Technical MCQs

1. Wetted wall tower experiment is generally used to determine: (A) Mass transfer co-efficient (B) Molal diffusivity (C) Volumetric co-efficient (D) None of the above 2. Lewis number (Le) is basically: (A) Sh Pr (B) St Sh (C) Pr St (D) Sc Pr 3. Stacked packing as compared to dumped packing: (A) Gives lower pressure drop (B) Provides poorer contact between the fluids (C) Gives higher pressure drop (D) Both A and B 4. In which case tower is most severe: (A) In dumped packing of regular units (B) At a very high liquid flow rate (C) In towers packed randomly with crushed (D) In towers packed with stacked packing 5. Flooding usually results in: (A) High gas velocity (B) Good contact between the fluids (C) Low tray efficiency (D) High tray efficiency 6. In a packed tower the operating velocity is usually……….the flooding velocity: (A) Twice (B) Equal to (C) More than (D) Half 7. When the gas flow rate is the same, the pressure drop in a packed tower being irrigated with liquid………that in the d

1. What does mean by review: (A) Assessment (B) Critical Evaluation (C) Evaluation (D) Guess 2. Deductive method is basically a method of teaching: (A) Poetry (B) Prose (C) Grammar (D) Spelling 3. Skimming in language learning is basically: (A) Running eyes quickly over the text (B) Reading quickly to find what it is about (C) Reading quickly (D) Taking off the cream from milk 4. According to ALM, language is basically a set of: (A) Habits (B) Structural words (C) Sentences (D) Words 5. Meaning of perception: (A) Cramming (B) Fluency (C) Redundancy (D) Ability to recognize 6. Meaning of substitution: (A) Addition (B) Institution (C) Replacement (D) Completion 7. Meaning of redundancy: (A) To ignore (B) Fluency (C) Anticipation (D) Predication 8. The old style of paragraph writing is: (A) Skimming   (B) Prediction (C) Orthography (D) Scanning 9. Which is the post-reading activity? (A) Scanning (B) Skimming (C) Introduction (D) Follow up 10. Grammar translation method is also known as: (

1. In the air the maximum adiabatic flame temperature as compared to that in pure oxygen is: (A) Same (B) Much higher (C) Much lower (D) Depends on the type 2. Generally preheating of-----------the flame temperature: (A) Combustion air decreases (B) The gaseous fuel before combustion decreases (C) Either the fuel or the air does not effect (D) Either the fuel or the air both increases 3. When a fuel consists of carbon and carbon mono oxide is burnt in pure oxygen at constant pressure, its gross calorific value as compared to net calorific value will be: (A) Same (B) Cannot predict (C) More (D) Less 4. In fuels when the calorific value increases, their adiabatic flame temperatures: (A) Remains unchanged (B) Increase (C) Depends upon the quantity of products of combustion (D) Decrease 5. In the case of coal the grind ability index is 100. It implies that the: (A) Coal can be easily pulverized (B) Coal can be pulverized with great difficulty (C) Coal cannot be pulverized (D) None of the a

1. Which material of construction of pressure mills is used for squeezing out the juice from sugar cane? (A) Cast iron (B) Monel (C) Mild steel (D) Stainless steel 2. In photochemical reactor chlorination of benzene is done to produce benzene hexachloride, lined with: (A) Led or glass (B) PVC (C) Fireclay (D) Karbate 3. Polymerization reactor which is used for the production of styrene-butadiene rubber is made of: (A) Wrought iron (B) Karbate (C) Stainless steel or glass-lined vessel (D) Cast iron 4. from the following which is the most suitable material of construction for the evaporator and its tubes for concentrating NaOH solution to 70%? (A) Nickel (B) Karbate (C) Steel (D) Cast iron 5. the most common stainless steel type 316 that is highly resistant to corrosion contains: (A) 20-22% Cr, and 8-10% Ni (B) 2-4% Cr, 22% Ni and 2-4% Mo. (C)  6-13% Cr, 10-14% Ni and 2-3 % Mo. (D) None of the above 6. To store caustic soda which drum is used? (A) Brass (B) Gunmetal (C) Steel (D) Cast ir

1. Which is an extensive property of a system: (A) Pressure (B) Heat capacity (C) Concentration (D) Molal heat capacity 2. For an ideal gas the activity is numerically------its pressure: (A) Equal to (B) More than (C) Data insufficient, cannot be predicted  (D) Less than 3. Generally the maximum work that could be secured by expanding the gas over a given pressure range is the---------work: (A) Adiabatic (B) Isothermal (C) Isentropic (D) None of the above 4. The temperature at which both liquid and gas phases are identical is basically called the--------point: (A) Freezing (B) Triple (C) Boiling (D) Critical 5. For a reaction, the equilibrium constant varies with the: (A) Pressure (B) Temperature (C) Initial concentration of the reactant (D) None of the above 6. The value of activity coefficient for an ideal solution is: (A) Greater than 1 (B) Less than 1 (C) 1 (D) 0 7. For a substance the Fugacity coefficient is the ratio of its fugacity to: (A) Activity (B) Activity co-efficient (C)