Question : Cryogenics is:
Option 1: a scientific study of dust
Option 2: study of heat
Option 3: scientific study of very low temperatures
Option 4: study of genesis
Correct Answer: scientific study of very low temperatures
Solution : The correct answer is the scientific study of very low temperatures.
Cryogenics is the art of storing things at a very low temperature. It can also be inferred as the study of very low temperatures. It has various applications like refrigeration, preservation, rocket propulsion systems, etc. It also has a very critical role in the supply chain of perishable materials and medicines, which require storage at critical temperatures.
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Question : Directions: In the following question, arrange the following words as per their order in the dictionary. 1. Directorial 2. Directory 3. Directive 4. Directional
Option 1: 1, 3, 4, 2
Option 2: 3, 4, 2, 1
Option 3: 3, 4, 1, 2
Option 4: 4, 3, 1, 2
Question : If $a^2+b^2+1=2 a$, then the value of $a^4+b^7$ is:
Option 1: 1
Option 2: 0
Option 3: 2
Option 4: 4
Question : Match the following:
Monument Ruler
1. Agra Fort a. Sher Shah
2. Taj Mahal b. Akbar
3. Purana Quila c. Shah Jahan
Option 1: 1 - a, 2 - b, 3 - c
Option 2: 1 - b, 2 - c, 3 - a
Option 3: 1 - c, 2 - a, 3 - b
Option 4: 1 - c, 2 - b, 3 - a
Question : Which of the following is the method of heat transfer?
Option 1: Convection
Option 2: Evaporation
Option 3: Revolution
Option 4: Thermal Expansion
Question : What is the value of $\frac{(a^2+b^2)(a-b)-(a^3-b^3)}{a^2b-ab^2}?$
Option 1: 0
Option 2: 1
Option 3: –1
Option 4: 3
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