MCQOPTIONS
Saved Bookmarks
MCQOPTIONS
This section includes 157 Mcqs, each offering curated multiple-choice questions to sharpen your Chemical Engineering knowledge and support exam preparation. Choose a topic below to get started.
| 101. |
Calculate the approximate estimate of a four storey building, if the total plinth area is 300 square metres per floor and height of floor is 3 m. The cubical content rate is Rs. 2,000 per cubic metre and the profit of the contractor is 10% of the total cost. |
| A. | 2400000 |
| B. | 2640000 |
| C. | 7200000 |
| D. | 7920000 |
| Answer» E. | |
| 102. |
A closed tank contains 0.5 m thick layer of mercury (specific gravity = 13.6) at the bottom, A 2.0 m thick layer of water lies above the mercury layer. A 3.0 m thick layer of oil (specific gravity = 0.6) lies above the water layer. The space above the oil layer contains air under pressure. The gauge pressure at the bottom of the tank is 196.2 kN/m2. The density of water is 1000kg/m3 and the acceleration due to gravity is 9.81 m/s2. The value of pressure in the air space is |
| A. | 92.214 kN/m2 |
| B. | 95.644 kN/m2 |
| C. | 98.922 kN/m2 |
| D. | 99.321 kN/m2 |
| Answer» B. 95.644 kN/m2 | |
| 103. |
_____ pressure is measured with the help of a pressure measuring instrument in which the atmospheric pressure is taken as datum. |
| A. | Absolute |
| B. | Gauge |
| C. | Vacuum |
| D. | Negative |
| E. | Positive |
| Answer» C. Vacuum | |
| 104. |
Assuming constant temperature condition and air to be an ideal gas, the variation in atmospheric pressure with height calculated from fluid statics is |
| A. | linear |
| B. | exponential |
| C. | quadratic |
| D. | cubic |
| Answer» C. quadratic | |
| 105. |
At 100oC of temperature, 3.5 atm vapour pressure of water is equivalent to: |
| A. | 350.0000 kPa |
| B. | 312.9815 kPa |
| C. | 354.6375 kPa |
| D. | 304.2590 kPa |
| Answer» E. | |
| 106. |
A _______ is an instrument used for measuring small pressures, where accuracy is required. |
| A. | single column inclined manometer |
| B. | ammeter |
| C. | anemometer |
| D. | hygrometer |
| Answer» B. ammeter | |
| 107. |
A barometer reads 765 mm of Hg. The atmospheric pressure is: |
| A. | 0.51 bar |
| B. | 3.82 bar |
| C. | 7.65 bar |
| D. | 1.02 bar |
| Answer» E. | |
| 108. |
For a 30 degree cranked or bent up bar, the inclined length of the crank is equal to: |
| A. | d |
| B. | d/2 |
| C. | 2d |
| D. | 1.73d |
| Answer» D. 1.73d | |
| 109. |
In the method of measurement of earthwork in filling in foundation trench, the filling shall be measured and ______ of deduction will be made for settlement to arrive at the net quantities, in the case where quantity is measured in loose stacks or in carts or lorries.Fill in the blank choosing the correct answer from the options given below: |
| A. | 10% |
| B. | 5% |
| C. | 25% |
| D. | 45% |
| Answer» B. 5% | |
| 110. |
A hydraulic press has a ram of 300 mm diameter and a plunger of 45 mm diameter. When the force applied at the plunger is 50 N, the weight lifted by the hydraulic press will be nearly |
| A. | 2133 N |
| B. | 2223 N |
| C. | 2316 N |
| D. | 2406 N |
| Answer» C. 2316 N | |
| 111. |
Gauge pressure at a point is equal to _______. |
| A. | Absolute pressure - atmospheric pressure |
| B. | Vacuum pressure + absolute pressure |
| C. | Vacuum pressure - atmospheric pressure |
| D. | Absolute pressure + atmospheric pressure |
| Answer» B. Vacuum pressure + absolute pressure | |
| 112. |
