MCQs
Read every question, see the correct answer, and understand the explanation at your own pace. Study mode has no timer and no negative marking.
Correct answer
C. Dispersion of light
Explanation
Dispersion of light is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Lungs
Explanation
Lungs is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Edison
Explanation
Edison is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. 1%
Explanation
1% is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. 72 times
Explanation
72 times is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Pressure of air
Explanation
Air pressure has no effect at all in an ideal gas approximation. This is because pressure and density both contribute to sound velocity equally, and in an ideal gas the two effects cancel out, leaving only the effect of temperature.
Correct answer
B. Pluto, Eris, and Ceres
Explanation
Pluto, Eris, and Ceres is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Dobson
Explanation
The Dobson Unit is the most common unit for measuring ozone concentration.
Correct answer
A. Mass
Explanation
Mass is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Less than on Earth due to its lower mass and smaller radius
Explanation
Less than on Earth due to its lower mass and smaller radius is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.