All Free Everyday Science MCQs with Answers

1101. H5N1 virus is caused of_______?

• A. AIDs
• B. fever
• C. Bird flu
• D. non

Explanation: H5N1 is a strain of influenza A virus associated with avian influenza, commonly called bird flu. AIDS is caused by HIV, not H5N1.

1102. Blood glucose level is raised by the following except __________?

• A. Carbohydrates
• B. Insulin
• C. Cholesterol
• D. Epinephrine

Explanation: Insulin lowers blood glucose by helping cells absorb glucose and by promoting its storage as glycogen. Carbohydrates and epinephrine generally raise blood glucose, while cholesterol is not the intended direct regulator in this list.

1103. Which among the following lens is used to correct Presbyopia?

• A. Bifocal
• B. Convex
• C. Concave
• D. Cylindrical

Explanation: Presbyopia is the age-related loss of near focusing, so bifocal lenses provide separate correction for distant and near vision. Concave lenses correct myopia, while cylindrical lenses correct astigmatism.

1104. Fat is digested in which part of body?

• A. Small intestine
• B. Mouth
• C. Large intestine
• D. Spleen

Explanation: Most fat digestion takes place in the small intestine, where bile emulsifies fats and pancreatic lipase breaks them into absorbable fatty acids and related products. The large intestine mainly absorbs water.

1105. Anti Diuretic hormone (ADH) is secreted by?

• A. Pituitary gland
• B. Pancreas
• C. Thyroid
• D. Parathyroid

Explanation: ADH is produced in the hypothalamus and released into the blood by the posterior pituitary, so the pituitary gland is the expected answer. It helps the kidneys conserve water by increasing water reabsorption.

1106. Zika virus was named after the Zika forest of which country?

• A. Nigeria
• B. Angola
• C. Uganda
• D. Zimbabwe

Explanation: The virus was identified in Uganda's Zika Forest, near Entebbe, in 1947. Its name therefore comes from Uganda, not the other African countries listed.

1107. Cancer can be treated by ___________?

• A. Antibiotics & vaccines
• B. Radiotherapy & antibiotics
• C. Chemotherapy & radiotherapy
• D. Antibiotics & Chemotherapy

Explanation: Chemotherapy uses anti-cancer drugs, while radiotherapy uses ionising radiation to destroy or control cancer cells. Both are established cancer treatments, although surgery and other therapies may also be used.

1108. Which one of the following is called the Blood Bank?

• A. Kidneys
• B. Liver
• C. Spleen
• D. Heart

Explanation: The spleen stores and filters blood and can act as a reservoir for blood cells, which is why it is traditionally called the blood bank. The liver has major blood-processing functions but is not given this standard name.

1109. Which one of the following is known as graveyard of RBCs?

• A. Liver
• B. Spleen
• C. Pancreas
• D. None of these

Explanation: The spleen removes old or damaged red blood cells from circulation, so it is commonly called their graveyard. The liver also helps break down blood-cell products but is not the standard answer here.

1110. What is the chemical name of vitamin E?

• A. Calciferol
• B. Tocopherol
• C. Riboflavin
• D. Phylloquinone

Explanation: Vitamin E is a group of compounds known as tocopherols and tocotrienols, with alpha-tocopherol being the main biologically active form. Calciferol is vitamin D, riboflavin is vitamin B2, and phylloquinone is vitamin K1.