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. 400 grams
Explanation
A newborn baby’s brain weighs about 400 grams – a bit lighter than half a litre of milk, or about the same as four medium-sized rainbow lorikeets. By the time that baby reaches her teens, her brain now weighs about 1.4 – 1.5 kilograms: one whole extra litre of milk or a whopping nine or 10 extra lorikeets!
Correct answer
B. Biosphere
Explanation
Biosphere is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. periodicity of property
Explanation
periodicity of property is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Venus
Explanation
Venus is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Nitrogen + Oxygen
Explanation
Nitrogen + Oxygen is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Electrons
Explanation
Electrons is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
D. Fission reaction
Explanation
Fission reaction is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Magnetism
Explanation
Magnetism is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
C. Vitamins
Explanation
Vitamins is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.
Correct answer
B. Stratosphere
Explanation
Stratosphere is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.