lewis and Salts Hydrolysis
Al(OH)3 can accept a lone pair (acid) or donate OH- (base).
Ref: NCERT Class 11 Chemistry > Chapter 6: Equilibrium > Topic: Acid-Base Theories - Arrhenius Bronsted-Lowry Lewis and Salts Hydrolysis
For a reversible adiabatic process, TVγ⁻¹ = constant, where γ = Cp/Cv.
Ref: NCERT Class 11 Chemistry > Chapter 5: Thermodynamics > Topic: Heat Capacity and Calorimetry and Measurement of Enthalpy
