Every Day Science MCQs with Explanations

Explanation

The correct answer is bifocal lens. Presbyopia is commonly caused due to aging that results in worsening vision ability on close objects.

Explanation

Fruits and Vegetables is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Light is a form of electromagnetic radiation that travels in waves and does not require a medium to propagate. Therefore, light is classified as an electromagnetic signal. Acoustic signals are sound waves, chemical signals involve chemical substances, and “neutral” is not a recognized signal type in this context.

Explanation

Zinc is used for galvanizing iron. Galvanization (or galvanizing as it is most commonly called in that industry) is the process of applying a protective zinc coating to steel or iron, to prevent rusting.

Explanation

29 km/sec is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

As we go higher in the atmosphere, atmospheric pressure drops and the air goes on getting thinner. That’s why mountain climbers sometimes need bottled oxygen to breathe. It becomes difficult to breath as the air is thinner.

Explanation

Milk is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

1.5 lac – 4.5 lac platelets per micro-liter of blood. is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Carbon is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.

Explanation

Sponges is the correct answer. Review the question and compare it with the other choices to remember this fact for future exams.