Chemistry (General Concepts) MCQs with Answers

Which of the following cannot exist in solution?

• A.Na⁺
• B.Cl⁻
• C.O²⁻
• D.SO₄²⁻

Past Paper MCQ

In a solution, when water is used as a solvent, that solution is called?

• A.Aqueous Solution
• B.Colloidal Solution
• C.Saturated Solution
• D.Dilute Solution

What is the oxidation number of nitrogen in the molecule N2?

• A.0
• B.+1
• C.-3
• D.+5

Methylamine and hydrogen peroxide are liquids due to?

• A.Metallic bonding
• B.Ionic bonding
• C.Covalent bonding
• D.Hydrogen bonding

The amount of solute in a given amount of solvent is called concentration of solution. Which one of the following describes a dilute solution?

• A.No solute present in the solvent
• B.Large amount of solute in the solvent
• C.Equal amount of solute and solvent
• D.Small amount of solute in the solvent

If all the following liquids are at the same temperature, then the liquid having the least vapor pressure will be:

• A.Ethanol (C₂H₅OH)
• B.Diethyl ether (C₄H₁₀O)
• C.Acetone (C₃H₆O)
• D.Heptane (C₇H₁₆)

All of the following have two bond pairs and show linear geometry except?

• A.BeCl₂
• B.CO₂
• C.SnCl₂
• D.HCN

Ionic hydrides are formed by elements of ?

• A.Group-IA
• B.Group-VA
• C.Group-VIIA
• D.Group-IIIA

The state of hybridization of carbon atom in methane is ?

• A.sp
• B.sp²
• C.sp³
• D.sp³d

How many active sets of electrons are present in the central atom of H₂O?

• A.2
• B.3
• C.4
• D.5