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
A. 33
Explanation
33 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. March 20 and September 23
Explanation
An equinox is commonly regarded as the instant of time when the plane (extended indefinitely in all directions) of Earth’s equator passes through the center of the Sun.[3] This occurs twice each year: around 20 March and 23 September. In other words, it is the moment at which the center of the visible Sun is directly above the Equator. The word is derived from the Latin aequinoctium, from aequus (equal) and nox (genitive noctis) (night). On the day of an equinox, daytime and nighttime are of approximately equal duration all over the planet.
Correct answer
C. Dmitry Ivanovsky
Explanation
Dmitry Ivanovsky is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Alkaline
Explanation
Alkaline is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. 18
Explanation
18 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Hubble
Explanation
Hubble is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Jupiter
Explanation
Jupiter is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Concave
Explanation
Concave is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Raymond Damadian
Explanation
Raymond Damadian is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Vitamin A
Explanation
Vitamin A is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.