Skip to main content

Edugain: IX Ch:Is matter around us pure :MCQ’S

Image
By
Choose the best correct option in the following as :-
Q1. The used tea learns are separated from prepared tea by the method of:
a. Centrifugation   b.  Filtration   c. Evaporation   d. Sublimation
Q2. Separating funnel technique is used to separate components which are -
a.Miscible liquids   b. Immiscible liquids    c. Solid and  liquid  d. Solid and gas
Q3. Centrifugation technique is used to separate:
a. Cream from milk b. Ammonium chloride and salt c. Alcohol & water d. iron filling  and sulphur
Q4. Which one is a correct method of separating is on filings from sulphur powder.
a. Heating with water                       b. passing the mixture over a magnet    
c. heating in a china dish                 d. using a separating funnel.
Q5. The process of cooling a hot and concentrate solution of a substance to obtain crystals of the solute called
a.Evaporation b. Sublimation c. Crystallization d. Chromatography
Q6. Identify the method used to separate more than two components of a mixture whose difference in being  point is <25°C.
a.Distillation b. Fractional distillation c. Crystallization d.   Centrifugation.
Q7. A simple distillation technique used for the mixture if.
a. Two liquid miscible                                                b. They boil without decomposition  
c.  They  have sufficient  difference  in their boiling points.      d. All the above.
Q8. For water purification system in water work, the following steps are carried out.
1.Loading 2. Sedimentation. 3. Chlorination 4.Filtration : the correct sequence of steps is
a.2,1,4,3      b. 2,3,4,1     c. 2,1,3,4 d. 4,1,2,3
Q9. A mixture containing sand, Sodium chloride, Ammonium chloride and iron filing may be separated by  using following steps. The correct sequence of steps would be.
1.By using magnet           2. Filtration       3. Evaporation    4. Sublimation
Q10. The process of crystallization used to.
a. Purify a large number of water soluble salts. b. Purification of salt that we get from sea water.
c. Separate crystals B alum (phitkari) from inpure sample. d. All the above.
You may also read these posts
CCE :IX Chapter: Is matter around us pure : MCQ’S
Read and Download
CCE :IX Chapter: Is matter around us pure : MCQ’S
Read and Download
CCE :IX Chapter: Is matter around us pure : MCQ’S
Read and Download
Fill in the blanks: IX:   Is matter around us pure  
Read and Download 
Test yourself: IX :Is matter around us pure :MCQ’S
Read and Download  

Comments

Post a Comment

CBSE ADDA :By Jsunil Sir : Your Ultimate Destination for CBSE Exam Preparation and Academic Insights

Class 09 Atoms and Molecules Numerical Problem based on Law of chemical Combination(Solved)

By
Class 09 Atoms and Molecules Numerical Problem based on Law of chemical Combination Law of conservation of mass Law of constant proportion Empirical formula 1. If 10 grams of CaCO 3 on heating gave 4.4g of CO 2 and 5.6g of CaO, show that these observations are in agreement with the law of conservation of mass.(Based on Law of conservation of mass) Solution:  Mass of the reactants = 10g ;  Mass of the products = 4.4 + 6.6g = 10g Since the mass of the reactants is equal to the mass of the products, the observations are in agreement with the law of conservation of mass. 2. 1.375 g of cupric oxide was reduced by heating and the weight of copper that remained was 1.098g.  In another experiment 1.179 g of copper was dissolved in nitric acid and the resulting copper nitrate was converted into cupric oxide by ignition . The weight of cupric oxide formed was 1.476 g. which law of chemical combinations does this data state? Solution: in first experiment: Copper oxide = 1....
Post a Comment
Read more

Class 10 Chapter 02 Acid Bases and Salts NCERT Activity Explanation

By
NCERT Activity Chapter 02 Acid Bases and Salt Class 10 Chemistry Activity 2.1 Indicator Acid Base Red litmus No Change Blue Blue Litmus Red No change Phenolphthalein Colourless Pink Methyl Orange Pink   Yellow Indictors are substance which change colour in acidic or basic media. Activity 2.2 There are some substances whose odour changes in in acidic or basic media. These are called olfactory indicators. Like onion vanilla, onion and clove. These changes smell in basic solution. Activity 2.3 Take about 5 mL of dilute sulphuric acid in a test tube and add few pieces of zinc granules to it. => You will observe bubbles of hydrogen gas on the surface of zinc granules. Zn + H2SO4 --> ZnSO4 + H2 => Pass the Hydrogen gas through the soap solution. Bubbles formed in the soap solution as Hydrogen gas it does not get d...
Post a Comment
Read more

Structure of Matter class07

By
The language of chemistry class 7 Basic science soled questions. Q. What is chemistry? Ans: Chemistry is a branch of science in which we study the composition, structure, properties and change of matter. Q. What is matter? Ans: Anything that is around us having some mass and occupies space is called matter. Q. What are the different classifications of matter? Ans: Matters are classified into element, compound and mixture. Q. What is element? Ans: Elements are the purest form of substance (matter) made up of same kinds of particles. The smallest unit of element is an atom. eg. Hydrogen, oxygen, carbon. Q. What is compound?            See full post   The language of chemistry class 7 Basic science Class 07 Basic sciences Chapter the Language of Chemistry A. Answer these questions 1. What does the formula of a substance tell us? Answer: Formula of a compound or an element represents the name and number of atoms present ...
Post a Comment
Read more

Living science ratna sagar class 6 solutions

By
Ratna sagar living science 6 answers by jsunil. Class6 Living science solution Term-1 Living Science Solution chapter-1 Source of food Download File Living Science Solution chapter-2 Component of food Download File Living Science Solution chapter-3 Fibre to fabric Download File Living Science Sol ch-4 Sorting of material into group Download File Living Science Soln ch-5 Separation of substance Download File Living Science Solution chapter-6 Change around Us Download File Living Science Solution ch-7 Living and Non Living Download File Living Science Solution ch-8 Getting to Know Plants Download File Living Science Sol ch-9 The Body and Its movements Download File Visit given link for full answer Class6 Living science solution Term-II
Post a Comment
Read more

thales theorem proof -Basic Proportionality Theorem

By
10th math Triangles Thales theorem and angle bisector theorem X_similar_triangle_guess_questions test Papers Download File X EBOOk Chapter Similar Triangle Download File X Maths: Similar Triangle:Optional Exercise Solved Download File Activity for Proof of BPT Theorem [Thales Theorem] Download File
Post a Comment
Read more