Chemistry (General Concepts) MCQs with Answers

The value of Kc increases when ?

• A.Reactant concentration increases
• B.Catalyst is added
• C.Temperature decreases
• D.Product concentration increases

When you stir salt into water, you are making a _?

• A.Solution
• B.Suspension
• C.Colloid
• D.Compound

Which statement is incorrect about solution?

• A.The solution is a homogeneous mixture
• B.The solution is a heterogeneous mixture
• C.The particles of a solution cannot be seen with the naked eye
• D.The particles of a solution do not settle down when left undisturbed

Which of the following solutes decreases the solubility of H₂S in its aqueous solution?

• A.NaCl
• B.NaOH
• C.HCl
• D.NH₃

Which test is used to detect ketones?

• A.Iodoform test
• B.Tollens' test
• C.Fehling's test
• D.Brady's test (2, 4-DNP test)

One mole of NaCl contains approximately how many formula units?

• A.3.011 × 10²³
• B.1.204 × 10²⁴
• C.6.022 × 10²³
• D.9.033 × 10²³

According to VSEPR theory, the geometry of XeF4 is:

• A.Tetrahedral
• B.Square Planar
• C.Trigonal Bipyramidal
• D.Octahedral

When water is used as solvent, the process of solution is known as _?

• A.Solvation
• B.Hydrolysis
• C.Hydrogenation
• D.Hydration

Number of moles of solute dissolved in per liter of solution is called _?

• A.Molality
• B.Molarity
• C.Normality
• D.Mole fraction

What is the strongest type of van der Waals force?

• A.London dispersion forces
• B.Dipole-dipole forces
• C.Hydrogen bonding
• D.Dipole-induced dipole forces