Check the below Matter in our Surroundings Class 9 MCQ for Science Chapter 1 with Answers available with PDF free download. MCQ Questions for Class 9 Science with Answers were prepared based on the latest syllabus and examination pattern issued by CBSE, NCERT and KVS. Our teachers have provided below Matter in Our Surroundings Class 9 Science MCQs Questions with answers which will help students to revise and get more marks in exams
Matter in Our Surroundings Class 9 Science MCQ Questions with Answers
Refer below for Matter in our Surroundings Class 9 MCQ with solutions. Solve MCQ questions and compare them with the answers provided below
Question. When a crystal of potassium permanganate is placed at the bottom of water in a beaker, the water in the whole beaker turns purple on its own, even without stirring. This is an example of :
Question. Which one of the following statements is not true ?
(a) the molecules in a solid vibrate about a fixed position
(b) the molecules in a liquid are arranged in a regular pattern
(c) the molecules in a gas exert negligibly small forces on each other, except during collisions
(d) the molecules of a gas occupy all the space available
Question. A few substances are arranged in the increasing order of ‘forces of attraction’ between their particles. Which one of the following represents the correct arrangement ?
(a) water, air, wind
(b) air, sugar, oil
(c) oxygen, water, sugar
(d) salt, juice, air
Question. Which one of the following statement is correct in respect of fluids ?
(a) only gases behave as fluids
(b) gases and solids behave as fluids
(c) gases and liquids behave as fluids
(d) only liquids are fluids
Question. The best evidence for the existence and movement of particles in liquids was provided by :
(a) John Dalton
(b) Ernest Rutherford
(c) J.J. Thomson
(d) Robert Brown
Question. A form of matter has no fixed shape but it has a fixed volume. An example of this form of matter is :
(c) carbon steel
(d) carbon dioxide
Question. In which of the following conditions, the distance between the molecules of hydrogen gas would increase ?
(i) increasing pressure on hydrogen contained in a closed container
(ii) some hydrogen gas leaking out of the container
(iii) increasing the volume of the container of hydrogen gas
(iv) adding more hydrogen gas to the container without increasing the volume of the container
(a) (i) and (iii)
(b) (i) and (iv)
(c) (ii) and (iii)
(d) (ii) and (iv)
Question. Out of the following, an example of matter which can be termed as fluid is :
Question. Which of the following statement is incorrect ?
(a) the particles of matter are very, very small
(b) the particles of matter attract one another
(c) the particles of some of the matter are moving constantly
(d) the particles of all the matter have spaces between them
Question. When a gas jar containing colourless air is kept upside down over a gas jar full of brown-coloured bromine vapour, then after some time, the brown colour of bromine vapour spreads into the upper gas jar making both the gas jars appear brown in colour. Which of the following conclusion obtained from these c observations is incorrect ?
(a) bromine vapour is made of tiny particles which are moving
(b) air is made up of tiny particles which are moving
(c) the particles of bromine are moving but those of air are not moving
(d) even though bromine vapour is heavier than air, it can move up against gravity
Question. When a gas jar full of air is placed upside down on a gas jar full of bromine vapours, the red-brown vapours of bromine from the lower jar go upward into the jar containing air. In this experiment :
(a) air is heavier than bromine
(b) both air and bromine have the same density
(c) bromine is heavier than air
(d) bromine cannot be heavier than air because it is going upwards against gravity
Question. Name two processes which provide the best evidence for the motion of particles in matter.
Diffusion and Brownian motion
Question. Arrange the following substances in increasing order of force of attraction between their particles (keeping the substance having the minimum force of attraction first) : Water, Sugar, Oxygen
Oxygen < Water < Sugar
Question. Honey is more viscous than water. Can you suggest why ?
The force of attraction between the particles of honey is much more than the force of attraction between the particles of water
Question. Which single term is used to describe the mixing of copper sulphate and water kept in a beaker, on its own ?
Question. When sugar is dissolved in water, there is no increase in the volume. Which characteristic of matter is illustrated by this observation ?
The particles of a liquid (here water) have spaces between them
Question.. Name one property of liquids and gases which tells us that their molecules are moving constantly.
Question. Fill in the following blanks with suitable words :
Question. The arrangement of particles is less ordered in the……………….state. However, there is no order in the……….state.
liquid ; gaseous
Question. The smell of perfume gradually spreads across a room due to…………
Question. Solid, liquid and gas are the three…………of matter.
Question. At room temperature, the forces of attraction between the particles of solid substances are…………….than those which exist in the gaseous state.
Question. The best evidence that the particles of matter are constantly moving comes from the studies of ………… and …………
diffusion ; Brownian motion
Question. Even two or three crystals of potassium permanganate can impart colour to a very large volume of water. Which characteristic of particles of matter is illustrated by this observation ?
Each crystal of potassium permanganate must be made up of millions of small particles
Question. When an incense stick (agarbatti) is lighted in one corner of a room, its fragrance spreads in the whole room quickly. Which characteristic of the particles of matter is illustrated by this observation ?
The particles of matter are constantly moving in all the directions
Question. A piece of chalk can be broken into small particles by hammering but a piece of iron cannot be broken into small particles by hammering. Which characteristic of the particles of matter is illustrated by these observations ?
The particles of matter attract one another (some attract less as in the case of chalk but some attract much more as in the case of iron)
Question.. Which of the two diffuses slower : bromine vapour into air or copper sulphate into water ?
Copper sulphate into water
Question. State whether the following statement is true or false :
Red-brown bromine vapour diffuse into air in a gas jar but the colourless air molecules do not diffuse into bromine vapour.
Question. What is the scientific name of particles which make up matter ?
Atoms or Molecules
Question.. What is the general name of :
(a) rigid form of matter ?
(b) fluid forms of matter ?
(b) Liquid and Gas
Question.. If the fish is being fried in a neighbouring home, we can smell it sitting in our own home. Name the process which brings this smell to us.
Question.. A bottle of perfume was opened in a room. The smell of its vapours spread in the entire room. Name the property of gases which is responsible for this behaviour of perfume vapours.
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