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प्रश्न
Name a non-metal which is a good conductor of electricity.
उत्तर
Graphite is a non-metal that is a good conductor of electricity.
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संबंधित प्रश्न
Solids have definite shape and definite volume.
Fill in the blank
Liquids have a definite ______
All kinds of matter
State two characteristics of matter demonstrated by Brownian motion.
Name two solid, two liquid and two gaseous elements at the room temperature.
Out of a colloid, solution and a suspension :
which one has the smallest particles ?
What is the name of the clear liquid formed when a solid dissolves in a liquid ?
Which of the following contains less solute at a given temperature and pressure ? Unsaturated solution or Saturated solution.
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
What do you understand by the statement " the solubility of copper sulphate in water at 20°C is 20.7 g" ?
One of the following liquids will leave behind a residue on heating. This one is :
Describe a method to separate a mixture of camphor and sand.
Which method is better for recovering sugar from sugar solution : evaporation or crystallisation ? Give reason
for your answer.
Which of the following cannot be separated from air by the process of fractional distillation ?
You are given a mixture of iodine in alcohol called tincture iodine. Which method will you use to recover both, iodine as well as alcohol, from this mixture ?
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 ?
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
Asmita went to buy an earthen pot. There she saw many things kept for sale.
From what substance has the potter made all the things?
A standard sheet of paper is about ______ of atoms thick
The pressure of gases does not depend on the temperature of the gas and the volume it occupies.
