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Which of the Following Do Not Exhibit Tyndall Effect ? Starch Solution, Sugar Solution, Ink, Salt Solution, Copper - Science

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प्रश्न

Which of the following do not exhibit Tyndall effect ?

Starch solution, Sugar solution, Ink, Salt solution, Copper sulphate solution, Ammonium chloride solution, Fog, Smoke, Car exhausts.

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उत्तर

Sugar solution, salt solution, copper sulphate solution, and ammonium chloride solution do not show Tyndall effect because the particles in these solutions are too small to scatter light in different directions.

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  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 2: Is Matter Around Us Pure - Very Short Answers [पृष्ठ ८१]

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लखमीर सिंह Chemistry [English] Class 9
पाठ 2 Is Matter Around Us Pure
Very Short Answers | Q 45 | पृष्ठ ८१

व्हिडिओ ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्‍न

Define matter.


What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?


State two physical properties on the basis of which metals can be distinguished from non-metals.


Give reason why copper metal is used for making electric wires.


What are (i) metals (ii) non-metals, and (iii) metalloids ? Give two examples each of metals, non-metals and metalloids.


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.

There are three substances X, Y and Z. The substance X does not have a fixed melting point or boiling point and it still shows the individual properties of its constituents. The substance Y is a pure substance which occurs in nature as such. The substance Y has a fixed melting point and boiling point but it cannot be broken down into simpler substances by any chemical means. The substance Z is also a pure substance whose properties are entirely different from those of its constituents. The substance Z can, however, be divided by electrolysis into two substances which belong to the same class of substances as Y.

  1. What type of substance could X be ? Name one substance like X.
  2. What type of substance could Y be ? Name one substance like Y.
  3. What type of substance could Z be ? Name one substance like Z.
  4. Which process involves absorption or release of an appreciable amount of energy : formation of substance X or formation of substance Z ?
  5. Name the three groups into which all the substances like Y are divided on the basis of their properties.

Choose the correct answer.

A 5 per cent sugar solution means that :


What is the difference between solutions and colloids ?


What difference in the property of two miscible liquids enables their separation by fractional distillation ?


State whether the following statement are true or false :

Salt and water can be recovered from an aqueous salt solution by the process of evaporation.


How is cream separated from milk ?


Asmita went to buy an earthen pot. There she saw many things kept for sale.
What is the difference between a substance and an object?


Which among the following ______ will get attracted to by magnet?


A standard sheet of paper is about ______ of atoms thick


Atoms or groups of atoms having a charge are called ______.


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The fluidity of solids: ______.


Evaporation is always accompanied by ______ in temperature. 


Write scientific reason.

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


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