Ajneesh
-
Jun 6, 2022
(a) Magnetic substances (b) Molecules of different substances (c) Molecules of same substances (d) None of these Ans. (c) The...
-
Jun 6, 2022
(a) Surface tension of water is very high (b) Surface tension of water is very low (c) Viscosity of oil...
-
Jun 6, 2022
The force required to separate two glass plates of area 10-2m2 with a film of water 0.05 mm thick between...
-
Jun 6, 2022
(a) Viscosity (b) Surface tension (c) Weight (d) Floating force Ans. b (13)
-
Jun 6, 2022
(a) Surface tension is more (b) Surface tension is less (c) Consumes less soap (d) None of these Ans. (b) ...
-
Jun 6, 2022
A 10 cm long wire is placed horizontally on the surface of water and is gently pulled up with a...
-
Jun 6, 2022
(a) 2πrT + W (b) 2πrT COSθ – W (c) 2πrT COSθ +W (d) W-2πrT COSθ Ans. c (12)
-
Jun 6, 2022
(a) Atmospheric pressure exerts a force on a liquid drop (b) Volume of a spherical drop is minimum (c) Gravitational...
-
Jun 6, 2022
(a) Inertia (b) Pressure (c) Surface tension (d) Viscosity Ans. (c) Surface tension pulls the plates towards each other. (7)
-
Jun 6, 2022
(a) Cohesive force is less than adhesive force (b) Cohesive force is greater than adhesive force (c) Angle of contact...
-
Jun 6, 2022
(a) It will mix up with oil (b) It spreads in the form of a film (c) It will deform...
-
Jun 6, 2022
(a) It increases with the increase of temperature (b) Nature of the liquid in contact (c) Presence of soap that...
-
Jun 6, 2022
(a) Angle of contact is acute (b) Cohesion force is more (c) Adhesion force is more (d) Density of mercury...
-
Jun 6, 2022
(a) 4o C (b) 25o C (c) 50o C (d) 75o C Ans. d (10)
-
Jun 6, 2022
(a) Horizontal (b) Almost vertical (c) Concave (d) Convex Ans. d (6)
-
Jun 6, 2022
The maximum force, in addition to the weight required to pull a wire of 5.0 cm long from the surface...
-
Jun 6, 2022
(a) Increase (b) Decrease (c) Remain unchanged (d) None of the above Ans. a (42)
-
Jun 6, 2022
(a) Attraction (b) Repulsion (c) Attraction or repulsion (d) None of the above Ans. a (3)
-
Jun 6, 2022
(a) Cohesive force of oil>> adhesive force between oil and glass (b) Cohesive force of oil > cohesive force of...
-
Jun 6, 2022
(a) 2 TL (b) 4 TL (c) 8 TL (d) 10 TL Ans. (c) Force on each side =2TL (due...
-
Jun 6, 2022
(a) Increases with area (b) Decreases with area (c) Increase with temperature (d) Decrease with temperature Ans. d (8)
-
Jun 6, 2022
(a) Solids, liquids and gases (b) Liquids (c) Gases (d) Matter Ans. b (8)
-
Jun 6, 2022
(a) 30 dynes (b) 60 dynes (c) 750 dynes (d) 750 π dynes Ans. d (47)
-
Jun 6, 2022
(a) Only on the cohesive force of liquid molecules (b) Only on the adhesive force between the molecules of glass...
-
Jun 6, 2022
(a) Dancing of a camphor piece over the surface of water (b) Small mercury drop itself becomes spherical (c) A...
-
Jun 6, 2022
(a) C.F. for water > A.F. for water and oil (b) C.F. for oil > A.F. for water and oil (c) C.F. for...
-
Jun 6, 2022
(a) Force of attraction between hair (b) Surface tension (c) Viscosity of water (d) Characteristic property of hairs Ans. b...
-
Jun 3, 2022
(a) water is absorbed by the coating (b) Cohesive force becomes greater (c) Water is not scattered away by the...
-
Jun 3, 2022
(a) Surface tension (b) Less weight (c) Upthrust of liquid (d) None of the above Ans. a (13)
-
Jun 3, 2022
(a) Force of surface tension is equal and opposite to the force of gravity (b) Force of surface tension predominates...
-
Jun 3, 2022
(a) Elastic membrane is formed on water due to property of surface tension (b) Spiders and insects are lighter (c) Spiders...
-
Jun 3, 2022
(a) Increase in the saturated vapour pressure of water (b) Root mean square velocity of air molecules inside the bubble...
-
Jun 3, 2022
(a) 0°C (b) 277 K (c) 370°C (d) Slightly less than 647 K Ans. c,d (14)
-
Jun 3, 2022
(a) It will remain on it as a sphere (b) It will spread as a thin layer (c) It will...
-
Jun 3, 2022
(a) Increases (b) Decreases (c) Remains the same (d) Increases then decreases Ans. b (13)
-
Jun 3, 2022
(a) Chemicals of soap change (b) It increases the surface tension of the solution (c) It absorbs the dirt (d) ...
-
Jun 3, 2022
(a) Surface tension of the liquid (b) Density of liquid (c) Viscosity of liquid (d) Temperature of air only Ans....
-
Jun 3, 2022
(a) Surface tension of the liquid (b) Density of liquid (c) Viscosity of liquid (d) Temperature of air only Ans....
-
Jun 3, 2022
(a) Frictional forces between molecules (b) Cohesive forces between molecules (c) Adhesive forces between molecules (d) Gravitational forces Ans. b...
-
Jun 3, 2022
(a) Density of the liquid (b) Surface tension (c) Atmospheric pressure (d) Gravity Ans. b (13)