Advertisements
Advertisements
प्रश्न
One of the following liquids will leave behind a residue on heating. This one is :
विकल्प
brine
bromine
mercury
alcohol
उत्तर
brine
Brine is salt solution. When it is heated, water will evaporate and salt will be left as residue.
APPEARS IN
संबंधित प्रश्न
Name the terms for the change of a solid into liquid.
All kinds of matter
Name a non-metal which is a good conductor of electricity.
State two physical properties on the basis of which metals can be distinguished from non-metals.
State any two properties for believing that aluminium is a metal.
The elements which normally exist in the liquid state are :
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.
9.72 g of potassium chloride dissolves in 30 g of water at 70°C. Calculate the solubility of potassium chloride at that temperature.
One of the following does not show Tyndall effect. This one is :
One of the following represents the solution of solid in a solid. This one is :
Tincture of iodine has antiseptic properties. This solution is made by dissolving :
State whether the following statement are true or false :
Alcohol can be separated from a mixture of alcohol and water by a separating funnel.
Name the process which can be used to purify an impure sample of copper sulphate.
Select the correct answer from A, B, C, D & E for the statement given below:
An atom or group of atoms _________ having a resultant charge.
The property which allows the metals to be hammered into their sheets is ______.
The particles in the matter are extremely small and can be seen even with a powerful microscope.
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 |
Give some examples of the Tyndall effect observed in your surroundings?
______ is so hard that it can scratch glass.
Define the term matter.
