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प्रश्न
Which one is a kind of matter:
विकल्प
light
petroleum
sound
heat
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उत्तर
petroleum
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संबंधित प्रश्न
Differentiate between an atom and a molecule.
Name the terms for the change of a solid into liquid.
Name the scientist who studied the movement of pollen grains suspended in water through a microscope. What is this phenomenon known as?
Describe in your own words, what happens to the particles when salt dissolves in water.
What are the characteristics of matter?
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 :
Fill in the following blanks with suitable words :
An element is made up of only one kind of ........
Name a metal which is yellow in colour.
“Is malleable and ductile” best describes :
Iron powder and sulphur powder were mixed together and divided into two parts A and B. When part A was heated strongly over a burner, then a substance C was formed. The part B was, however, not heated at all. When dilute hydrochloric acid was added to substance C, then gas D was evolved and when dilute hydrochloric acid was added to part B then gas E was evolved.
- What type of substance is B ?
- What type of substance is C ?
- Name the gas (i) D, and (ii) E ?
- State one characteristic property of gas D.
- Write one test to identify gas E.
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
Which of the following represents the solubility of sugar in water at 20°C ?
Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.
The technique which is used to separate particles of a solid suspended in a liquid quickly is called :
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
There are three liquids A, B and C, all having different densities and different boiling points. Liquids A and C are organic in nature whereas liquid B is considered to be inorganic. When liquids A and B are put together in a container, they form a single layer. On the other hand, when, liquids B and C are mixed, they form two separate layers :
(a) Which process will you use to separate a mixture of A and B ?
(b) Which method will you use to separate a mixture of B and C ?
(c) Name the liquids which would behave like (i) A (ii) B and (iii) C.
The given mixture contains three constituents A, B and C. The constituent A is a yellow coloured, solid element which dissolves in a liquid D. The constituent B is a blue coloured salt which is insoluble in liquid D but dissolves easily in another liquid E. The constitudent C is a liquid which is used in cooking food and forms a solid fat on hydrogenation.
(a) What do you think could (i) constituent A, and (ii) liquid D be ?
(b) What could (i) constituent B, and (ii) liquid E be ?
(c) What could liquid C be ?
(d) How will you separate the mixture containing A, B and C ?
Differentiate between the-two characteristics of matter – ‘mass’ & ‘weight’.
______ is not made of matter.