For one cubic meter of cement concrete prop with stone chips 1 : 2 : 4, the required number of cement bags is: |
| A. | 4.54 |
| B. | 5.34 |
| C. | 6.34 |
| D. | 6.5 |
| Answer» D. 6.5 | |
| 113. |
If the atmospheric pressure is 1.03 kg / cm2 and the ultimate pressure is 1.05 kg / cm2 at a point, what will be the gauge pressure at that point? |
| A. | 20 kg / cm2 |
| B. | 2.08 kg / cm2 |
| C. | 0.02 kg / cm2 |
| D. | 1.05 kg / cm2 |
| Answer» D. 1.05 kg / cm2 | |
| 114. |
Identify the work in which the units of measurement for estimation of quantities are NOT identical.E. Turfing of bunds of a canalF. Wood work for door shuttersG. White washingH. Well sinking |
| A. | G |
| B. | H |
| C. | F |
| D. | E |
| Answer» C. F | |
| 115. |
If the length of 16 mm diameter bar is 10 m, then its weight is _____ |
| A. | 16.5 kg |
| B. | 16.9 kg |
| C. | 15.8 kg |
| D. | 16.2 kg |
| Answer» D. 16.2 kg | |
| 116. |
Due to change is price level, a revised estimate is prepared if the sanctioned estimate exceeds |
| A. | 2.0% |
| B. | 2.5% |
| C. | 4.0% |
| D. | 5.0% |
| Answer» E. | |
| 117. |
A manometer measures the pressure differential between two locations of a pipe carrying water. If the manometric liquid is mercury (specific gravity 13.6) and the manometer showed a level difference of 20 cm, then the pressure head difference of water between the two tapings will be |
| A. | 1.26 m |
| B. | 2.72 m |
| C. | 1.36 m |
| D. | 2.52 m |
| Answer» E. | |
| 118. |
Estimate the quantity of plastering (two faces) for 4 m long, 3 m high and 30 cm thick wall. |
| A. | 36 cum |
| B. | 2.4 sqm |
| C. | 24 sqm |
| D. | 72 cum |
| Answer» D. 72 cum | |
| 119. |
A differential manometer as shown in the figure below is used to measure the difference in pressure at points A and B in terms of the specific weight of water, w. The specific gravities of the liquids X, Y and Z are respectively S1, S2, and S3.The correct difference \(\left( {\frac{{{p_A}}}{w} - \frac{{{p_B}}}{w}} \right)\) is given by |
| A. | h3S2 – h1S1 + h2S3 |
| B. | h1S1 + h2S3 – h3S2 |
| C. | h3S1 – h1S2 + h2S3 |
| D. | h1S1 + h2S2 – h3S3 |
| Answer» B. h1S1 + h2S3 – h3S2 | |
| 120. |
A penstock pipe of 10 m diameter carries water under a pressure head of 100 m. If the wall thickness is 9 mm, what is the tensile stress in the pipe wall in MPa? |
| A. | 2725 |
| B. | 545.0 |
| C. | 272.5 |
| D. | 1090 |
| Answer» C. 272.5 | |
| 121. |
Grouting of the cracks is measured in _____. |
| A. | cubic metre |
| B. | metre |
| C. | number |
| D. | square metre |
| Answer» C. number | |
| 122. |
Estimate the quantity of concrete required for a 175 mm thick RCC slab over a room of external dimension 4 m × 5 m (including 30 cm wall thickness). Consider 0.2 m projection of slab all around the room. |
| A. | 5.875 m3 |
| B. | 3.452 m3 |
| C. | 4.158 m3 |
| D. | 7.656 m3 |
| Answer» D. 7.656 m3 | |
| 123. |
As per Pascal’s law: |
| A. | intensity of pressure at a point in a moving fluid is equal in the direction of applied force. |
| B. | intensity of pressure at a point in a static fluid is equal in all directions. |
| C. | intensity of pressure at a point in a moving fluid is equal in all directions |
| D. | intensity of pressure at a point in a static fluid is equal in the direction of applied force. |
| Answer» C. intensity of pressure at a point in a moving fluid is equal in all directions | |
| 124. |
At sea level, under normal conditions, what is the atmospheric pressure? |
| A. | 101.32 kPa |
