MCQs
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Correct answer
C. Anaesthetics
Explanation
Anaesthetics is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Adiabatic demagneti-sation
Explanation
Magnetic refrigeration is a cooling technology based on the magneto-caloric effect. This technique can be used to attain extremely low temperatures, as well as the ranges used in common refrigerators, depending on the design of the system. The magnetocaloric effect (MCE, from magnet and calorie) is a magneto-thermodynamic phenomenon in which a change in temperature of a suitable material is caused by exposing the material to a changing magnetic field. This is also known by low temperature physicists as adiabatic demagnetization, due to the application of the process specifically to create a temperature drop.
Correct answer
D. Samuel Hahnemann
Explanation
Samuel Hahnemann is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Crust
Explanation
Earth’s outermost layer is called Crust. The other layers of the earth are the mantel, outer and inner core. Crust. The crust is the outermost layer of the Earth’s surface, where we live. The thickness ranges from 0 to 60 kilometres.
Correct answer
D. AIDS antibodies
Explanation
AIDS antibodies is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Hardness
Explanation
The Mohs Hardness Scale is used as a convenient way to help identify minerals. A mineral’s hardness is a measure of its relative resistance to scratching, measured by scratching the mineral against another substance of known hardness on the Mohs Hardness Scale.
Correct answer
B. every action there is an equal and opposite reaction .
Explanation
every action there is an equal and opposite reaction . is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. The sun will then expand into a red giant and possibly swallow the inner planets, including Earth
Explanation
The sun will then expand into a red giant and possibly swallow the inner planets, including Earth is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Both A and B
Explanation
Both A and B is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Plasma
Explanation
Plasma is the most abundant form of matter in the universe. It’s the most abundant state of matter in the universe, but plasma can’t exist for long under normal terrestrial conditions. Out in space, exotic plasmas can occur inside white dwarfs, large planets like Jupiter, and the Sun and other large stars.