All Free Everyday Science MCQs with Answers

1321. A bird that can fly backwards?

• A. Bat
• B. Humming Bird
• C. Crimson Sun Bird
• D. Cardinal Bird

Explanation: The hummingbird is the only bird capable of sustained backward flight because its rotating wing motion and shoulder structure allow it to generate lift while moving backward. The other options cannot perform this controlled flight.

1322. Animal with the sharpest hearing ability?

• A. Rat
• B. Greater wax moth
• C. Bat
• D. Squirrel

Explanation: The greater wax moth can detect extremely high-frequency sounds, reportedly up to about 300 kHz, giving it the sharpest known hearing among animals. This helps it detect the ultrasonic calls of bats, its predators.

1323. How many hearts an Octopus has?

• A. 10
• B. 8
• C. 5
• D. 3

Explanation: An octopus has three hearts: two pump blood to the gills and one pumps oxygenated blood to the rest of the body. The number eight refers to its arms, not its hearts.

1324. Goitre is associated with___________?

• A. Pituitary gland
• B. Thyroid gland
• C. Thymus gland
• D. Para-Thyroid gland

Explanation: Goitre is an enlargement of the thyroid gland, often caused by iodine deficiency or another thyroid disorder. The pituitary regulates many glands, but it is not the gland that enlarges in goitre.

1325. Which bone in human body is not directly attached to other bones?

• A. Ulna
• B. Hyoid
• C. Tibia
• D. Cranium

Explanation: The hyoid is suspended in the neck by muscles and ligaments and does not form a direct bony joint with another bone. The ulna, tibia and cranium are all attached to other bones.

1326. Where is the uvula located in human body?

• A. Throat
• B. Stomach
• C. Scrotum
• D. None

Explanation: The uvula is the small, fleshy projection hanging from the soft palate at the back of the mouth, in the throat region. It helps during swallowing and speech.

1327. Maxilla bones are found in___________?

• A. Jaw
• B. Toe
• C. Ear
• D. Stomach

Explanation: The maxillae are the paired upper-jaw bones; they form the upper jaw and part of the face. They are not bones of the lower jaw, which is the mandible.

1328. How many blood vessels can be found in the Umbilical Cord?

• A. Two
• B. One
• C. Four
• D. Three

Explanation: A normal human umbilical cord contains three vessels: two umbilical arteries and one umbilical vein. The vein carries oxygenated blood toward the fetus, while the arteries carry deoxygenated blood away.

1329. Which breed of dog has a black tongue?

• A. Chow Chow
• B. Shih Tzu
• C. Husky
• D. None

Explanation: The Chow Chow is famous for its blue-black tongue, a distinctive breed characteristic. A few other breeds may show dark pigmentation, but Chow Chow is the standard answer among these options.

1330. What is amoxicillin?

• A. Type of birth control
• B. A herbal remedy
• C. An antibiotic
• D. None

Explanation: Amoxicillin is a penicillin-type antibiotic used against susceptible bacterial infections. It does not treat viral illnesses and is not a herbal remedy or contraceptive.