A mercury drop does not spread on a glass plate because the angle of contact between glass and mercury is

(1) Acute

(2) Obtuse

(3) Zero

(4) 90°

Subtopic:  Surface Tension |
 86%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The liquid meniscus in the capillary tube will be convex if the angle of contact is

(1) Greater than 90°

(2) Less than 90°

(3) Equal to 90°

(4) Equal to 0°

Subtopic:  Capillary Rise |
 81%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The value of contact angle for kerosene with a solid surface.

(1) 0°

(2) 90°

(3) 45°

(4) 33° 

Subtopic:  Surface Tension |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

Nature of meniscus for liquid of 00 angle of contact

(1) Plane

(2) Parabolic

(3) Semi-spherical

(4) Cylindrical

Subtopic:  Surface Tension |
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A liquid wets a solid completely. The meniscus of the liquid in a sufficiently long tube is 

(1) Flat

(2) Concave

(3) Convex

(4) Cylindrical

Subtopic:  Surface Tension |
 74%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

For which of the two pairs, the angle of contact is same

(1) Water and glass; glass and mercury

(2) Pure water and glass; glass and alcohol

(3) Silver and water; mercury and glass

(4) Silver and chromium; water and chromium

Subtopic:  Surface Tension |
 64%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

If the surface of a liquid is plane, then the angle of contact of the liquid with the walls of the container is -

(1) Acute angle

(2) Obtuse angle

(3) 90°

(4) 0°

Subtopic:  Capillary Rise |
 60%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

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

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

(2) The size of the bubbles remains the same

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

(4) The air flows from the larger

Subtopic:  Surface Tension |
 84%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The surface tension of the soap solution is 25×10-3 Nm-1 . The excess pressure inside a soap bubble of diameter 1 cm is 

(1) 10 Pa

(2) 20 Pa

(3) 5 Pa

(4) None of the above

Subtopic:  Surface Tension |
 67%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
Links
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

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

(1) r2-r1

(2)  r2-r1r2r1

(3) r2r1r2-r1

(4) r2+r1

Subtopic:  Surface Tension |
 82%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh