Chemical Engineering Basics

731. Venturimeter is used to measure the flow rate of fluids in pipes, when the pipe is in __________ position.

1. Horizontal
2. Vertical
3. Inclined
4. Any

View answer

732. Vernier calipers cannot be used to measure the

1. I.D. & O.D. of the shaft
2. Thickness of parts
3. Depth of holes
4. Clearance between two mating surfaces

View answer

733. Vibration upto 100 kilo hertz can be most accurately measured by a __________ type accelerometer.

1. Preloaded spring
2. Piezoelectric
3. Bonded strain gauge
4. None of these

View answer

734. Viscoelastic behaviour is observed in __________ materials.

1. Non-crystalline organic polymeric
2. Ceramic
3. All crystalline
4. All amorphous

View answer

735. Volume of blast furnace slag is about __________ times the volume of hot metal (pig iron) of the same weight

1. 1.5
2. 3
3. 5
4. 7

View answer

736. Volumetric composition of flue gas analysed with the Orsat apparatus is : CO₂ = 12%, O₂ = 8%, CO = nil, N₂ = 80%. This flue gas composition indicates that

1. Pure oxygen has been used for combustion
2. Nitrogen percentage in the fuel is very high
3. Excess air has been used for combustion
4. Hydrogen is not present in the fuel

View answer

737. Water flow in the river during flood can be categorised as the __________ flow.

1. Unsteady uniform
2. Unsteady non-uniform
3. Steady uniform
4. Steady non-uniform

View answer

738. Water hammer is caused in steam carrying pipelines, because of

1. Partial condensation of steam
2. Vibration of the pipeline
3. High degree of superheat of steam
4. Its exposure to torrential rain

View answer

739. Water-tube boiler is the one, in which

1. Water passes through tubes and flue gases around it
2. Tube carrying hot flue gases are immersed in a pool of water
3. Tubes are placed in vertical position
4. None of these

View answer

740. Wave length of X-rays is about 1 angstrom; however it cannot pass through a sheet of

1. Paper
2. Cloth
3. Lead
4. Aluminium

View answer