Free Crystalline Solids MCQs with Answers
184 Crystalline Solids MCQs from Chemistry, each with the correct answer and a written explanation of why it is correct. Free and unlimited, with no account needed.
Crystalline solids contain particles arranged in a regular repeating lattice described by a unit cell. Their study includes coordination number, packing efficiency, density, anisotropy, cleavage, polymorphism and common crystal systems, along with ionic, molecular, covalent network and metallic crystals. Crystalline order differs from the random arrangement of amorphous solids.
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184 questions · page 2 of 10
- A. Coloured solid
- B. Brittle
- C. Hard
- D. All of above
Explanation: Pure quartz is colourless, hard, and brittle, so “coloured solid” is not normally a property of pure quartz; colour usually comes from…
Correct answer: Coloured solid- A. 4
- B. 2
- C. 1
- D. 6
Explanation: In the silica network, each silicon atom forms four Si-O covalent bonds arranged tetrahedrally, so it is surrounded by 4 oxygen atoms.
Correct answer: 4- A. Absorbs moisture and remains solid
- B. Absorbs moisture and turns to liquid form
- C. Loses water of crystallization
- D. Increases the number of water of crystallization
Explanation: A deliquescent solid absorbs water vapour from the air until it dissolves in the absorbed water and becomes liquid.
Correct answer: Absorbs moisture and turns to liquid form- A. Lose water and remain solid
- B. Gain water and remain solid
- C. Gain water and become liquid
- D. Remains unchanged
Explanation: Na2CO3.10H2O is an efflorescent crystal, so it loses some water of crystallization when exposed to dry air.
Correct answer: Lose water and remain solid- A. drying
- B. heating
- C. evaporation
- D. All of the above
Explanation: Water of crystallization is held in a crystal lattice and is removed by heating, which supplies enough energy for the water molecules to…
Correct answer: heating- A. Hydrated ions
- B. double salts
- C. hydrates
- D. complexes
Explanation: Compounds containing a definite number of water molecules incorporated into their crystal structure are called hydrates, such as…
Correct answer: hydrates- A. Copper
- B. Ice
- C. Diamond
- D. Graphite
Explanation: Copper is a metallic solid whose atoms are held together by metallic bonding, so it does not contain the network of covalent bonds found…
Correct answer: Copper- A. Iodine
- B. Benzoic acid
- C. Ammonium chloride
- D. Potash alum
Explanation: Iodine, benzoic acid and ammonium chloride can pass into vapour and then deposit as solid during sublimation.
Correct answer: Potash alum- A. filtered
- B. dried
- C. decolorized
- D. decanted
Explanation: The grade and pore size of filter paper are selected according to the size of the solid particles that must be retained.
Correct answer: filtered- A. 2
- B. 3
- C. 4
- D. 5
Explanation: Complete quantitative analysis is commonly described in four main stages: sampling, preparing the sample, carrying out the measurement…
Correct answer: 4- A. absorption
- B. adsorption
- C. filtration
- D. sublimation
Explanation: Sintered glass contains a fixed network of interconnected pores, allowing liquid or gas to pass while retaining solid particles.
Correct answer: filtration- A. Filter paper
- B. Vacuum desiccators
- C. Oven
- D. None of these
Explanation: A vacuum desiccator removes moisture at reduced pressure without strongly heating the crystals, making it safer for heat-sensitive…
Correct answer: Vacuum desiccators- A. Crystallization
- B. Filtration
- C. Sublimation
- D. Solvent extraction
Explanation: Sublimation separates a solid that changes directly into vapour from non-sublimable solid impurities, and the vapour is then deposited as…
Correct answer: Sublimation- A. Inconsistent flow of filtration
- B. splashing
- C. premature crystallization
- D. all of above
Explanation: Allowing the funnel tip to touch the beaker wall lets the liquid run smoothly down the wall instead of falling freely, thereby preventing…
Correct answer: splashing- A. solution
- B. amount of insoluble solute
- C. amount of soluble solute
- D. Amount of solvent
Explanation: The filter paper must be large enough to hold the insoluble residue collected during filtration, so its size depends on the amount of…
Correct answer: amount of insoluble solute- A. needed
- B. avoided
- C. depends on temperature
- D. crystallization does not involve heating
Explanation: An inflammable solvent can ignite when heated directly over a flame, so direct heating is avoided and a safer heat source such as a water…
Correct answer: avoided- A. oxidizing agent
- B. reducing agent
- C. drying agent
- D. colouring agent
Explanation: Calcium chloride and phosphorus pentachloride remove water because they act as drying agents, helping to obtain a dry product or solvent…
Correct answer: drying agent- A. Fast process
- B. Slow process
- C. Rapid process
- D. All are possible
Explanation: Without a suction pump, filtration is driven only by gravity and therefore takes place relatively slowly.
Correct answer: Slow process- A. Solvent extraction
- B. sublimation
- C. crystallization
- D. vaporization
Explanation: Sublimation is the direct conversion of a solid into vapour without passing through the liquid state.
Correct answer: sublimation- A. heating
- B. sublimation
- C. cooling
- D. vaporization
Explanation: Crystallization commonly involves dissolving a solid by heating, concentrating the solution by partial vaporization, and cooling it to…
Correct answer: sublimation