All Free Everyday Science MCQs with Answers

1391. Tocopherol is the chemical name of which vitamin?

• A. vitamin C
• B. vitamin D
• C. vitamin A
• D. vitamin E

Explanation: Tocopherol is the collective chemical name for vitamin E, a fat-soluble antioxidant that helps protect cell membranes. Vitamin C is also an antioxidant, but it is ascorbic acid.

1392. What is the name of the biggest part of human brain?

• A. Cerebellum
• B. Cerebrum
• C. Brainstem
• D. Pituitary

Explanation: The cerebrum is the largest brain region and controls higher functions such as thought, memory, language and voluntary movement. The cerebellum mainly coordinates balance and fine movement.

1393. The psychological test of human emotions and personality, using inkblots, is formally known as what?

• A. Rorschach
• B. Nervous
• C. Renal
• D. All of above
• E. None of these

Explanation: The Rorschach test presents inkblot images and interprets a person's responses as clues about personality and emotional functioning. The other terms are unrelated descriptive words, not names of this test.

1394. What is the rarest blood type in humans?

• A. O-
• B. O+
• C. AB+
• D. AB-

Explanation: Among the eight commonly taught ABO and Rh blood groups, AB-negative is the rarest. Rarity can vary by population, and very unusual types such as Rh-null are not included in these options.

1395. When we sleeps blood pressure_____________?

• A. Increases
• B. Decreases
• C. Remain constant
• D. None of these

Explanation: Blood pressure normally falls during sleep because the autonomic nervous system reduces heart rate and vascular activity. This normal nighttime fall is called the dipping pattern, although some people do not show it.

1396. Oncology is the Study of__________?

• A. Onions
• B. Origins
• C. Cancer
• D. Diseases

Explanation: Oncology is the branch of medicine concerned with cancer, including its diagnosis, treatment and prevention. The word is derived from Greek roots referring to a swelling or tumour.

1397. What do you understand by disease "Insomnia"?

• A. Color blindness
• B. Depression
• C. Hypertension
• D. Inability to sleep

Explanation: Insomnia is persistent difficulty falling asleep, staying asleep or obtaining restorative sleep. It is not the same as depression, hypertension or colour blindness, although it can occur alongside those conditions.

1398. Frog Heart has how many chambers?

• A. 2
• B. 3
• C. 4
• D. 5

Explanation: A frog has a three-chambered heart: two atria and one ventricle. The single ventricle allows some mixing of oxygenated and deoxygenated blood, unlike the four-chambered mammalian heart.

1399. Which Part of the Brain Regulates Body Temperature?

• A. cerebellum
• B. cerebrum
• C. hypothalamus
• D. medulla

Explanation: The hypothalamus acts as the body's thermostat by detecting temperature changes and coordinating sweating, shivering, and changes in blood flow. The cerebellum mainly coordinates movement, while the medulla controls vital functions such as breathing and heartbeat.

1400. In Eye donation, which part of the eye used?

• A. Retina
• B. Iris
• C. Cornea
• D. Optic nerve

Explanation: The cornea is the transparent front covering of the eye and is the part commonly used in corneal donation and transplantation. The retina, iris, and optic nerve are not routinely transplanted in eye donation.