Which of the following statements is/are true?
- Hagen-Poiseuille's law is used for calculation of molecular diffusion
- Fick's law is used for calculation of energy requirement in size reduction
- Rittinger's law is used for calculation of energy requirement in size reduction
- Stokes law is used for derivation of terminal velocity
The Correct Option is C, D
Solution and Explanation
Top Questions on Mass and Energy Balances Including Multiphase
- Match the plant products in Group 1 with the plant species in Group 2 that produce them and the respective plant parts in Group 3 where they accumulate the most.
Group 1 Group 2 (P) Net primary productivity (i) Total amount of produced by autotrophs energy (Q) Gross primary productivity (ii) A type of mutualism where one species is benefitted more than the other (R) Net productivity (iii) Amount of energy stored by autotrophs after respiration (S) Secondary productivity (iv) Unused amount of energy after consumption by heterotrophs - GATE XL - 2024
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- Mass and Energy Balances Including Multiphase
Questions Asked in GATE XL exam
An electricity utility company charges ₹7 per kWh. If a 40-watt desk light is left on for 10 hours each night for 180 days, what would be the cost of energy consumption? If the desk light is on for 2 more hours each night for the 180 days, what would be the percentage-increase in the cost of energy consumption?
The \( F_{121} \) value of a known microorganism with \( Z \) value of \( 11^\circ C \) is 2.4 min for 99.9999% inactivation. For a 12D inactivation of the said microorganism at \( 143^\circ C \), the \( F \) value (in min) is .......... (rounded off to 3 decimal places)
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- Consider a five-digit number PQRST that has distinct digits P, Q, R, S, and T, and satisfies the following conditions:
1. \( P<Q \)
2. \( S>P>T \)
3. \( R<T \)
If integers 1 through 5 are used to construct such a number, the value of P is:- GATE ST - 2025
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- mathematical reasoning
Three villages P, Q, and R are located in such a way that the distance PQ = 13 km, QR = 14 km, and RP = 15 km, as shown in the figure. A straight road joins Q and R. It is proposed to connect P to this road QR by constructing another road. What is the minimum possible length (in km) of this connecting road?
Note: The figure shown is representative.
- A business person buys potatoes of two different varieties P and Q, mixes them in a certain ratio and sells them at ₹192 per kg.
The cost of the variety P is ₹800 for 5 kg.
The cost of the variety Q is ₹800 for 4 kg.
If the person gets 8% profit, what is the P : Q ratio (by weight)?