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What is the Most Common Way of Expressing the Concentration of a Solution ?

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What is the most common way of expressing the concentration of a solution ?

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उत्तर

Percentage method is the most common way of expressing the concentration of a solution.

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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 5 | पृष्ठ ७९

वीडियो ट्यूटोरियलVIEW ALL [3]

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Name the terms for the particles of matter which may or may not have independent existence.


Fill in the blank

All matter is made up of tiny particles called ______


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Name a metal which is soft and a non-metal which is hard.


Name a non-metal which is a good conductor of electricity.


Which type of elements, metals or non-metals, show the property of brittleness ?


Name two solid, two liquid and two gaseous elements at the room temperature.


Define solubility of a substance. How does it vary with temperature ?


What is a suspension ? Give two examples of suspensions.


How would you prepare a saturated solution of sodium chloride in water at 25°C ? What will happen if this  solution is cooled to 10°C ?


The solubility of ammonium chloride in water at various temperatures is given below :

Temperature : 10°C 20°C 40°C 60°C 80°C
Solubility : 24 g 37 g 41 g 55 g 66 g

What mass of ammonium chloride would be needed to make a saturated solution of ammonium chloride in fifty grams of water at 40°C ?


How will you separate camphor, common salt and iron nails from their mixture ?


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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.

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Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.


Select the correct answer from A, B, C, D & E for the statement given below:

An atom or group of atoms _________ having a resultant charge.


What's the solution?

We need to make a sherbet quickly for some guests. But we only have sugar candy in the house.


Which of the following statements are true for pure substances?

(i) Pure substances contain only one kind of particles

(ii) Pure substances may be compounds or mixtures

(iii) Pure substances have the same composition throughout

(iv) Pure substances can be exemplified by all elements other than nickel


______ is used for industrial refrigeration and transporting frozen food.


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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