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Define Green chemistry.
Concept: Green Chemistry and Nanochemistry
Bottom ash of thermal power stations can be used as raw material for cement and brick industry. This example illustrates which of the following principle of green chemistry?
Concept: Principles of Green Chemistry
Explain any three characteristic features of nanoparticles.
Concept: Nanoparticles and Nanotechnology
Define Broad-spectrum antibiotics with a suitable example?
Concept: Classification of Drugs
Explain Tranquilizers
Concept: Classification of Drugs
Define antioxidants?
Concept: Chemicals in Food - Artificial Sweetening Agents and Food Preservatives
How many atoms constitute one unit cell of a face-centered cubic crystal?
Concept: Number of Atoms in a Unit Cell
What is the formula of a compound in which the element Y forms hcp lattice and atoms of X occupy 2/3rd of tetrahedral voids?
Concept: Close Packed Structures - Formula of a Compound and Number of Voids Filled
Define the following term: Primitive unit cells
Concept: Crystal Lattices and Unit Cells
Define the following term:
Ferromagnetism
Concept: Properties of Solids: Magnetic Properties
Define Anisotropy.
Concept: Classification of Crystalline Solids
An element with molar mass 27 g/mol forms a cubic unit cell with edge length of 405 p.m. If the density of the element is 2.7 g/cm3, what is the nature of the cubic unit cell?
Concept: Cubic System
Define unit cell.
Concept: Classification of Crystalline Solids
Gold crystallises into face-centred cubic cells. The edge length of a unit cell is 4.08 × 10–8 cm. Calculate the density of gold. [Molar mass of gold = 197 g mol–1]
Concept: Cubic System
Define boiling point
Concept: Types of Solutions
Derive van’t Hoff general solution equation.
Concept: Abnormal Molar Masses
Define ebullioscopic constant.
Concept: Relative Molecular Mass >> Boiling Point Elevation
