All Free Everyday Science MCQs with Answers

1051. Who is the Father of Genetics?

• A. Gregor Mendel
• B. Alexendar
• C. Darewin
• D. Louis pasture

Explanation: Gregor Mendel established the basic laws of inheritance through his pea-plant experiments, so he is known as the father of genetics. His work introduced the ideas of dominant and recessive traits.

1052. Which one of the following is not a true fruit?

• A. Apple
• B. Grapes
• C. dates
• D. plum

Explanation: An apple is a pome, an accessory fruit in which much of the fleshy edible portion develops from floral tissues other than the ovary. Grapes, dates and plums develop from the ovary and are true fruits.

1053. Activity of Brain is recorded by ____________?

• A. ECG (Electrocardiogram)
• B. EEG (Electroencephalogram)
• C. X-Ray
• D. None of these

Explanation: An EEG records the brain's electrical activity through electrodes placed on the scalp. An ECG records the electrical activity of the heart.

1054. Which element has the second most % in human body?

• A. Oxygen 65%
• B. Calcium 75%
• C. Hydrogen 10%
• D. Carbon 18%Science

Explanation: Carbon makes up roughly 18% of the body by mass, second only to oxygen at about 65%. Hydrogen is about 10%, so it ranks third among these major elements.

1055. Which element has the most % in human body?

• A. Oxygen 65%
• B. Calcium 75%
• C. Hydrogen 10%
• D. Carbon 18%

Explanation: Oxygen is the most abundant element in the human body by mass, largely because it forms part of water and many organic compounds. It accounts for approximately 65% of body mass.

1056. JAUNDICE is the disease of __________?

• A. Heart
• B. Liver
• C. Lungs
• D. Brain

Explanation: Jaundice causes yellowing of the skin and eyes when bilirubin accumulates in the blood, commonly because of liver disease or impaired bile flow. It is therefore primarily associated with the liver.

1057. The importance of perspiration is to ___________?

• A. Eliminate body odours
• B. Improve the general health
• C. Open the pores in the skin
• D. Regulate body temperature

Explanation: Perspiration cools the body when sweat evaporates from the skin, removing heat from its surface. Eliminating odour is not its main physiological function.

1058. Water soluble vitamins are released by__________?

• A. Sweat
• B. Tears
• C. Injections
• D. Urine

Explanation: Water-soluble vitamins, especially excess vitamin B and vitamin C, are not stored extensively and are removed mainly through urine. Fat-soluble vitamins are more likely to accumulate in body tissues.

1059. Which hormone is necessary for the production of milk in the mother's breast?

• A. FSH
• B. prolactin
• C. A.D.H.
• D. Oxytocin

Explanation: Prolactin stimulates the mammary glands to produce milk after childbirth. Oxytocin causes milk ejection, so confusing these two hormones is the common trap.

1060. Nowadays Milk is not considered balanced diet because it is lacking in ___________?

• A. Magnesium and Vitamin D
• B. Iron and Vitamin B
• C. Iron and Vitamin C
• D. calcium and vitamin C

Explanation: Milk supplies protein, fat and calcium but is naturally poor in iron and vitamin C. Therefore, milk alone is not nutritionally complete despite being an important food.