Kerala SCERT Class 8 Science Chapter 4 Properties of Matter Question Answer Solution Here. Kerala Board Class 8 Students can find Here 4th Chapter Properties of Matter Notes provide by our Teacher. Important Question Answer from Chapter 4 Properties of Matter.
- Board- Kerala Board.
- Class – 8.
- Subject – Science Part 1
- Chapter – 4.
- Chapter Name – Properties of Matter.
- Topic – Question Answer Solution.
Question: (1) the fourth state of Matter is _____ ?
(a) Plasma
(b) Solid
(c) liquid
(d) Gas
Ans: – Plasma.
Question: (2) the substance when heated, changed directly into gas without forming liquid this phenomenon is called________?
(a) Sublimation
(b) Vaporisation
(c) Solidification
(d) Condensation
Ans: – Sublimation.
Question: (3) ______ is the spontaneous mixing of different particles having freedom of momentum?
(a) Diffusion
(b) Spreading
Ans: – Diffusion.
Question: (4) material made of particle of identical nature are called__________?
(a) Pure substance
(b) Impure substance
(c) Mixture
Ans: – Pure substance.
Question: (5) the substance made of particle of different nature are called______?
(a) Mixture
(b) Pure substance.
Ans: – Mixture.
Question: (6) the choice of the method of separation of component __________ on the properties of the components of a mixture?
(a) Depends
(b) In depends
Ans: – Depends.
Question: (7) when one component of the mixture is volatile and others do not vaporise under the same condition they can be ___________ by distillation?
(a) Separated
(b) Not separated
Ans: – Separated.
Question: (8) in order to separate insoluble particles in a liquid mixture on the basis of their mass different centrifuge is used this process is known as __________?
(a) Centrifugation
(b) Sublimation
(c) Condensation
(d) Distillation
Ans: – Centrifugation.
Question: (9) ___ is the method used to separate more than one solute dissolve in the same solvent?
Ans: – Chromatography.
SHORT QUESTION:
Question: (1) what is meant by capillarity?
Ans: – Capillarity is the phenomenon by which liquid rise through microspores against gravitation.
Question: (2) define chromatography?
Ans: – Chromatography is method used to separate more than one solute dissolved in same solvent.
Question: (3) define centrifugation?
Ans: – To separate insoluble particle in a liquid mixture on basis of their mass difference is used these process is known as centrifugation.
Question: (4) what is sublimation process?
Ans: – The process in which a solid, when heated change directly into gas without melting into liquid is called sublimation.
Question: (5) what is meant by distillation?
Ans: – When one component of mixture is violate and the other do not vaporise under the same condition they can be separated by distillation.
SHORT NOTE:
Question: (1) what is fractional distillation of curde oil?
Ans: – Crude oil which drilled out from the depth of earth is a mixture of hydrocarbons which do not have much difference in boiling point from this diesel, petrol; kerosene, naphtha etc are separated by fraction at distillation.
Question: (2) what is adsorption basis chromatography?
Ans: – The solute particle moves along with solvent which rises through the micro pores in the filter paper. Due to attraction between the filter paper and solute particle they get attracted to the surface of filter paper this is called adsorption.
Question: (3) what is chromatography method?
Ans: – Chromatography method is used to separate more than one solute dissolved in the same solvent .this method was first employed for separating coloured substance hence these process come to be known as chromatography.
chapter no. 4 Properties of Matter
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