1751Every Day ScienceMedium
The element common to all acids is:__________?
ACarbon
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
B. Hydrogen
Explanation
Hydrogen is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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C. 7 miles per sec
Explanation
7 miles per sec is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Energy
Explanation
BTU stands for British Thermal Unit, which is a unit of energy. It is commonly used to measure the amount of heat energy required to raise the temperature of one pound of water by one degree Fahrenheit. BTUs are frequently used in various applications, such as heating and cooling systems, to quantify the amount of energy transferred.
Correct answer
A. Geophysics
Explanation
Geophysics is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. Astronomical unit
Explanation
One AU, about 93 million miles (150 million kilometers), represents the average distance from the Sun to the Earth.
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C. Peristaltic
Explanation
Peristaltic is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
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D. Virus
Explanation
Hepatitis is primarily caused by viral infections, such as hepatitis A, B, C, D, and E viruses. Hepatitis can be caused by: Immune cells in the body attacking the liver. Infections from viruses (such as hepatitis A, hepatitis B, or hepatitis C), bacteria, or parasites. Liver damage from alcohol or poison.
Correct answer
C. protons and electrons; flows out from the sun
Explanation
protons and electrons; flows out from the sun is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Transistor
Explanation
Transistor is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Calcium Carbonate &Megnesium Carbonate
Explanation
Calcium Carbonate &Megnesium Carbonate is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.