The activation energy of creep for a pure metal at high temperature is equal to activation energy of _____________

The activation energy of creep for a pure metal at high temperature is equal to activation energy of _____________ Correct Answer self-diffusion

The extensive correlation of creep and diffusion data of pure metal shows that their activation energy for high-temperature creep is equal to the value of self-diffusion of atoms of the same metal in the crystal lattice.
Bissoy MCQ

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Study the following statements regarding creep.
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ii) Creep in new rails is more than that in old rails
iii) Creep is more on steep gradients than on level track
The correct answer is
The steady-state creep activation energy is given by the Arrhenius type rate equation ε = Ae-(Q/RT), where, Q = activation for rate-controlling step A = pre-exponent complex constant containing the frequency of vibration of the flow unit T = absolute temperature R = Universal gas constant The slope of the equation for log ε vs. log T plot will be equal to __________
Given that, 24 carat gold is pure gold, 18 carat gold is 3/4th of pure gold and 20 carat gold is 5/6th of pure gold, the ratio of the pure gold in 18 carat gold to the pure gold in 20 carat gold is -
20 L of pure water was added to a vessel containing 80 L of pure milk. 36 L of the resultant mixture was then sold and some more pure milk and pure water was added to the vessel in the respective ratio of 7 : 2. If the final quantity of water was 3 liters less than the initial quantity of water in the vessel, what was the quantity of pure milk that was added to the vessel? (in liters)
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