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This section includes 10 Mcqs, each offering curated multiple-choice questions to sharpen your Chemistry knowledge and support exam preparation. Choose a topic below to get started.
1. |
Higher the viscosity, the slower the liquid flows. |
A. | True |
B. | False |
Answer» B. False | |
2. |
The surface tension of ___________ at critical temperature. |
A. | one |
B. | zero |
C. | two |
D. | three |
Answer» C. two | |
3. |
A water drop is spherical in shape due to ____________ |
A. | Viscosity |
B. | Poise |
C. | Surface tension |
D. | Reflection |
Answer» D. Reflection | |
4. |
If the angle of contact between the liquid and container is 90 degrees then? (C is the cohesive and A is the Adhesive force) |
A. | C > A |
B. | C = A |
C. | C < A |
D. | C is not equal to A |
E. | C > Ab) C = Ac) C < Ad) C is not equal to A |
Answer» C. C < A | |
5. |
What is S.I. unit of Surface Tension? |
A. | Dyne/meter |
B. | Newton-meter |
C. | Newton/meter |
D. | Dyne-meter |
Answer» D. Dyne-meter | |
6. |
Path in liquid in which layers do not meet each other is _______ |
A. | laminar flow |
B. | tubular flow |
C. | viscosity |
D. | straight path |
Answer» B. tubular flow | |
7. |
In a liquid, the force required to maintain the flow of layers is 5N, velocity gradient in du/dx, area of contact is 20m2. Then what is the value of viscosity? |
A. | 6.25 dz/du |
B. | 0.15 dz/du |
C. | 0.2 dz/du |
D. | 0.25 dz/du |
Answer» E. | |
8. |
Viscosity of liquid _________ with rise in temperature. |
A. | Increases |
B. | Decreases |
C. | Remains constant |
D. | Is independent |
Answer» B. Decreases | |
9. |
1 poise = ____________ |
A. | 0.1 kgm-1s-1 |
B. | 1 kgm-1s-1 |
C. | 10 kgm-1s-1 |
D. | 100 kgm-1s-1 |
Answer» B. 1 kgm-1s-1 | |
10. |
What is the boiling point at pressure 1 atm known as? |
A. | Standard boiling point |
B. | Normal boiling point |
C. | Van der Waal boiling point |
D. | Saturated boiling point |
Answer» D. Saturated boiling point | |