Zinc oxide is a common active ingredient in sunscreens that protects against UV rays.

Vinegar contains acetic acid, which is responsible for its sour taste.

Vinegar primarily consists of acetic acid, which gives it its sour taste.

The main language spoken in Brazil is Portuguese.

The Rutherford model fails to explain why electrons do not spiral into the nucleus, thus not accounting for atomic stability.

Convection is the primary mechanism of heat transfer in liquids and gases due to the movement of the fluid.

In liquids, convection is the main mechanism of heat transfer, as the fluid moves and carries heat with it.

The main method of hydrogen production in the industry is steam reforming of natural gas.

In the laboratory, hydrogen is commonly produced by the reaction of metals (like zinc) with acids.

HIV is primarily transmitted through sexual contact.

Ethylene is the main monomer used to produce polyethylene through addition polymerization.

Polystyrene is produced from the polymerization of styrene monomers.

Reptiles primarily excrete nitrogenous waste in the form of uric acid, which conserves water.

Birds and reptiles primarily excrete uric acid, which is less toxic and conserves water compared to urea.

Reptiles and birds primarily excrete uric acid, which is less toxic and conserves water.

The main objective of the 'Digital India' initiative is to ensure that government services are made available to citizens electronically.

The Pradhan Mantri Awas Yojana aims to provide affordable housing to the urban poor, ensuring that everyone has access to a home.

The Pradhan Mantri Awas Yojana aims to provide affordable housing to the urban poor.

The passage discusses how music genres continuously evolve, influenced by cultural shifts and technological advancements, reflecting societal changes.

When aluminum reacts with hydrochloric acid, hydrogen gas (H2) is produced along with aluminum chloride (AlCl3).

When hydrogen reacts with oxygen, the main product formed is water (H2O).

The main product of nuclear fusion in stars is helium.

The main product of photosynthesis is glucose, which serves as an energy source for the plant.

The main products of the combustion of hydrocarbons are water (H2O) and carbon dioxide (CO2).

The main products of the complete combustion of alkanes are carbon dioxide and water.

The complete combustion of ethane produces carbon dioxide and water as the main products.

The complete combustion of hydrocarbons produces carbon dioxide and water.

The complete combustion of methane (CH4) produces carbon dioxide (CO2) and water (H2O).

The complete combustion of propane produces carbon dioxide and water.

The dehydration of an alcohol typically yields an alkene.