Advertisements
Advertisements
प्रश्न
One of the following represents the solution of solid in a solid. This one is :
पर्याय
boron
brass
beryllium
bread
उत्तर
brass
Brass is an example of solution of solid in solid. It is an alloy of copper and zinc.
APPEARS IN
संबंधित प्रश्न
Gases have definite volume but no definite shape.
All kinds of matter
When a gas jar containing air is inverted over a gas jar containing bromine vapour, the red-brown bromine vapour diffuse into air. Explain how bromine vapour diffuse into air.
Explain why, osmosis can be considered to be a special kind of diffusion. Classify the following into
(i) osmosis, and (ii) diffusion :
- swelling up of a raisin on keeping in water
- spreading of virus on sneezing
- earthworm dying on coming in contact with common salt
- shrinking of grapes kept in thick sugar syrup
- preserving of pickles in salt
- spreading of smell of cake being baked in the kitchen
- aquatic animals using oxygen dissolved in water during respiration
Name a liquid which can be classified as a pure substance and conducts electricity.
What name is given to those elements which are neither good conductors of electricity like copper nor insulators like sulphur ?
You are given two liquids, one a solution and the other a compound. How will you distinguish the solution from the compound ?
The element which is not common between the compounds called baking soda and soda ash is
Fill in the following blank :
Milk is a .................... solution but vinegar is a .................... solution.
Define Sol and give one example.
Name the process you would use to separate a mixture of water and alcohol.
What is chromatography ? State its two applications.
The correct increasing order of the boiling points of liquid oxygen, liquid argon and liquid nitrogen present in liquid air is :
Which one of the following scrap metal cannot be separated by magnetic separation ?
Tincture of iodine is a mixture of two materials X and Y. The material Y has a property that its solid form can be converted directly into vapours on heating by a process called Z.
- What could X be ?
- What could Y be ?
- Name the process Z.
- Which process would you use to recover both the components X and Y from tincture of iodine ?
- Which process can be used to recover only component Y from tincture of iodine ?
What's the solution?
We need to rub salt on a corncob, but only salt crystals are available.
The non S I and S I units of some physical quantities are given in column A and column B respectively. Match the units belonging to the same physical quantity:
| (A) | (B) | ||
| (a) | degree celsius | (i) | kilogram |
| (b) | centimetre | (ii) | pascal |
| (c) | gram per centimetre cube | (iii) | metre |
| (d) | bar | (iv) | kelvin |
| (e) | milligram | (v) | kilogram per metre cube |
Liquids cannot be compressed and they have fixed volume.
Give an example of a molecule.
Write a scientific reason.
Lemon sherbat has sweet, sour and salty taste and it can be poured in a glass.
