1441Every Day ScienceMedium
Approximate age of sun is _________?
A4.6 billion years
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. 4.6 billion years
Explanation
4.6 billion years is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. 3000 C
Explanation
3000 C is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Exobiology
Explanation
Exobiology is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. ozone depletion
Explanation
ozone depletion is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
A. Bacterial
Explanation
Tuberculosis (TB) is a bacterial infection spread through inhaling tiny droplets from the coughs or sneezes of an infected person. It mainly affects the lungs, but it can affect any part of the body, including the tummy (abdomen), glands, bones and nervous system.
Correct answer
B. Brain
Explanation
Brain is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. All of Above
Explanation
Cyborg: A living organism that has restored function or enhanced abilities due to the integration of some artificial component or technology that relies on feedback.
Correct answer
D. Voyager 1
Explanation
Voyager 1 was the first spacecraft to cross the heliosphere, the boundary where the influences from outside our solar system are stronger than those from our Sun. Voyager 1 is the first human-made object to venture into interstellar space.
Correct answer
D. Rene Laennec
Explanation
The stethoscope was invented in France in 1816 by René Laennec at the Necker-Enfants Malades Hospital in Paris. It consisted of a wooden tube and was monaural. Laennec invented the stethoscope because he was not comfortable placing his ear directly onto a woman’s chest to listen to her heart.
Correct answer
B. It would decrease by a factor of 2sqrt{2}2
Explanation
It would decrease by a factor of 2sqrt{2}2 is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.