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प्रश्न
Which one is a kind of matter:
विकल्प
light
petroleum
sound
heat
उत्तर
petroleum
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संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
Intermolecular force of attraction is maximum in ............ less in .......... and the least in .............
Name the terms for the change of a solid into liquid.
Define the following term of Atom .
Fill in the blank
Liquids have a definite ______
What are the two types of pure substances? Give one example of each type.
Give reason why graphite is used for making elecrode in a dry cell.
Define a compound. Give two points of evidence to show that sodium chloride is a compound.
Which of the following statements are true for pure substances ?
- pure substances contain only one kind of particles
- pure substances may be compounds or mixtures
- pure substances have the same composition throughout
- pure substances can be exemplified by all elements other than nickel
What is the difference between solutions and colloids ?
Classify the following into solutions, suspensions and colloids :
Soda-water, Milk, Brine, Blood, Ink, Smoke in air, Chalk water mixture, Milk of Magnesia, Shaving cream, Muddy river water.
What is the difference between colloids and suspensions ?
Name the process which can be used to recover salt from an aqueous salt solution.
How would you separate iodine from a mixture of iodine and common salt ?
How is water purified on a large scale at water works ? Explain with the help of a labelled diagram. Name the substance which is added to kill germs in the drinking water supply ?
What is fractional distillation ? What is the use of fractionating column in fractional distillation ?
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
Solid is an arrangement of particles ______.
Higher the temperature, the higher the kinetic energy of particles.
Compressibility of solids: ______.
