All Free Everyday Science MCQs with Answers

1471. The study Of GLANDS is called?

• A. cardiology
• B. None of these
• C. Endocrinology
• D. Entomology

Explanation: Endocrinology studies glands and the hormones they produce, especially the endocrine glands. Cardiology concerns the heart, while entomology concerns insects.

1472. How many bones in our body?

• A. 102
• B. 306
• C. 206
• D. 204

Explanation: A typical adult human skeleton contains 206 bones. The number can differ slightly in some people because of fused or extra small bones, but 206 is the standard count.

1473. Entomology Is the Study of___________?

• A. worms
• B. insects
• C. Animals
• D. All of these Educational Resources

Explanation: Entomology is the scientific study of insects, which are arthropods with features such as six legs and three main body regions. Worms and animals in general are broader or different study groups.

1474. How many numbers of chromosomes in Pea plant?

• A. 12
• B. 14
• C. 46
• D. 48

Explanation: A pea plant has 14 chromosomes in its diploid cells, arranged as seven pairs. This chromosome number was a key part of Mendel’s pea-plant experiments.

1475. The main function of kidney is____________?

• A. to control blood pressure
• B. to control body temperature
• C. to remove waste from blood
• D. to help in digestion of bady

Explanation: Kidneys filter the blood and remove metabolic wastes in the form of urine. They also help regulate blood pressure and fluid balance, but waste removal is their main function.

1476. Vertebral Column in human beings consists of how many vertebrae?

• A. 5
• B. 10
• C. 12
• D. 33

Explanation: The vertebral column contains 33 vertebrae in the usual anatomical count, including the fused sacral and coccygeal vertebrae. In adults, these form 26 separate bones because some vertebrae fuse.

1477. Orange belongs to the family

• A. Malvaceae
• B. Rutaceae
• C. Composite
• D. None of These

Explanation: Orange is a citrus fruit belonging to the family Rutaceae. Malvaceae includes plants such as cotton and hibiscus, while Composite refers to the daisy family.

1478. which one is the most common disease?

• A. Dental
• B. Leprosy
• C. Headache
• D. Migraine

Explanation: Dental caries and other dental diseases are among the most widespread human diseases, so “dental” is the intended choice. Headache is usually a symptom rather than a specific disease, while leprosy and migraine are much less common.

1479. The state of matter that has the highest kinetic energy is _________?

• A. Solid
• B. Liquid
• C. Gas
• D. NOT

Explanation: Gas particles move most freely and rapidly, so they have the highest average kinetic energy among the three common states. Solids have the least particle motion, while liquids are intermediate.

1480. Light can be considered as__________Signal?

• A. Electromagnetic
• B. Neutral
• C. Chemical
• D. Acoustic

Explanation: Light is an electromagnetic signal because it consists of oscillating electric and magnetic fields and does not need a material medium to travel. Acoustic signals, by contrast, are sound waves and require a medium.