Explanation

Dry ice is a solid form of carbon dioxide.

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"Dry ice" is solid, frozen carbon dioxide, which is sublimated at a chilly -78.5 °C (-109.3°F).

Dry ice is used primarily as a cooling agent.

Dry ice does not melt into a liquid when heated instead, it changes directly into a gas.

ND16-8-2023

Explanation

• The average internal temperature of the human body is 37°C (98.6°F).
• It is the normal body temperature range for a healthy adult.

Explanation

Genetic Material in Viruses:

Viruses can have either DNA or RNA as their genetic material, but never both in the same virus.

Examples:

DNA viruses: Herpesvirus, Smallpox.

RNA viruses: HIV, Influenza, SARS-CoV-2.

Explanation

The Frontal Lobe (part of the Cerebrum) controls reasoning, planning, and problem-solving.

More Details
Cerebellum → balance & coordination,
Medulla → involuntary actions,
Cerebrum → higher thinking functions, divided into 4 lobes (Frontal, Parietal, Temporal, Occipital).

Explanation

Dissolving sugar in water is a physical change—no new substance is formed.

The sugar can be recovered by evaporation, showing it’s not a chemical reaction.

Explanation

Chlorophyll is the green pigment in plants that captures sunlight for photosynthesis.

It helps convert carbon dioxide and water into glucose and oxygen.

Explanation

Hepatitis B is the second major type of viral hepatitis after Hepatitis A.

It affects the liver.

It can lead to chronic infection and cirrhosis.

Explanation

Unit of torque: newton metre (N m)

Explanation

Summer Solstice happens once every year. 

Summer Solstice is on 21 June, also known as the longest day of the year.

22 December night is the longest night of the year.

Explanation

Milk is approximately 87% water and 13% solids.

The solids include fats, proteins, vitamins, and minerals.