All Free Everyday Science MCQs with Answers

961. What is the body temperature of a normal man?

• A. 81.1 °C
• B. 37.0 °C
• C. 98.6 °C
• D. 21.7 °C

Explanation: Normal core body temperature is approximately 37.0 °C, which is about 98.6 °F. The option showing 98.6 with a Celsius symbol is a unit error, not the standard Celsius answer.

962. In humans , most nutrient molecules are absorbed by the ?

• A. Small intestine
• B. Stomach
• C. Liver
• D. Large intestine
• E. None of these

Explanation: Most digestion products, including glucose, amino acids and fatty acids, pass into the blood or lymph through the small intestine. Its numerous villi provide a very large absorptive surface.

963. Myopia is a defect of Human eye. it can be corrected by using a lens called?

• A. Convex lens
• B. Concave lens
• C. Cylindrical lens
• D. Plano convex lens
• E. None of these

Explanation: In myopia, the eye focuses distant images in front of the retina. A concave lens diverges incoming rays so the eye can focus them on the retina.

964. The temperature of the dead body is_______________?

• A. 0 'C
• B. 37 '
• C. Room Temperature
• D. Temperature of the place where it is kept
• E. None of these

Explanation: After death, the body no longer regulates its temperature and gradually cools toward the surrounding temperature. Thus its temperature ultimately depends on the place where it is kept, although it is not instantly equal to it.

965. Name the famous book of Ibn-Sina in which he discussed human physiology and medicine ?

• A. Al-Qanun
• B. Al-Masudi
• C. New Renaissance
• D. Tadhkira
• E. None of these

Explanation: Ibn Sina's Al-Qanun fi al-Tibb, commonly called The Canon of Medicine, systematically discussed medical diagnosis, treatment and human physiology. Al-Masudi was a historical work, not his major medical encyclopedia.

966. Eugenics is the study of___________________?

• A. Altering human beings by changing their genetic components
• B. People of European region
• C. Different races of mankind
• D. Genetic of plants
• E. None of these

Explanation: Eugenics concerns attempts to influence the inherited qualities of human populations through selective reproduction or genetic intervention. It is not the study of Europeans, races in general, or plant genetics.

967. Defeciency of following vitamin decreases hemoglobin production ?

• A. Biotin
• B. Thiamine
• C. Niacin
• D. Pyridoxine
• E. None of these

Explanation: Vitamin B6, or pyridoxine, is needed for haemoglobin synthesis and normal red-blood-cell formation. Biotin, thiamine and niacin have other metabolic roles and are not the characteristic answer here.

968. The science which deals with study of manners and customs of people is ?

• A. Ethnology
• B. Morphology
• C. Ethics
• D. Genetics
• E. None of these

Explanation: Ethnology compares the cultures, social practices and customs of different peoples. Ethics deals with principles of right and wrong, while genetics studies heredity.

969. Which form of drug abuse involves most risk of infection with the HIV (AIDS) virus ?

• A. Cigarette smoking
• B. Using alcholo
• C. Injection of heroine
• D. Taking too much aspirin
• E. None of these

Explanation: Injecting heroin carries a high HIV risk when contaminated needles or syringes are shared, because infected blood enters the bloodstream directly. Smoking, alcohol and aspirin do not normally transmit HIV in this way.

970. What is the chance of diabetic baby born to parents both heterogeneous normal ?

• A. Zero
• B. ¼
• C. ½
• D. ¾
• E. None of these

Explanation: If diabetes is treated as an autosomal recessive trait, two unaffected heterozygous parents have the cross Aa × Aa, producing aa affected offspring in one out of four cases. This answer assumes the question uses the classical single-gene model of diabetes.