Solution:

Solution:

Explanation:

The chemical formula of ferrous sulphate is FeSO_4.

The cationic part is ferrous i.e Fe⁺² while the anionic part is sulphate i.e SO₄^2-.

Since the charge on both species is equal and opposite i.e 2 , so they balance each other in the compound. 

Final Answer:

Hence, the correct chemical formula of ferrous sulphate is FeSO₄.. 

A: Surface tension

B: Vapour pressure

C: Osmotic pressure

D: Viscosity

Solution:

Correct option is: (C) osmotic  pressure.

Explanation:-

Isotonic solutions have the same osmotic pressure because they have the same solute concentration. 

Osmotic pressure depends only on solute concentration and temperature. 

Solution:

Explanation:

• Separation of immiscible liquids can be done by a separating funnel.
• The two liquids are put into the funnel and left for some time. 
• After some time that settles out and forms two different layers. 
• The cork of the funnel is opened to allow the bottom liquid to flow.
• The bottom liquid is collected in another vessel.

Final Answer: Hence Separation of immiscible liquids can be done by a separating funnel.

A. Al (OH)₂

B. Al (OH)₃

C. Al₂ (OH)₃

D. Al₂ (OH)

Solution:

Explanation:-

The atomic number of Aluminium is 13 and its electronic configuration is [Ne]3s²3p¹.

 It contain three electron in its valence shell so in a neutral state it can expand it covalency upto 3 So the formula becomes Al (OH)₃

A: Separating funnel

B: Fractional distillation

C: Chromatography

D: Sublimation

Solution:

Correct Option is: (A)

Separating funnel

Explanation:

• Immiscible liquids are those which don't dissolve into each other
• They can be separated by using a separating funnel.
• Fractional distillation is used to separate two miscible liquids which have significant differences in their boiling point.
• Chromatography  is a laboratory method used for the separation of a mixture into its components.
• Sublimation Is  conversion of a substance from the solid to the gaseous state without becoming liquid.