MCQs for Science Class 9 with Answers Chapter 1 Matter in Our Surroundings
Students of class 9 Science should refer to MCQ Questions Class 9 Science Matter in Our Surroundings with answers provided here which is an important chapter in Class 9 Science NCERT textbook. These Multiple Choice Questions have been prepared based on the latest CBSE and NCERT syllabus and examination guidelines for Class 9 Science. The following MCQs can help you to practice and get better marks in the upcoming class 9 Science examination
Question. You can separate a mixture of sand, salt and water by:
(a) filtration and distillation
(b) decantation and evaporation
(c) filtration and decantation
(d) decantation and crystallization
Question. The substance with least inter-particle space is
(b acetic acid
Question. Which of these choices is defined “Standard Pressure”?
(a) 14.7 psi
(b) 1 atm
(c) 760 torr
(d) All of these
Question. The evaporation of a liquid can be best carried outin a
(b) China dish
(c) test tube
Question. The state of matter which consists of super energetic particles in the form of ionized gases is called
(a) gaseous state
(b) liquid state
(c) Bose-Einstein condensate
(d) plasma state
Question. Which of the following pair of gases cannot beseparated by diffusion method?
(a) SO2 and H2
(b) CO2 and N2O
(c) NH3 and N2
(d) CO2 and H2
Question. The process of evaporation causes:
(c) increase in temperature
(d) none of these
Question. Ice floats on the surface of water because:
(a) it is heavier than water
(b) the density of both water and ice is the same
(c) ice is lighter than water
(d) none of these
Question. In which form, do the water molecules have less kinetic energy?
(d) All of them have equal kinetic energy
Question. Which of the following describes the liquid phase?
(a) It has a definite shape and a definite volume.
(b) It has a definite shape but not definite volume.
(c) It has a definite volume but not a definite shape.
(d) It has neither a definite shape nor a definite volume.
Question. Which of the following statements is not correct?
(a) Matter is continuous in nature.
(b) Inter-particle spaces are maximum in the gaseous state of a substance.
(c) Particles which constitute the matter follow a zigzag path.
(d) Solid state is the most compact state of a substance.
Question. Kinetic energy of molecules is directly proportional to
(c) both (a) and (b)
(d) atmospheric pressure
Question. The inter-particle force are the strongest in
(b) methyl alcohol
(d) sodium chloride
Question. The substance having the maximum tendency to flowis
(c) sodium chloride
Question. Alcohol exists as a liquid at room temperature because
(a) the intermolecular forces are strong enough to keep its particles bound to each other
(b) its melting point is below room temperature
(c) it is highly compressible
(d) both (a) and (b)
Question. Which of the following statement is NOT true?
(a) A mixture of water and milk can be separated by filtration.
(b) A mixture of powdered salt and sugar can be separated by fractional crystallisation.
(c) Loading is a process which involves alum.
(d) Salt from sea water is obtained by evaporation.
Question. Which of the following is an example of a solid-in-gasmixture?
Question. The electric bulb on long use forms a black coating on its inner surface. The process associated with this is
(a) melting of tungsten
(b) sublimation of tungsten
(c) oxidation of tungsten
(d) reduction of tungsten
Question. If a few spoons of salt are dissolved in pure water then
(a) its b.pt. becomes less than 100cC
(b) its b.pt. becomes more than 100cC
(c) its freezing point becomes more than 0cC
(d) none of these
Question. Sugar syrup, usually used to coat sweets with sugar, becomes hard when cooled. From this we can conclude that sugar syrup is:
(a) a saturated solution
(b) an unsaturated solution
(c) not a solution
(d) none of these
Question. To separate the solids which are insoluble in liquidssuch that solid is heavier than liquid:
(a) sedimentation and decantation
(b) evaporation and condensation
(d) condensation and crystallization
Question. Which changes of state occur during distillation?
(a) Boiling followed by filtration
(b) Boiling followed by condensation
(c) Condensation followed by boiling
(d) Filtration followed by boiling
Question. The value of latent heat of vaporisation of water kcal/kg is
Question. A saturated salt water solution was heated and allowed to cool without adding any more salt. What will happen?
(a) Some salt appears to settle at the bottom.
(b) Some more salt can be dissolved now.
(c) No change takes place.
(d) Both (a) and (b)
Question. When liquid starts boiling, further heat energy which is supplied
(a) is lost to the surroundings as much
(b) increases the temperature of the liquid
(c) increases the kinetic energy of the particles in the liquid
(d) is absorbed as latent heat of vaporisation by the liquid.
Question. The forces of attraction between the particles of matter is maximum in
(a) iron rod
(b) kerosene oil
(d) dry air
Question. Large volume of Compressed Natural Gas (CNG) is available in small cylinders to us due to its property of
(a) high inflammability
(b) easy availability
(c) high compressibility
(d) low density
Question. Which of the following statements about evaporation is incorrect?
1. It is bulk phenomena.
2. It is a fast process.
3. It takes place at all temperatures.
(a) 2 and 3
(b) 1 and 2
(c) 1 and 3
(d) 1, 2 and 3
Question. Evaporation is directly proportional to
2. surface area
4. wind speed
(a) 1 and 4
(b) 2 and 3
(c) 3 and 4
(d) 2, 3 and 4
Question. Which of the following indicates the relative randomness of particles in the three states of matter?
(a) Solid > Liquid > Gas
(b) Liquid < Solid < Gas
(c) Liquid > Gas > Solid
(d) Gas > Liquid > Solid
Question. Two miscible liquids having different boiling pointscan be separated by:
(c) fractional distillation
Question. In an experiment oxygen was added to hydrogen Page 4 and heated. On burning a substance containing both oxygen and hydrogen water was formed. What is this substance?
Question. Which of the following has highest kinetic energy?
(a) Particles of ice at 0cC
(b) Particles of water at 0cC
(c) Particles of water at 100cC
(d) Particles of steam at 100cC
Question. A gas can be best liquefied
(a) by increasing the temperature
(b) by lowering the pressure
(c) by increasing the pressure and reducing the temperature
(d) none of these
Question. Which of the following is not correct regarding gases?
(a) Gases exert pressure.
(b) Gases have large intermolecular spaces.
(c) Gases have weak tendency to diffuse.
(d) Gases have weak intermolecular forces of attraction.
We hope the above multiple choice questions for Class 9 Science for Chapter 1 Matter in Our Surroundings provided above with answers based on the latest syllabus and examination guidelines issued by CBSE, NCERT and KVS are really useful for you. Matter in Our Surroundings is an important chapter in Class 9 as it provides very strong understanding about this topic. Students should go through the answers provided for the MCQs after they have themselves solved the questions. All MCQs have been provided with four options for the students to solve. These questions are really useful for benefit of class 9 commerce students. Please go though these and let us know if you have any feedback in the comments section.