2041Every Day ScienceMedium
The bodyguard of the Earth is __________ that save the Earth from many Comets and Asteroids.
ASaturn
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. 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
D. Effects tides of the ocean
Explanation
Effects tides of the ocean is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Washing soda
Explanation
Sodium carbonate, Na2CO3, is also known as washing soda. It can remove temporary and permanent hardness from water. Sodium carbonate is soluble but calcium carbonate and magnesium carbonate are insoluble.
Correct answer
C. Concave lens
Explanation
Concave lens is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Atoms
Explanation
Atoms is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Mars and Jupiter
Explanation
Mars and Jupiter is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. more than 1200 times
Explanation
more than 1200 times is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Neutrons
Explanation
Neutrons is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Washing Soda
Explanation
Washing Soda is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Loss of Electrons
Explanation
Loss of Electrons is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.