Everyday Science 2137 MCQs [All-Courses]

1. The smallpox vaccine was discovered by Edward Jenner in 1796.

2. He is known as the “Father of Vaccination.”

3. He used cowpox material to protect people from smallpox.

1. Penicillin was first discovered by Alexander Fleming in 1928.

   He discovered it accidentally from a mold called Penicillium.

2. Penicillin became the world’s first widely used antibiotic.

Agricultural land is converted into desert due to desertification.
It happens because of deforestation, overgrazing, excessive farming, and shortage of water.
These factors make the soil dry and infertile, turning fertile land into desert land.

• The egg has the highest protein content among the listed options.
• It is considered a "complete protein" source because it contains all nine essential amino acids required by the human body.
• On average, one large egg provides approximately 6–7 grams of protein, which is about 12.6–13 grams of protein per 100 grams

Hydrochloric acid is the digestive fluid formed by the stomach during the process of digestion. 

Sheep (Dolly was the world's first mammal cloned from an adult cell, created in 1996 in Scotland using somatic cell nuclear transfer at the Roslin Institute.)

• Ptyalin is also called salivary amylase.
• It is secreted by the salivary glands in the mouth.
• Its main function is to digest starch.
• Ptyalin converts starch into maltose and dextrin.

• When a ball is thrown vertically upward, gravity acts downward, slowing the ball.
• As the ball goes up, its velocity decreases continuously.
• At the highest point, the ball stops for an instant before coming down.
• At that instant, the velocity becomes zero (but acceleration due to gravity is still present).

• Wind is the movement of air from high-pressure areas to low-pressure areas.
• When atmospheric pressure decreases in a region, it creates a low-pressure area.
• Air from surrounding high-pressure areas rushes toward the low-pressure area.
• This horizontal movement of air is called wind.