Explanation

Asbestos is a naturally occurring mineral that was widely used for its fire-resistant properties.

It is made up of fine, durable fibers that are resistant to heat, fire, and many chemicals

Asbestos was used in fireproof clothing, such as firefighters' suits

Due to its ability to withstand high temperatures and prevent combustion

Explanation

A single chlorine-free radical (Cl•) can destroy up to 100,000 ozone (O₃) molecules. This significant impact on ozone is due to the catalytic nature of chlorine in the ozone depletion process.

Explanation

The overall order of a reaction is the sum of the exponents of the concentration terms in the rate expression.

Given the rate expression:

rate=k[A] 2 [B] 3

The exponent for [A] is 2.

The exponent for [B] is 3.

To find the overall order of the reaction, we sum these exponents:

2+3=5

Therefore, the overall order of the reaction is 5.

Explanation

When a copper strip is placed in a solution of FeSO₄, no significant reaction occurs because copper does not have a stronger tendency to oxidize compared to iron.

The statement "Cu will be precipitated down" is because there is no source of Cu²⁺ ions in the solution to precipitate out.

Copper remains as a metal, and iron remains in the Fe²⁺ ionic form in the solution.

Explanation

Colligative properties are properties of solutions that depend on the number of solute particles in a given amount of solvent and not on the nature of the solute particles.

The four main colligative properties are:

• Vapor Pressure Lowering
• Boiling Point Elevation
• Freezing Point Depression
• Osmotic Pressure

Explanation

When HCl is added to aqueous H₂S, the increased H+ concentration causes a shift in the equilibrium of H₂S ionization

Leading to a decrease in the ionization of H₂S due to the common ion effect

Explanation

The body-centered cubic (BCC) unit cell is one of the common arrangements of atoms in crystalline solids. In this structure:

• Eight particles are located at the corners of the cube.
• One particle is situated in the center of the cube.

Explanation

The plasma in the Earth's ionosphere typically has temperatures ranging from about 1000°C to 2000°C

but it can be higher during periods of increased solar activity

Explanation

In decolorization, particularly in purifying substances like sugar or organic compounds, animal charcoal (also known as bone char) is often used for its adsorptive properties.

The boiling of animal charcoal with hot water serves several purposes:

• Activation
• Removal of Soluble Impurities
• Enhancing Adsorption

The general steps involved in the decolorization process with animal charcoal include:

• Preparation
  
• Mixing
• Adsorption
• Filtration
• Recovery

Explanation

• Osmosis is the process where a solvent, typically water.
• It moves through a porous membrane from an area of lower solute concentration to an area of higher solute concentration.