Explanation

Explanation

In gases, heat transfers mainly by convection.

Convection is the process of heat transfer by the actual movement of medium particles.

To some extent, gases also transfer heat by conduction when they are in static conditions.

Explanation

The speed of sound is maximum in steel

The speed of sound in Glass is 4540m/s

The speed of sound in Solid is: 332 meters per second

Sound is: a longitudinal wave

Sh5-8-2023

Explanation

A beta particle, also called beta ray or beta radiation (symbol β), is a high-energy, high-speed electrons emitted by the radioactive decay of an atomic nucleus during the process of beta decay.

Explanation

Nanocomposite materials have been used in active packaging to prevent the passage of oxygen, carbon dioxide, and moisture into the food.

Nanomaterials must be used with caution because they have the potential to cause toxic effects.

Explanation

IMPORTANT QUESTIONS AND INFORMATION RELATED TO "GREEN HOUSE EFFECT"

Green House Effect means the Trapping of Solar energy due to atmospheric carbon dioxide

The greenhouse effect is a good thing.

It warms the planet to its comfortable average of 57 degrees Fahrenheit (13.9 degrees Celsius)

The greenhouse effect keeps life on earth, well, livable.

The Green House Effect is caused by an excess of Carbon dioxide

The greenhouse effect causes Global warming

Methane gas is 80 times potent than CO2 in Green House Effect

ND2-03-2023

RY 23-12-2022

Explanation

Isotopes are atoms with different atomic masses that have the same atomic number.

The atoms of different isotopes are atoms of the same chemical element; they differ in the number of neutrons in the nucleus.

Isotopes:

• The isotopes are a group of atoms that have the same atomic numbers but different mass numbers.
• That means all isotopes of an element have the same number of protons in their atomic nuclei and the same number of electrons in the electron cloud surrounding the nucleus.

Difference between isotopes

• Isotopes differ in the total number of neutrons present in their respective atomic nuclei.
• Thus they have different mass numbers.
• Different isotopes of the same element are having different masses.
• Protium (1 proton,1 electron, and no neutrons), Deuterium (1 proton, 1 electron, and 1 neutron), and Tritium (1 proton, 1 electron, and 2 neutrons) are examples of isotopes of Hydrogen.

Explanation

• Isotopes of an element have the same atomic number (number of protons).
• It means they have the same chemical properties and are considered the same element.

Explanation

A mature tree absorbs carbon dioxide at a rate of 48 pounds per year.

In one year, an acre of forest can absorb twice the CO2 pgroduced by the average car's annual mileage.

Explanation

Smog is formed when pollutant gases like nitrogen oxides and hydrocarbons react in sunlight (photochemical reaction).

It creates a thick, hazy air harmful to health, especially in urban areas.