Explanation

In Karst topography, both gypsum and dolomite are soluble.

They can form karst landscapes through dissolution.

This process is similar to limestone, though it occurs at varying rates.

Explanation

Neutrons have no electric charge, hence they are neutral.

Protons have a positive charge.

Electrons have a negative charge.

Explanation

Blotting paper absorbs the water through capillary action only as thin threads like structure are present in blotting paper.

Explanation

Hypotonic sports drinks contain a low level of carbohydrates.

They can quickly replace fluids that are lost by sweating and provide some energy in the form of sugar calories.

They are suitable for athletes who need fluids without a significant boost of carbohydrates.

Explanation

CNG (Compressed Natural Gas) is primarily composed of methane.

When comparing the burning efficiency of CNG to other gases

It is generally understood that CNG burns less efficiently than Propane

Propane has a higher energy content per unit volume compared to methane, meaning it can produce more energy when burned.

Explanation

Oxy-acetylene welding is a very common welding process.

Gases used in welding and cutting processes include:

• shielding gases such as carbon dioxide, argon, helium, etc.
• fuel gases such as acetylene, propane, butane, etc.

oxygen, used with fuel gases and also in small amounts in some shielding gas mixtures

Explanation

The least polluted gas chlorine.

The most polluted gas is carbon monoxide.

Explanation

To make an uncharged object have a negative charge, we must add electrons, which carry a negative charge.

This process increases the overall negative charge of the object.

This leading to an excess of electrons over protons.

Explanation

Joseph Priestley invented soda water in 1767 by infusing water with carbon dioxide.

His method laid the foundation for carbonated beverages.

Explanation

Ozone (O3) is a gas found in the stratosphere.

A stratosphere layer of the atmosphere that extends from about 12 to 50 kilometers (7.5 to 31 miles) above the Earth's surface.

The ozone layer, also known as the ozonosphere.