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
D. Sun
Explanation
Sun is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Composition and properties of matter
Explanation
Composition and properties of matter is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Parabolic concave
Explanation
Parabolic concave is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Temperature and luminosity
Explanation
Temperature and luminosity is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Eratosthenes
Explanation
Eratosthenes is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Ammonia
Explanation
Ammonia is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. O-
Explanation
People with type O- blood are called universal donors because their donated red blood cells have no A, B or Rh antigens and can therefore be safely given to people of any blood group.
Correct answer
E. Orion
Explanation
Orion is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Sound
Explanation
Sound is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Johannes Kepler
Explanation
Johannes Kepler is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.