a. The solution formed is an ideal solution b. The solution is non-ideal showing +ve deviation from Raoult’s Law c. The solution is non ideal showing -ve deviation from Raoult’s Law d. n- heptane shows + ve deviation while ehtnaol …
kg per metre3 and the wing is 10 m long and has an average width of 2 m, then the difference of the pressure on the two sides of the wing of (a) 4095.0 Pascal (b) 409.50 Pascal (c) 40.950 …
a. Behaves like a near ideal solutions b. Obeys Raoult’s law c. Shows a negative deviation from Raoult’s law d. Shows a positive deviation from Raoult’s law Ans. d (8)
a. Ethanol- Acetone b. Chlorobenzene- Bromobenzene c. Chloroform- Acetone d. Benzene Toluene ANSWER . C Explanation : Due to hydrogen bonding (5)
a. 0.027 mmHg b. 0.028 mmHg c. 0.017mmHg d. 0.031 mmHg Ans. c (46)
A. Normal boiling point B. Normal freezing point C. Enthalpy of vaporization a. A only b. A and B only c. A and C only d. A , B and C ANSWER . B (11)
(a) AT-1 (b) AT (c) A2T (d) A2T2 Ans. b (5)
(a) Decrease (b) Increase (c) Remains the same (d) None of the above Ans. b (3)
(a) 8πr2T (b) 2πr2T (c) 4πr2T (d) (4/3)πr2T Ans. a (5)
(a) 18 π ergs (b) 180 π ergs (c) 1800 π ergs (d) 8000 π ergs Ans. c (4)
(a) W/2 (b) 2W (c) 4W (d) (7/3) W Ans. c (22)
(a) 5 x 102 j (b) 2.5 x 10-2 j (c) 2 x 10-1 (d) 5 x 10-1 j Ans. c (5)
(a) 2 πD2T (b) 4 πD2T (c) 6 πD2T (d) 8 πD2T Ans. c (8)
(a) 4π(D2-d2)T (b) 8π(D2-d2)T (c) π(D2-d2)T (d) 2π(D2-d2)T Ans. d (6)
(a) 2 πR2T (b) 3 πR2T (c) 4 πR2T (d) 2 πR2T Ans. c (30)
into 106 droplets is (Surface tension of water= 72 x 10-3 J/m2 (a) 9.58 x 10-5 j (b) 8.95 x 10-5 j (c) 5.89 x 10-5 j (d) 5.98 x 10-6 j Ans. b (251)
(a) Height of the liquid in the tube A is maximum (b) Height of the liquid in the tubes A and B is the same (c) Height of the liquid in all the three tubes is the same (d) Height …
If g=10 m/s2 then the velocity head of oil will be (a) 1.25 m (b) 12.5 m (c) 0.125 m …
(a) 4πT(nr2-R2) (b) (4/3)π(r3n-R2) (c) 4πT(R2-nr2) (d) 4πT(nr 2 + R2) Ans.a (4)
(a) Zero (b) Smaller (c) The same (d) Greater Ans. d (7)
(a) Energy is liberated (b) Energy is absorbed (c) Neither liberated nor absorbed (d) Some mass is converted into energy Ans. a (6)
(a) Zero (b) 19 erg (c) 46 erg (d) 74 erg Ans. d (3)
0.4 × 103 kg/m3 falls into water from a height of 9 cm . To what depth does the ball sink (a) 9 cm (b) 6 cm (c) 4.5 cm …
(a) Acute angle (b) Obtuse angle (c) 90° (d) 0° Ans. (d) Tangent drawn at point of contact makes 0° with wall of container. (8)
(a) Water and glass; glass and mercury (b) Pure water and glass; glass and alcohol (c) Silver and water; mercury and glass (d) Silver and chromium; water and chromium Ans. (b) Both liquids water and alcohol have same nature (e. …
(a) Concave upward (b) Convex upward (c) Concave downward (d) Convex downward Ans. (b) Since for such liquid (Non-wetting) angle of contact is obtuse. (11)
(a) Flat (b) Concave (c) Convex (d) Cylindrical Ans. b (6)
of 00 angle of contact (a) Plane (b) Parabolic (c) Semi-spherical (d) Cylindrical Ans. c (10)
(a) 0° (b) 900 (c) 450 (d) 330 Ans. a (30)
(a) Greater than (b) Less than 90° (c) Equal to 90° (d) Equal to 0° Ans. a (2)
(a) Increase (b) Remain unchanged (c) Increase or decrease (d) Decrease Ans. b (5)
ρ in a vertical plane with its base on the surface of the liquid. The thrust on the lamina is (a) (1/2) Aρgh …
(a) ρ= ρ0 [1+ (λd θ)] (b) ρ= ρ0 [1- (λd θ)] (c) ρ= ρ0 λd θ …
(a) r (b) r2 (c) r-1 (d) r-2 Ans. c (6)
ρ of water of bulk modulus B at a depth y in the ocean is related to the density at surface ρ0 by the relation (a) ρ= ρ0[1-(ρ0 gy/B)] (b) ρ= ρ0[1+(ρ0 …
r1 and r2(r2>r1) coalesce, the radius of curvature of common surface is (a) r2-r1 (b) r2-r1/r1r2 (c) r1r2/ r2-r1 (d) r2 +r1 Ans. c (8)
ρ1 and ρ2 are mixed, then density of mixture is given by (a) ρ= (ρ1 + ρ2) /2 (b) ρ= (ρ1 + ρ2) …
25 x 10-3 Nm-1 . The excess pressure inside a soap bubble of diameter 1 cm is (a) 10 Pa (b) 20 Pa (c) 5 Pa (d) None of the above Ans. b (9)