| B. | 100.043 kPa |
| C. | 100.1 kPa |
| D. | 104.013 kPa |
| Answer» B. 100.043 kPa | |
| 125. |
A vacuum gauge fixed on steam condenser reads 80 kPa vacuum. The barometer indicates 1.013 bar. The absolute pressure in terms of mercury head is, nearly |
| A. | 160 mm of Hg |
| B. | 190 mm of Hg |
| C. | 380 mm of Hg |
| D. | 760 mm of Hg |
| Answer» B. 190 mm of Hg | |
| 126. |
A manometer is used to measure the pressure of a gas in a tank. The fluid used has a specific gravity of 0.85 and the manometer column height is 55 cm, as shown in figure. If the local atmospheric pressure is 96 kPa, what is the absolute pressure in the tank? |
| A. | 4.6 kPa |
| B. | 98.6 kPa |
| C. | 100.6 kPa |
| D. | 200 kPa |
| Answer» D. 200 kPa | |
| 127. |
Given that: Specific gravity of mercury = 13.6; intensity of pressure = 40 kPaExpress the intensity of pressure (gauge) in various units (S.I) |
| A. | 0.3 bar, 3.077 m of water, 0.15 m of mercury |
| B. | 0.4 bar, 4.077 m of water, 0.299 m of mercury |
| C. | 0.5 bar, 5.077 m of water, 0.339 m of mercury |
| D. | None of the above |
| Answer» C. 0.5 bar, 5.077 m of water, 0.339 m of mercury | |
| 128. |
A vacuum gauge connected to a chamber reads 40 kPa. Atmospheric pressure at the location is 100 kPa. Then, the absolute pressure in the chamber is |
| A. | 40 kPa |
| B. | 160 kPa |
| C. | 60 kPa |
| D. | None of these |
| Answer» D. None of these | |
| 129. |
A glass tub of 2.5 mm internal diameter is immersed in oil of mass density 940 kg/m3 to a depth of 9 mm. If a pressure of 148 N/m2 is needed to form a bubble which is just released, what is the surface tension of the oil? |
| A. | 0.041 N/m |
| B. | 0.043 N/m |
| C. | 0.046 N/m |
| D. | 0.050 N/m |
| Answer» B. 0.043 N/m | |
| 130. |
For calculation of earth work, the free lift allowed is |
| A. | 2 m |
| B. | 2.5 m |
| C. | 1 m |
| D. | 1.5 m |
| Answer» E. | |
| 131. |
A mercury manometer used for measuring pressure difference indicates 50 cm head of Hg. This pressure difference, in meters of water, will be |
| A. | 0.63 m |
| B. | 6.3 m |
| C. | 6.8 m |
| D. | 0.68 m |
| Answer» D. 0.68 m | |
| 132. |
A hydraulic press has a ram of 20 cm diameter and a plunger of 3 cm diameter. It is used for lifting a weight of 30 kN. Find the force required at the plunger. |
| A. | 975 N |
| B. | 1075 N |
| C. | 875 N |
| D. | 675 N |
| Answer» E. | |
| 133. |
A U-tube manometer is connected to a pipeline conveying water as shown in the figure below.The pressure head of water in the pipeline is |
| A. | 7.12 m |
| B. | 5.56 m |
| C. | 6.0 m |
| D. | 5.12 m |
| Answer» D. 5.12 m | |
| 134. |
A_HYDRAULIC_LEVER_HAS_INPUT_SURFACE_AREA_2_M2,_AND_OUTPUT_SURFACE_AREA_10_M2,_IF_THE_INPUT_FORCE_IS_5_N,_THEN_WHAT_IS_THE_OUTPUT_FORCE??$ |
| A. | 1 N |
| B. | 2 N |
| C. | 5 N |
| D. | 10 N |
| Answer» B. 2 N | |
| 135. |
THE_TIME_REQUIRED_FOR_THE_OUTPUT_OF_A_TRANSDUCER_TO_RISE_TO_63.2%_OF_ITS_FINAL_VALUE_AS_A_RESULT_OF_A_STEP_CHANGE_IN_THE_MEASURAND_IS_CALLED?$ |
| A. | zero drift |
| B. | threshold |
| C. | time constant |
| D. | none of the mentioned |
| Answer» D. none of the mentioned | |
| 136. |
Archimedes’ principle describes which of the following quantities?$# |
| A. | Pressure |
| B. | Buoyancy |
| C. | Velocity |
| D. | Mass |
| Answer» C. Velocity | |
| 137. |
A Closed U-tube manometer has a gas at one end and vacuum at other end, if the height difference of the liquid (density = 10 kg/m3) in the manometer in 5 cm, what is the pressure of the gas?$ |
