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प्रश्न
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
उत्तर
Milk is a colloidal solution but vinegar is a true solution.
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संबंधित प्रश्न
Intermolecular space is maximum in .......... less in ............ and the least in .........
The inter-molecular force is maximum in
Gases have definite volume but no definite shape.
What are the conditions for 'something' to be called 'matter'?
Name two processes which provide the best evidence for the motion of particles in matter.
When a crystal of potassium permanganate is placed in a beaker, its purple colour spreads throughout the water. What does this observation tell us about the nature of potassium permanganate and water?
Name a liquid which can be classified as a pure substance and conducts electricity.
Name the property which allows metals to be hammered into thin sheets.
What elements do the following compounds contain ?
Sugar, Common salt
State whether the following statement is true or false :
Bread is an example of solid foam.
One of the following liquids will leave behind a residue on heating. This one is :
Which method is better for recovering sugar from sugar solution : evaporation or crystallisation ? Give reason
for your answer.
The material which is added to water during purification process at the water works so as to disinfect it is :
The liquid air has three components X, Y and Z whose boiling points are : –186°C, –183°C and –196°C,
respectively. When liquid air is fed into a tall fractional distillation column from near its bottom and warmed
up slowly :
(a) Which component will be collected from near the bottom of the fraction distillation column ? Why ?
(b) Which component will be collected from the top part of the fractional distillation column ? Why ?
(c) Which component will be collected from the middle part of the fractional distillation column ? Why ?
(d) What could the component X, Y and Z be ?
Complete the given analogy.
Murukku from hot oil: ______:: Coffee powder residue from decoction: ______
The property which allows the metals to be hammered into their sheets is ______.
Name the metals that are used in jewellery.
You want to wear your favourite shirt to a party, but the problem is that it is still wet after a wash. What steps would you take to dry it faster?
Define the term matter.
