Every Day Science MCQs with Explanations

Explanation

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

Explanation

mixture of sand and naphthalene can be separated by “Sublimation”.

Explanation

The average adult dog has about a third more teeth than his human counterpart. Adult dogs have 42 permanent teeth compared to a measly 32 average human teeth (not counting any wisdom teeth. Those are “bonus.”). Puppies possess 28 baby teeth while human babies will have 20 deciduous or “baby” teeth.

Explanation

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

Explanation

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

Explanation

The equator passes through 13 countries : Ecuador, Colombia, Brazil, Sao Tome & Principe, Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya , Somalia, Maldives, Indonesia and Kiribati.

Explanation

The most common gas people breathe from clean air is nitrogen. Air is a mixture of gases, and the air on Earth contains about 78 percent nitrogen and about 21 percent oxygen. Argon, carbon dioxide neon, helium, methane, krypton, hydrogen and xenon are in much smaller amounts.

Explanation

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

Explanation

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