Nihilent Interview Questions and Answers

Chromatography is a technique used to separate and analyze mixtures of substances based on their different properties.

• Chromatography involves a stationary phase and a mobile phase.

• The stationary phase can be a solid or a liquid that is fixed in place.

• The mobile phase is a liquid or gas that carries the mixture through the stationary phase.

• Different components of the mixture interact differently with the stationary phase, leading to separation.

• Common types of chromatography in...read more

Molarity is a measure of the concentration of a solute in a solution.

• Molarity is defined as the number of moles of solute per liter of solution.

• It is denoted by the symbol 'M'.

• Molarity is commonly used in pharmacy to prepare and dilute solutions.

• For example, a 1 M (1 molar) solution of sodium chloride contains 1 mole of sodium chloride dissolved in 1 liter of solution.

Molality is a measure of the concentration of a solute in a solvent, expressed as the number of moles of solute per kilogram of solvent.

• Molality is different from molarity, which is the number of moles of solute per liter of solution.

• It is commonly used in chemistry and pharmacy to accurately measure the concentration of a solute in a solvent.

• Molality is temperature-independent, unlike molarity.

• For example, a solution with a molality of 0.5 mol/kg means there are 0.5 moles of...read more

Normality refers to the concentration of a substance in a solution, expressed as the number of equivalents per liter.

• Normality is a measure of the concentration of a substance in a solution.

• It is expressed as the number of equivalents per liter (eq/L).

• Normality is commonly used in acid-base reactions and redox reactions.

• For example, a 1M solution of hydrochloric acid (HCl) is also 1N because HCl is monoprotic.

• However, a 1M solution of sulfuric acid (H2SO4) is 2N because it is...read more

The question is unclear. Please provide more context.

• Please clarify which chemicals you are referring to.

• Are you asking for the chemical formula of a specific medication?

• Chemical formulas are typically composed of symbols representing elements and subscripts indicating the number of atoms present.

• Examples of chemical formulas include H2O for water and NaCl for table salt.