Best gtu mcq mock test for general properties of matter| mcq for physics |concepts note book pdf download
Applied Physics Chapter General properties of matter (Q&A)
1.The force between glass and water molecule is called ___________
Answer: adhesive
2. the ratio of longitudinal stress to to the longitudinal strain is called _______
Answer: Young Modulus
3. As the temperature increase the surface tension of the liquid
Answer:decreases
4. what is the unit of modulus of elasticity?
Answer:
5. the unit of stress is same as the unit of
Answer: N/m²
6. the viscosity of the fluid______with the rise in temperature.
Answer: decreases
7. if the angle of contact of the the liquid is > 90° the liquid will in the capillary tube.
Answer:
8. By which reason the drop of liquid is spherical ?
Answer: Surface tension
9. The unit of coefficient of viscosity is
Answer:poise
10. The fluid velocity at which the stream line flow just changes into turbulent flow is called________
Answer: critical velocity
11. A rope 1 cm in diameter break if the tension in it exceeds 500 N. The maximum tension that may be given to a similar rope of diameter 2 cm.
Answer: 2000 N
12. The breaking stress of wire depends on________
Answer: Material of the wire
13. When Reynold’s number is less than 2000, the flow of the fluid is _______
Answer: Laminar flow
14. The dimensions ML⁻¹T⁻² can correspond to ________
Answer: Modules of elasticity
15. With increase in temperature the value of surface tension __________
Answer: decreases
16. Surface tension tends to _______ surface area of the liquid.
Answer: minimize
17. Force of attraction between glass and water molecule is called _______
Answer: Adhesive
18. The angle of contact θ for liquid which does not wet glass surface is _________
Answer: > 90
19 S.I unit of surface tension is _________
Answer: Newton per Meter(N/m)
20. Cohesive forces are maximum for ________
Answer : Solids
21. The shape of the meniscus for the liquid which wet the surface is ______________
Answer: Concave
22. The temperature at which surface tension of liquid reduce to zero is called ___________ temperature
Answer: Critical
23. Surface tension of mercury is 470 C.G.S unit its value in S.I_________newton/meter.
Answer: 4.7
24. Angle of contact for glass and water is_______ degree.
Answer: 0
25. The spherical shape of a rain drop is due to __________
Answer: surface tension
26. 70 dyne/cm = ________ N/m
Answer: 0.070
27. With increase in temperature surface tension remain.
Answer: decreases
28. Formula of stress ________
Answer: Force/Area
29. The matter is made ______
Answer: molecule
30. Which is right for Stoke's law
Answer: Fᵥ = σπηrv
31.which is right for Hooke's law :
Answer: stress portional strain
32. Hook's law is valid for every small ______
Answer: strain
33. Molecular range
Answer: 10⁻⁹ m
34.Unit of strain is _____
Answer: No unit (dimensionless)
35.Flow of water coming out from waterfall is an example of______
Answer: laminar flow
36.CGS unit of surface tension is _________
Answer: dyne per centimetre(dyne/cm)
37.If the length of the wire and mass suspended are doubled in a young’s modulus experiment then, young’s modulus of the wire will be ______
Answer: Remains unchanged
38.Length of a wire is 5 cm, force applied on it is 8 N, change in length of it 0.2cm. _______ is the strain produced in wire.
Answer:
strain = change in length/ original length.
= 0.2/5
= 0.04
39.Liquids like honey and castor oil cannot flow easily because
Answer: Viscosity
40. If Reynold’s number for a liquid is 4000. Its flow is called
Answer: Turbulent flow
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Very helpful 😄
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