Question: Alcohol is used in manometer, because____________________?

• 1. its vapour pressure is low
• 2. it provides suitable meniscus for the inclined tube
• 3. its density is less
• 4. it provides longer length for a given pressure difference

Question: For manometer, a better liquid combination is one having ___________________?

• 1. higher surface tension
• 2. lower surface tension
• 3. surface tension is no criterion
• 4. high density and viscosity

Question: Units of surface tension are____________________?

• 1. energy/unit area
• 2. distance
• 3. both of the above
• 4. it has no units

Question: The value of the coefficient of compressibility for water at ordinary pressure and temperature in kg/cm is equal to_________________?

• 1. 1000
• 2. 2100
• 3. 2700
• 4. 21,000

Question: The bulk modulus of elasticity___________________?

• 1. has the dimensions of 1/pressure
• 2. increases with pressure
• 3. is large when fluid is more compressible
• 4. is independent of pressure and viscosity

Question: Viscosity of water in comparison to mercury is_________________?

• 1. higher
• 2. lower
• 3. same
• 4. higher/lower depending on temperature

Question: For very great pressures, viscosity of moss gases and liquids__________________?

• 1. remains same
• 2. increases
• 3. decreases
• 4. shows erratic behavior

Question: An object having 10 kg mass weighs 9.81kg on a spring balance. The value of ‘g’ at this place is _________________?

• 1. 10m/sec2
• 2. 9.81 m/sec2
• 3. 10.2/m sec
• 4. 9.75 m/sec2

Question: The normal stress in a fluid will be constant in all directions at a point only if__________________________?

• 1. it is incompressible
• 2. it has uniform viscosity
• 3. it has zero viscosity
• 4. it is at rest

Question: When the flow parameters at any given instant remain same at every point, then flow is said to be___________________?

• 1. quasi static
• 2. steady state
• 3. laminar
• 4. uniform