Which of the following is NOT an example of homogenoud mixture ?
Oil in water
The correct answer is Option 4 i.e. Oil in water
A homogeneous mixture is one in which the composition is uniform throughout, and the different components cannot be seen separately. Examples include:
Salt dissolved in water – forms a clear, uniform solution.
Sugar dissolved in water – also completely dissolves and looks the same throughout.
Copper sulphate powder in water – when fully dissolved, forms a blue-colored uniform solution.
However, oil in water is a heterogeneous mixture. The two substances do not mix uniformly and form separate layers because oil is immiscible in water. You can see oil droplets or a layer floating on the surface, which means the mixture is not uniform.
Which of the following statements is correct according to the law of conservation of mass?
Which of the following is formed when carbon dioxide reacts with calcium hydroxide?
Which of the following types of reaction represents formation of slaked lime from calcium oxide and water?
What is used in the preparation of calcium sulphate hemihydrate?
What is used to remove permanent hardness of water?
For preparation of which of the following compounds is the chlor -alkali process used?
Which of the following is the molecular mass of HNO3?
Which of the following statements is correct according to the law of conservation of mass?
Which of the following is formed when carbon dioxide reacts with calcium hydroxide?
Which of the following types of reaction represents formation of slaked lime from calcium oxide and water?
Which of the following has a pH value of 7?