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The operating velocity in the absorption tower is usually 40-50% of the flooding velocity. Packed absorption towers are normally designed for a pressure drop of about __________ mm of water column per metre height of packing.
Consider the following Column A and Column B in which the names of microorganisms are given in Column A and the groups to which they belong are given in Column B: Column A Column B (a) Aspergillus (i) Algae (b) Lactobacillus (ii) Bacteria (c) Paramecium (iii) Fungi (d) Spirogyra (iv) Protozoa   (v) Virus The correct match of the items of Column A with that of Column B is
Match the following in Column X with Column Y: Column X Column Y  P. In a triaxial compression test, with increase of axial strain in loose sand under drained shear condition, the volumetric strain  I. decreases  Q. In a triaxial compression test, with increase of axial strain in loose sand under undrained shear condition, the excess pore water pressure  II. Increase  R. In a triaxial compression test, the pore pressure parameter “B” for a saturated soil  III. remains same  S. For shallow strip footing in pure saturated clay, Terzaghi’s bearing capacity factor (Nq) due to surcharge  IV. is always 0.0.      V. is always 1.0.      VI. is always 0.5. Which one of the following combinations is correct?
Given that both liquid A and liquid B exert the same amount of pressure, what would be the height of column of liquid A if the density of liquid A is twice the density of liquid B and the height of column of liquid B is 10 cm?
At the same gas flow rate, the pressure drop in a packed tower being irrigated with liquid __________ that in dry packed tower.
Consider the following statements for Euler’s equation to find the critical load of a column : 1. Critical load of a column is proportional to the flexural rigidity. 2. Critical load of a column depends upon yield stress. 3. Critical load of a column is inversely proportional to the length of the column. 4. Critical load of a column is inversely proportional to the square of the length of the column. Which of the above statements are correct?
A gas (density = 1.5 kg/m3, viscosity = 2 × 10-5 kg/m.s) flowing through a packed bed (particle size = 0.5 cm, porosity = 0.5) at a superficial velocity of 2 m/s causes a pressure drop of 8400 Pa/m. The pressure drop for another gas, with density of 1.5 kg/m3 and viscosity of 3 × 10-5 kg/m.s flowing at 3 m/s will be
In the following question, two columns are given containing three phrases each. In the first column phrases are A, B, and C and in the second column, the phrases are D, E, and F. A phrase from the first column may or may not connect with phrase from the second column to make grammatically and contextually correct sentence. There are five options, four of which display the sequence(s) in which the phrases can be joined to form a grammatically and contextually correct sentence. If none of the options forms a correct sentence after combination, select ‘None of these’ as your answer. Column 1 Column 2  A. A cable car taking visitors to a mountaintop view of some of northern Italy’s    D. relatively rare but doctors suspect that the sudden increase in the infection could further complicate India’s fight against the pandemic.  B. Scientists have unearthed a 43-million-year-old fossil of an extinct  E. products claiming to be cures and preventions are on the rise.  C. China reopened a key terminal at the world's third-busiest cargo, after a shutdown to  F. four-legged whale that once lived both on land and in the sea, making it amphibious.
In the following question, two columns are given containing three phrases each. The phrases are labelled A, B, and C in the first column and D, E and F in the second column. A phrase from the first column may or may not connect with a phrase in the second column to make a grammatically and contextually meaningful sentence. Identify the correct option from those given below that gives the correct sequence in which one or more sentences can be formed. If none of the options makes it possible for a meaningful sentence to be formed, indicate 'No of these' as your answer. Column 1 Column 2 A. A new technology developed by Indian scientists for ecological restoration is helping  D. could sense light, moisture, gravity, pressure and possessed several other qualities B. As early as in 1880, Charles Darwin demonstrated that plants  E. moisture contrasts known as weather fronts C. The major cause of rain production is moisture moving along three-dimensional zones of temperature and  F. in revival of mangroves degraded due to rising sea levels.  
In the following question, two columns are given containing three phrases each. In the first column phrases are A, B, and C and in the second column, the phrases are D, E, and F. A phrase from the first column may or may not connect with phrase from the second column to make grammatically and contextually correct sentence. There are five options, four of which display the sequence(s) in which the phrases can be joined to form a grammatically and contextually correct sentence. If none of the options forms a correct sentence after combination, select ‘None of these’ as your answer. Column 1 Column 2 A. ‘OxyContin’ maker Purdue Pharma LP won court approval of a $4.5 billion bankruptcy settlement that shields its owners from D. gross electricity production of about 24% is far higher than those of all other renewable energy sources.  B. The latest GDP estimates expectedly show that the national output rebounded in the first quarter of the current fiscal from the E. record contraction in April-June 2020 when the pandemic’s onset and the lockdown gutted the economy. C. Wind energy is of outstanding importance to the energy transition in Germany, and its share in F. lawsuits accusing them of contributing to the nation’s opioid epidemic in exchange for providing funding to combat the crisis.