Chemistry Questions

Molecular compounds are those with covalent bonds between the elements and those elements are typically non metals.

Here in the given options, Ar is an element. NaI has an ionic bond. Hence, N2O4 has a covalent bond between the two non metals and is a molecular compound.

Silicon carbide is used in Cutting very hard substances.

In thermodynamics, deposition is a phase transition in which gases are directly transformed to solids without converting to liquids first.

For example, watervapour is directly changed to ice without first becoming to liquid water. In this process, heat is released making the process exothermic process.

'M' is used as a unit of molarity and stands for mole per litre i.e, number of moles of solute per liter of solution.

The outer most electrons that are free to move are called valency electrons that are responsible for the conductivity in the metal atoms.

Shock resisting steels should have toughness.

S-5 is a silico-manganese shock resisting steel that offers good ductility.

Oxygen is the final electron acceptor of cellular respiration.