If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of container is 
(a) Acute angle                (b) Obtuse angle
(c) 90°                            (d) 0°

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


If two soap bubbles of different radii are in communication with each other

(a) Air flows from larger bubble into the smaller one

(b) The size of the bubbles remains the same

(c) Air flows from the smaller bubble into the large one and the larger bubble grows at the expense of the smaller one

(d) The air flows from the larger

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The surface tension of soap solution is 25×10-3 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

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


When two soap bubbles of radius r1 and r2 (r2>r1) coalesce, the radius of curvature of common surface is

(a) r2-r1                       (b)  r2-r1r2r1

(c) r2r1r2-r1                          (d) r2+r1

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The excess pressure due to surface tension in a spherical liquid drop of radius r is directly proportional to

(a) r                                 (b) r2

(c) r-1                               (d) r-2

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


A long cylindrical glass vessel has a small hole of radius 'r' at its bottom. The depth to which the vessel can be lowered vertically in the deep water bath (surface tension T) without any water entering inside is

(a) 4T/rρg                   (b) 3T/rρg

(c) 2T/rρg                   (d) T/rρg

Concept Questions :-

Capillary rise
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The excess of pressure inside a soap bubble than that of the outer pressure is

(a) 2Tr                       (b) 4Tr

(c) T2r                         (d) Tr

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The pressure of air in a soap bubble of 0.7cm diameter is 8 mm of water above the pressure outside. The surface tension of the soap solution is

(a) 100 dyne/cm                              (b) 68.66 dyne/cm
(c) 137 dyne/cm                              (d) 150 dyne/cm

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


Pressure inside two soap bubbles are 1.01 and 1.02 atmospheres. Ratio between their volumes is

(a) 102 : 101                             (b) (102)3:(101)3
(c) 8 : 1                                     (d) 2 : 1

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level:


The radii of two soap bubbles are r1 and r2 . In isothermal conditions, two meet together in vaccum. Then the radius of the resultant bubble is given by

(a) R=(r1+r2)/2                    (b) R=r1(r1r2+r2)

(c) R2=r12+r22                         (d) R=r1+r2

Concept Questions :-

Surface tension
To view Explanation, Please buy any of the course from below.
High Yielding Test Series + Question Bank - NEET 2020

Difficulty Level: