All Free Everyday Science MCQs with Answers

1231. 'ELISA' test is employed to diagnose?

• A. Corona virus
• B. AIDS antibodies
• C. Tuberculosis bacterium
• D. Cancer

Explanation: ELISA can detect antibodies against HIV and was historically a common screening test for AIDS-related infection. It is a general immunological technique, so modified ELISA tests can also detect other diseases.

1232. Sleeping sickness in the natives of Africa is caused by________?

• A. Trichomonas
• B. Giardia
• C. Leishmania
• D. Trypanosoma

Explanation: African sleeping sickness is caused by Trypanosoma parasites, transmitted mainly by the tsetse fly. Leishmania causes leishmaniasis, while Giardia and Trichomonas cause different infections.

1233. Which of the following is not a mosquito born disease?

• A. Dengue fever
• B. Malaria
• C. Sleeping sickness
• D. Filariasis

Explanation: Sleeping sickness is transmitted by the tsetse fly, not by mosquitoes. Dengue, malaria, and filariasis are commonly transmitted by mosquitoes.

1234. Amnesia is related to:__________?

• A. Sleeping sickness
• B. Loss of sight
• C. Loss of hearing
• D. Loss of memory Trying Interactive Physics Simulation Software

Explanation: Amnesia means partial or complete loss of memory, often due to injury, disease, or psychological trauma. It does not specifically mean loss of sight or hearing.

1235. Which two organs glands are affected by malaria?

• A. Lungs and heart
• B. Spleen and liver
• C. Kidneys and lungs
• D. Heart and brain

Explanation: Malaria parasites first develop in the liver and later infect red blood cells, while the spleen helps filter affected cells and may become enlarged. Thus, the liver and spleen are the characteristic organs involved among these choices.

1236. Vector of Kala-azar disease is___________?

• A. Sandfly
• B. Dragonfly
• C. Mosquito
• D. Housefly

Explanation: Kala-azar, or visceral leishmaniasis, is transmitted by the bite of an infected female sandfly. Mosquitoes transmit diseases such as malaria and dengue, not kala-azar.

1237. Which of the following is not a contagious disease?

• A. Hysteria
• B. Measles
• C. Typhoid
• D. Influenza

Explanation: Hysteria is not an infectious disease and therefore does not spread from person to person. Measles, influenza, and typhoid are communicable diseases, although typhoid commonly spreads through contaminated food or water.

1238. Which of the following is nutritional deficiency disease?

• A. Albinism
• B. Cirrhosis
• C. Rabies
• D. Pellagra

Explanation: Pellagra results mainly from niacin, or vitamin B3, deficiency and is classically associated with dermatitis, diarrhoea, and dementia. Albinism is genetic, rabies is infectious, and cirrhosis is liver damage with multiple possible causes.

1239. Vitamin B3 is also known as__________?

• A. Thiamine
• B. Riboflavin
• C. Niacin
• D. Retinol

Explanation: Vitamin B3 is niacin, which is needed for energy metabolism and healthy skin and nerves. Thiamine is B1, riboflavin is B2, and retinol is vitamin A.

1240. Vitamin B2 is also called as__________?

• A. Riboflavin
• B. Thiamine
• C. Ascorbic Acid
• D. Niacin

Explanation: Vitamin B2 is riboflavin, a coenzyme vitamin involved in energy release and tissue maintenance. Thiamine is B1, niacin is B3, and ascorbic acid is vitamin C.