Explanation

Diphtheria is a bacterial infection caused by Corynebacterium diphtheriae.

It affects the respiratory system.

It can lead to serious complications if untreated.

Explanation

The limbic system is the part of the brain primarily involved in processing emotions and memory.

It includes structures like the amygdala and hippocampus that regulate emotional responses.

Explanation

Explanation

• Argon (Ar) is a noble gas that is not typically associated with acid rain.

Acid rain is caused by the presence of pollutants in the air, such as:

• Sulfur dioxide (SO2)
• Nitrogen oxides (NOx)
• Oxygen (O2) plays a role in the formation of acid rain, as it reacts with SO2 and NOx to form acidic compounds.

Explanation

Hepatitis is not a bacterial disease; it is caused by viruses (like Hepatitis A, B, C).

Tuberculosis and Pneumonia (in many cases) are caused by bacteria.

Explanation

Explanation

A baby’s heartbeat starts before he is born.

It typically around six or seven weeks into pregnancy.

As the heart begins to develop and function while the fetus is still in the womb.

Explanation

Typhoid and Cholera are both waterborne diseases that can be caused by drinking contaminated water.

• Typhoid fever is a bacterial infection caused by Salmonella Typhi, which can be spread through contaminated food and water.
• Cholera is a diarrheal disease caused by Vibrio cholerae, which can be spread through contaminated food and water, as well as through person-to-person contact.

Explanation

• Cytophase is not a stage of mitosis.

The stages of mitosis are:

1. Prophase
2. Metaphase
3. Anaphase
4. Telophase

Explanation

Tea is best cultivated on hill slopes.

As they provide proper drainage, suitable temperature, and optimal sunlight for tea plants.