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Which of the following is not an emulsion ?
Concept: undefined >> undefined
One of the following does not show Tyndall effect. This one is :
Concept: undefined >> undefined
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One of the following does not show Tyndall effect. This one is :
Concept: undefined >> undefined
Milk of Magnesia is :
Concept: undefined >> undefined
Milk of Magnesia is :
Concept: undefined >> undefined
Which of the following represents the solubility of sugar in water at 20°C ?
Concept: undefined >> undefined
Which of the following represents the solubility of sugar in water at 20°C ?
Concept: undefined >> undefined
Which one of the following is not a chemical change ?
Concept: undefined >> undefined
Which one of the following is not a chemical change ?
Concept: undefined >> undefined
One of the following liquids will leave behind a residue on heating. This one is :
Concept: undefined >> undefined
One of the following liquids will leave behind a residue on heating. This one is :
Concept: undefined >> undefined
Which of the following can be called a suspension ?
Concept: undefined >> undefined
Which of the following can be called a suspension ?
Concept: undefined >> undefined
What is the difference between colloids and suspensions ?
Concept: undefined >> undefined
What is the difference between colloids and suspensions ?
Concept: undefined >> undefined
One of the following represents the solution of solid in a solid. This one is :
Concept: undefined >> undefined
One of the following represents the solution of solid in a solid. This one is :
Concept: undefined >> undefined
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
Concept: undefined >> undefined
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
Concept: undefined >> undefined
When the solid A is added to water, it dissolves with the evolution of a lot of heat and making little explosions to form two products B and C. The properties of products B and C are entirely different from those of solid A as well as water. Moreover, products B and C cannot be reconverted into solid A and water. When another solid D is added to water, it dissolves with the absorption of a little heat to form a product E which cools down. The product E shows the properties of both, solid D as well as water. Moreover, product E can be converted into solid D and water.
(a) What type of change occurs when solid A is dissolved in water ? Why ?
(b) What type of change occurs when solid D is dissolved in water ? Why ?
(c) Name a metal which you think could behave like solid A. Also name the products B and C.
(d) Name the solid D if it is the one which is used in making ordinary dry cells.
(e) Name the process by which D can be recovered from E.
Concept: undefined >> undefined
