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Out of a Colloid, Solution and a Suspension : Which One Has the Smallest Particles ?

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प्रश्न

Out of a colloid, solution and a suspension :

which one has the smallest particles ?

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उत्तर

Solution has the smallest particles.

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अध्याय 2: Is Matter Around Us Pure - Very Short Answers [पृष्ठ ७९]

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लखमीर सिंग Chemistry Part 2 [English] Class 9
अध्याय 2 Is Matter Around Us Pure
Very Short Answers | Q 1.1 | पृष्ठ ७९

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

The smallest unit of matter that exists freely in nature is called ...........


Define the following term  of Atom .


State two characteristics of matter demonstrated by Brownian motion.


Name a liquid which can be classified as a pure substance and conducts electricity.


Which of the following are not compounds ?

Chlorine gas, Potassium chloride, Iron powder, Iron sulphide, Aluminium foil, Iodine vapour, Graphite, Carbon monoxide, Sulphur powder, Diamond


Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.

  1. What type of substance is B ?
  2. What type of substance is C ?
  3. Name the gas (i) D, and (ii) E ?
  4. State one characteristic property of gas D.
  5. Write one test to identify gas E.

Choose the correct answer.

A 5 per cent sugar solution means that :


In what respects does a true solution differ from a colloidal solution ?


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.


Name the process by which the various gases of the air are separated.


How would you separate iodine from a mixture of iodine and common salt ?


Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.


A solid mixture contains four constituents P, Q, R and S. P consists of tiny grains and it is mixed with
cement for plastering the walls. Q is a white solid which is recovered on a large scale from sea water by the
process of evaporation. R is in the form of tiny particles of a material whose corrosion is called rusting. And
S is a white solid which is used in making ordinary dry cells.

  1. What could P, Q, R and S be ?
  2. How would you separate a mixture containing P, Q, R and S ?

Complete the given analogy.

Murukku from hot oil: ______:: Coffee powder residue from decoction: ______


The property which allows the metals to be hammered into their sheets is ______.


The most reactive metal is ______.


Solids possess very high kinetic energy.


Gases do not diffuse very easily.


Define the term matter.


Write a scientific reason.

Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.


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