| A. | 10 N/m<sup>2</sup> |
| B. | 5 N/m<sup>2</sup> |
| C. | 2.5 N/m<sup>2</sup> |
| D. | 1 N/m<sup>2</sup> |
| Answer» C. 2.5 N/m<sup>2</sup> | |
| 138. |
An_excitation_and_amplification_system_for_use_with_transducers_is_termed_as$ |
| A. | signal controlling |
| B. | threshold |
| C. | time constant |
| D. | none of the mentioned |
| Answer» B. threshold | |
| 139. |
A closed end manometer is filled with a gas on one end and other end is close with vacuum, height difference of liquid (density = 10000 Kg/m3) 25 cm, what is the pressure of gas? |
| A. | 0.1 atm |
| B. | 0.24 atm |
| C. | 0.36 atm |
| D. | 0.9 atm |
| Answer» C. 0.36 atm | |
| 140. |
An open end manometer is filled with a gas on one end and other end is open to atmosphere with height difference of liquid (density = 10000 Kg/m3) 10 cm, what is the pressure of gas? |
| A. | 1 atm |
| B. | 1.1 atm |
| C. | 1.2 atm |
| D. | 1.3 atm |
| Answer» C. 1.2 atm | |
| 141. |
An object is dipped in water, if the weight of the object measured by spring balance is 10 g and buoyancy force acting on the object is 0.1 N then what is the actual mass of the object? |
| A. | 10 g |
| B. | 20 g |
| C. | 30 g |
| D. | 40 g |
| Answer» C. 30 g | |
| 142. |
What is the pressure difference of the ends of a U-tube manometer filled with liquid (density = 10 kg/m3) the difference in the height of the liquid in the tubes is 5 cm? |
| A. | 5 N/m<sup>2</sup> |
| B. | 10 N/m<sup>2</sup> |
| C. | 15 N/m<sup>2</sup> |
| D. | 20 N/m<sup>2</sup> |
| Answer» B. 10 N/m<sup>2</sup> | |
| 143. |
______________ is the smallest change in the measurand that produces a detectable change in the transducer output? |
| A. | Zero drift |
| B. | Threshold |
| C. | Linearity |
| D. | None of the mentioned |
| Answer» C. Linearity | |
| 144. |
Bernoulli’s Equation is the conservation of?$ |
| A. | Energy |
| B. | Momentum |
| C. | Pressure |
| D. | Mass |
| Answer» B. Momentum | |
| 145. |
_____________ is a device which provides a usable output in response to a specified measurand. |
| A. | Zero drift |
| B. | Transducer |
| C. | Linearity |
| D. | None of the mentioned |
| Answer» C. Linearity | |
| 146. |
Which of the following is not a pressure measuring device? |
| A. | Manometer |
| B. | Barometer |
| C. | Galvanometer |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 147. |
_____________ is the period of time, starting with the application of power to the measuring device, required to assure that it will perform within specified tolerance. |
| A. | Overload |
| B. | Zerodrift |
| C. | Warm up period |
| D. | None of the mentioned |
| Answer» D. None of the mentioned | |
| 148. |
10 mm of water (density = 1000 kg/m3) and 5 mm of a liquid has the same pressure drop, what is the density of liquid? |
| A. | 500 kg/m<sup>3</sup> |
| B. | 1000 kg/m<sup>3</sup> |
| C. | 1500 kg/m<sup>3</sup> |
| D. | 2000 kg/m<sup>3</sup> |
| Answer» E. | |
| 149. |
A change in output over a specified period of time at specified ambient conditions with input held constant is called |
| A. | overload |
| B. | zero drift |
| C. | warm up period |
| D. | none of the mentioned |
| Answer» C. warm up period | |
| 150. |
An open tank 10 m deep is completely filled with a liquid of density 5 kg/m3, what is the pressure difference at the top and bottom? |
| A. | 100 N/m<sup>2</sup> |
| B. | 250 N/m<sup>2</sup> |
| C. | 500 N/m<sup>2</sup> |
| D. | 1000 N/m<sup>2</sup> |
| Answer» D. 1000 N/m<sup>2</sup> | |