All Free Everyday Science MCQs with Answers

1291. A Rhinoscope (or Nasoscope) is a thin, tube-like instrument used to examine the inside of the_____?

• A. Eyes
• B. Nose
• C. Ears
• D. Brains

Explanation: A rhinoscope or nasoscope is inserted to examine the nasal passages, so it is used for the nose. Similar scopes are designed specifically for examining the ears or eyes.

1292. What is Melioidosis?

• A. Infectious disease
• B. Loss of memory
• C. Red spot in skin
• D. Pain in joints

Explanation: Melioidosis is an infectious disease caused by the bacterium Burkholderia pseudomallei, commonly found in contaminated soil and water. It can cause fever, pneumonia and other serious infections.

1293. The Study of human beauty is called____________?

• A. Oncology
• B. Agrostology
• C. Kalology
• D. Argology

Explanation: Kalology is the study or theory of beauty and aesthetic principles. Oncology concerns tumours, while agrostology is the study of grasses.

1294. The photo-receptors in the eye are present in___________?

• A. Cornea
• B. Retina
• C. Iris
• D. Sclera

Explanation: Photoreceptors, namely rods and cones, are light-sensitive cells located in the retina. The cornea and lens focus light, while the iris controls how much light enters.

1295. The movement of any solvent across a semipermeable membrane is called__________?

• A. Osmosis
• B. Cataphoresis
• C. Electrolysis
• D. Electrophoresis

Explanation: Osmosis is the movement of solvent, usually water, through a semipermeable membrane from a dilute solution toward a more concentrated solution. Electrophoresis and cataphoresis involve movement of charged particles rather than solvent flow.

1296. What is the one of the other name of Vitamin "A"?

• A. Riboflavin
• B. Ascorbic Acid
• C. Retinol
• D. Thiamin

Explanation: Retinol is the alcohol form of vitamin A and is important for vision, epithelial tissues, and immune function. Riboflavin is vitamin B2, ascorbic acid is vitamin C, and thiamin is vitamin B1.

1297. Which of the following gland has shape of butterfly?

• A. Thyroid gland
• B. Pituitary gland
• C. Adrenal gland
• D. Pineal gland

Explanation: The thyroid gland has two lobes joined by a narrow band, giving it a butterfly-like shape in the neck. The pituitary, adrenal, and pineal glands do not have this characteristic form.

1298. Another name of vitamin C is__________?

• A. Ascorbic Acid
• B. Acitic Acid
• C. Citric Acid
• D. Lysozyme

Explanation: Ascorbic acid is the chemical name of vitamin C, a water-soluble antioxidant needed for collagen formation and wound healing. Citric acid is a different acid found commonly in citrus fruits.

1299. Who discovered blood circulation?

• A. Carl Linnaeus
• B. Francis Crik
• C. Robert. Brown
• D. William Harvey

Explanation: William Harvey demonstrated that the heart pumps blood through a continuous circuit, establishing the modern understanding of blood circulation. The other names are associated with taxonomy, genetics, or cell biology.

1300. Other name of white blood cells is _____________?

• A. Erythrocytes
• B. Leukocytes
• C. Thrombocytes
• D. None of these

Explanation: White blood cells are leukocytes, derived from terms meaning white and cell. Erythrocytes are red blood cells, while thrombocytes are platelets.