CBSE Class 11 (Science) Surface Tension — practice questions
51 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice CBSE Class 11 (Science) Surface Tension in the app →Newton's first law of motion is also known as the law ofA cricket ball of mass 150 g moving at (3i+4j) m/s is hit to -(3i+4j) m/s. The magnitude of momentum change isConservation of linear momentum in a collision follows directly fromA force F acts on a 2 kg body for 3 s, changing its speed from 2 m/s to 8 m/s along the line of F. The magnituThe maximum static friction force on a body is f = μN. Static friction is best described asA 10 kg block on a frictionless surface is pulled by 20 N horizontally and 20 N at 60° above horizontal. The hImpulse equalsA body in equilibrium under several forces hasA 0.5 kg ball hits a wall at 10 m/s and rebounds at 10 m/s. The impulse on the ball isNewton's second law in vector form isA lift accelerates upward at 2 m/s². The apparent weight of a 50 kg person (g=10) isTwo blocks of 2 kg and 3 kg connected by a string are pulled by 10 N on the 3 kg block (frictionless). The accThe SI unit of force, the newton, equalsAs per your syllabus, an ISOLATED system is exemplified by which container?As per your syllabus, for an ADIABATIC process (no heat exchange, q = 0), the first law reduces to which form?As per your syllabus, + eqn 5.7, the ENTHALPY H is defined as which quantity?As per your syllabus, for vaporisation of 1 mol of water at 100 °C and 1 bar, given ΔH = 41 kJ/mol, what is ΔUAs per your syllabus, Δ_f H° of methane CH₄(g) is which value?As per your syllabus, the standard enthalpy of combustion of GLUCOSE (C₆H₁₂O₆) is which?As per your syllabus, in CH₄ atomisation requires 1665 kJ/mol. What is the MEAN C-H bond enthalpy?As per your syllabus, the bond enthalpy of N≡N triple bond is which value — among the highest known for diatomAs per your syllabus, the Δ_f H° of C(diamond) is which value (note: NOT zero, because graphite — not diamond As per your syllabus, eqn 5.18, the entropy change for a REVERSIBLE process is given by which expression?As per your syllabus, eqn 5.20-21, GIBBS energy G and its change ΔG at constant T are given by which expressioAs per your syllabus, a reaction with ΔH < 0 AND ΔS > 0 is spontaneous under which condition?As per your syllabus, eqn 5.23, the relation between ΔG° and equilibrium constant K is which?As per your syllabus, the dimensions of FORCE are which set?As per your syllabus, the MAXIMUM acceleration of a train such that a box on its floor (μ_s = 0.15) remains stAs per your syllabus, a cyclist taking a R=3 m turn at 18 km/h (μ_s = 0.1) is in which condition?A liquid poured into a container acquires a:The free surface of a liquid possesses some additional:Surface tension concerns only liquids because gases have no:Surface tension is defined as a force per unit:Surface tension also equals the surface energy per unit:The surface energy of an interface depends on:Compared with molecules inside, those at the interface have energy:The angle between the tangent to a liquid and the solid is the:Whether a liquid spreads or forms droplets is decided by the:Water placed on a lotus leaf:Water placed on a clean plastic plate:An obtuse angle of contact means the liquid:Mercury placed on any ordinary surface:Water sticks to glass, but mercury does not:Oil climbs up a cotton wick in spite of:Sap and water rise up to the top of the leaves of a:The hair of a paint brush forms a fine tip when it is:Free liquid drops and bubbles are spherical if we neglect:For a given volume the least surface area belongs to a:The pressure inside a spherical drop, against that outside, is:Detergents and dying substances act as:Waterproofing agents are added to create a large: