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In non-ideal solution, what type of deviation shows the formation of maximum boiling azeotropes?
Concept: Vapour Pressure of Liquid >> Vapour Pressure of Liquid- Liquid Solutions
An element crystallises in a b.c.c lattice with cell edge of 500 pm. The density of the element is 7.5g cm-3. How many atoms are present in 300 g of the element?
Concept: Number of Atoms in a Unit Cell
Calculate the boiling point of solution when 4g of MgSO4 (M= 120 g mol-1) was dissolved in 100g of water, assuming MgSO4 undergoes complete ionization. (Kb for water = 0.52 K kgmol-1)
Concept: Colligative Properties and Determination of Molar Mass >> Elevation of Boiling Point
Why do gases always tend to be less soluble in liquids as the temperature is raised?
Concept: Solubility >> Solubility of a Gas in a Liquid
State Raoult’s law for the solution containing volatile components
Concept: Vapour Pressure of Liquid >> Vapour Pressure of Liquid- Liquid Solutions
Calculate the amount of CaCl2 (molar mass = 111 g mol−1) which must be added to 500 g of water to lower its freezing point by 2 K, assuming CaCl2 is completely dissociated. (Kf for water = 1.86 K kg mol−1)
Concept: Colligative Properties and Determination of Molar Mass >> Depression of Freezing Point
An element with density 10 g cm−3 forms a cubic unit cell with edge length of 3 × 10−8 cm. What is the nature of the cubic unit cell if the atomic mass of the element is 81 g mol−1?
Concept: Calculations Involving Unit Cell Dimensions
What type of non-stoichiometric point defect is responsible for the pink colour of LiCl ?
Concept: Imperfections in Solids - Introduction
What type of stoichiometric defect is shown by NaCl ?
Concept: Imperfections in Solids - Introduction
How will you distinguish between the following pair of terms?
Tetrahedral and octahedral voids
Concept: Close Packed Structures - Formula of a Compound and Number of Voids Filled
How will you distinguish between the following pair of terms?
Crystal lattice and unit cell
Concept: Crystal Lattices and Unit Cells
Write the type of magnetism observed when the magnetic moments are oppositely aligned and cancel out each other.
Concept: Properties of Solids: Magnetic Properties
Which stoichiometric defect does not change the density of the crystal?
Concept: Imperfections in Solids - Introduction
Write the type of magnetism observed when the magnetic moments are aligned in parallel and anti-parallel directions in unequal numbers.
Concept: Properties of Solids: Magnetic Properties
Which stoichiometric defect decreases the density of the crystal?
Concept: Imperfections in Solids - Introduction
Explain ionic solids are hard and brittle.
Concept: Classification of Crystalline Solids
Define Molarity (M).
Concept: Expressing Concentration of Solutions
Define the term Colligative properties
Concept: Colligative Properties and Determination of Molar Mass >> Elevation of Boiling Point
Write one difference in Coagulation and Peptization
Concept: Colligative Properties and Determination of Molar Mass - Introduction
Based on the nature of intermolecular forces, classify the following solids:
Sodium sulphate, Hydrogen
Concept: General Characteristics of Solid State
