Everyday Science — All MCQs

Correct Answer: B

The normal range of the number of white blood cells in a microliter of blood is between 4,500 and 10,000. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.

Correct Answer: A

The number of electrons of a neutral atom is automatically known if one knows the: Atomic number. This value follows from the standard definition or accepted conversion used for the quantity.

Correct Answer: B

The number of facial bones in a human body 14. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.

Correct Answer: C

The number of spark plugs needed in a diesel engine is 0. This value follows from the standard definition or accepted conversion used for the quantity.

Correct Answer: A

The oldest barrage on the river Indus at Sukkur was built in 1932. Its geographic position or physical characteristics account for the description given.

Correct Answer: A

The olfactory nerves affect what sense in brain: Smell. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.

Correct Answer: C

The only living cells in the body without blood supply is Cornea. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.

Correct Answer: B

The only non metal exists in liquid state is Bromine. Its composition and chemical or physical behavior give it the stated classification or property.

Correct Answer: A

The Oort cloud is estimated to be about 100,000 AU away from the sun. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.

Correct Answer: A

The optic nerve which is found in the human brain is also called Second cranial nerve. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.

Correct Answer: C

The outermost layer of skin is the epidermis. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: A

The outermost layer of the Earth is called Crust. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.

Correct Answer: C

The outermost layer of the sun is called Corona. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.

Correct Answer: A

The over-cooking of food should be avoided because Make the food difficult to digest. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: D

The owl can see most clearly in total darkness because: it has large eyes with orbs directed forward, giving it binocular sight. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: B

The ozone layer is at height of 20 to 30 kilometers from the surface of the Earth. Astronomical observations and measurements establish this relationship among the relevant celestial bodies.

Correct Answer: A

The pancreas secrets Insulin. This description follows from the defining characteristics and established facts associated with the subject.

Correct Answer: B

The part of brain involved in balance and precision in movements is: Cerebellum. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.

Correct Answer: D

The part of ear that is visible is called both A & B. The term is defined by the subject, process, or characteristic described in the question.

Correct Answer: B

The percentage of blood cells in the Blood of human body is 45%. This follows from the structure and normal physiological function of the relevant organ, tissue, or body system.