Explanation

• Phosphorus-32 is used to study the uptake of phosphorus-containing fertilizers.
• This radioactive isotope helps in tracing and measuring the absorption and movement of phosphorus within plants.

Explanation

The K orbit, also known as the first electron shell.

• It can hold a maximum of 2 electrons.

The L orbit, also known as the second electron shell.

• It can hold a maximum of 8 electrons.

The M orbit, also known as the third electron shell.

• It can hold a maximum of 18 electrons.

Explanation

Explanation

The hydrolysis of fats is brought about by lipase enzymes.

Lipases are a class of enzymes that catalyze the hydrolysis of fats into fatty acids and glycerol.

Explanation

• Nitrogen (N2) is the most abundant constituent in air.
• Making up approximately 78% of the Earth's atmosphere.

The correct order of abundance:

• Nitrogen (N2) - 78%
• Oxygen (O2) - 21%
• Argon (Ar) - 0.93%
• Carbon Dioxide (CO2) - 0.04%

Explanation

• When water evaporates, it changes from a liquid to a gas.
• This gaseous state is called water vapor.

Explanation

• In a solid, the particles are closely packed and have a fixed position.
• With a regular arrangement that gives the solid its shape and structure.

Explanation

In the Fahrenheit scale:

• The freezing point of water is 32°F
• The boiling point of water is 212°F

Explanation

• Filtration is the process of separating an insoluble solid from a liquid by passing the mixture through a filter paper or a porous material.
• The solid particles are retained by the filter.
• While the liquid passes through, resulting in a clear separation of the two.

Explanation

• Decantation is the process of carefully pouring a liquid from one container to another, leaving the solid particles that have settled at the bottom of the original container behind.
• This process is used to separate a liquid from a solid, without disturbing the solid.