हिंदी

Name the Process Which Can Be Used to Recover Salt from an Aqueous Salt Solution.

Advertisements
Advertisements

प्रश्न

Name the process which can be used to recover salt from an aqueous salt solution.

एक पंक्ति में उत्तर
Advertisements

उत्तर

Evaporation can be used to obtain salt from an aqueous salt solution.

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 2: Is Matter Around Us Pure - Very Short Answers [पृष्ठ १०५]

APPEARS IN

लखमीर सिंग Chemistry [English] Class 9
अध्याय 2 Is Matter Around Us Pure
Very Short Answers | Q 21 | पृष्ठ १०५

वीडियो ट्यूटोरियलVIEW ALL [3]

संबंधित प्रश्न

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


A kind of matter which can sublime is


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


Name a metal which has no fixed shape.


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.

Explain what happens when a beam of light is passed through 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.


State whether the following statement are true or false :

Alcohol can be separated from a mixture of alcohol and water by a separating funnel.


Name the process which is used in milk dairies to separate cream from milk.


Name the process by which common salt is obtained from sea-water.


Fill in the following blanks with suitable words :

Miscible liquids are separated by .....................


Fill in the following blanks with suitable words :

The separation of liquids by fractional distillation is based on the difference in their .....................


Explain how, impure copper sulphate can be purified by crystallisation.


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 ?

Name the metals that are used in jewellery.


Solids do not flow.


Compressibility of solids: ______.


Define the term matter.


Write a scientific reason.

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


Define the term matter.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×