Viscosity NEET Questions

Physics - Properties of Solids and Liquids

Viscosity MCQ Questions


13.
The dimensional formula of coefficient of viscosity η is:
A.
[ML⁻¹T⁻²]
B.
[MLT⁻¹]
C.
[M⁰L⁰T⁰]
D.
[ML⁻¹T⁻¹]
😑 View Answer Rough Work Error
ANSWER :
D. [ML⁻¹T⁻¹]
14.
The CGS unit of viscosity is the poise (P). The relation between poise and SI unit is:
A.
1 P = 10 Pa·s
B.
1 P = 0.1 Pa·s
C.
1 P = 1 Pa·s
D.
1 P = 100 Pa·s
😑 View Answer Rough Work Error
ANSWER :
B. 1 P = 0.1 Pa·s
15.
According to NCERT Table 9.2, the viscosity of blood at 37°C is:
A.
1.0 mPl
B.
0.3 mPl
C.
113 mPl
D.
2.7 mPl
😑 View Answer Rough Work Error
ANSWER :
D. 2.7 mPl
16.
Which of the following correctly lists viscosities in increasing order (from NCERT Table 9.2)?
A.
Air < Blood < Water < Glycerine < Honey
B.
Air < Water < Blood < Glycerine < Honey
C.
Honey < Glycerine < Blood < Water < Air
D.
Water < Air < Blood < Honey < Glycerine
😑 View Answer Rough Work Error
ANSWER :
B. Air < Water < Blood < Glycerine < Honey
17.
From NCERT Table 9.2, the viscosity of machine oil at 16°C is 113 mPl and at 38°C is 34 mPl. This data shows that for liquids, viscosity:
A.
Remains constant with temperature
B.
Decreases with temperature
C.
Increases with temperature
D.
First increases then decreases
😑 View Answer Rough Work Error
ANSWER :
B. Decreases with temperature
18.
The viscosity of gases with increasing temperature:
A.
Decreases because molecules move faster
B.
Remains constant
C.
First decreases then increases
D.
Increases because random molecular motion increases
😑 View Answer Rough Work Error
ANSWER :
D. Increases because random molecular motion increases