CBSE Class 9 Science Exploring Mixtures and Their Separation (Class 9 NCERT New) Quiz 13

1. Which one is true solution?

A Sugar sol B Blood C Starch D Ink

2. Which one of the following is a suspension?

A Mud in water B Saltwater C Blood D None of these

3. Which one of the following is most likely to exhibit Tyndall effect?

A Sugar and water mixture B Potash alum and water mixture C Chalk powder and water mixture D Potassium permanganate and water mixture

4. Which one of the following is not a chemical change?

A Formation of curd B Ripening of banana C Sublimation of naphthalene D Corrosion of photo frame

5. Which one of the following is not a property of solution:

A Solution is a homogeneous mixture B Solution does not scatter light C Path of light is visible in solution D Solute particles do not settle down when left undisturbed

6. Which one of the following is not a solution:

A Brass B Lemonade C Saltwater D Milk

7. White gold used in jewellery contains two elements, gold and palladium. A jeweller has two different samples that are both identical in appearance and have a uniform composition throughout. What can be said about the samples?

A The materials are heterogeneous mixtures and can be classified by their components B These are homogeneous mixture and can be classified as metallic alloys. C The samples have variable compositions and are classified as metallic solutions. D The samples are heterogeneous mixtures that can be separated by using magnetic properties.

8. You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture?

A Evaporation B Simple distillation C Fractional distillation D Crystallization

9. Which of the following is an heterogenous mixture?

A salt solution B sand and water suspension C Kola Champagne D bronze

10. Dyes in water soluble markers may be separated by means of

A Simple distillation B Crystallisation C Chromatography D Filtration