EXPLORE THE LIBRARY

Class 12 Chemistry questions for CBSE

Curriculum-aligned Chemistry questions for Class 12 under CBSE. Shortlist topics, practice at your pace, and make every answer count.

33questions available
Q21MCQ[1 Mark]

The given molecular diagram represents which compound?

AWater
BCarbon dioxide
CAmmonia
DMethane
Q22MCQ[1 Mark]

What is the maximum oxidation state of transition metals in the d-block?

A+7
B+6
C+3
D+2
Q23MCQ[1 Mark]

Which of the following is a general property of transition elements?

AInability to form complexes
BLow melting points
CFormation of colored compounds
DHigh electronegativity
Q24MCQ[1 Mark]

Which of the following applications is most closely associated with d- and f-block elements?

AHousehold cleaners
BFood preservatives
CCatalysts in industrial processes
DBuilding materials
Q25MCQ[1 Mark]

Conductance of an electrolyte solution depends on which of the following factors?

AConcentration of ions
BAll of the above
CType of ions
DTemperature
Q26MCQ[1 Mark]

The standard electrode potential is measured under which conditions?

A1 M concentration
B25 °C temperature
CAll of the above
D1 atm pressure
Q27MCQ[1 Mark]

Corrosion is primarily an example of which type of electrochemical process?

AConductivity
BReduction
COxidation
DElectrolysis
Q28MCQ[1 Mark]

The integrated rate equation for a first-order reaction is given by which of the following formulas?

A= [A]0 e^(-kt)
B1/[A] = kt + 1/[A]0
Cln[A] = -kt + ln[A]0
D= [A]0 + kt
Q29MCQ[1 Mark]

The rate of reaction is defined as the change in concentration of reactants or products per unit time. Which of the following correctly represents this?

Ak[A]^n
B1/t
Ct - [A]0
Dd[A]/dt
Q30MCQ[1 Mark]

According to the Arrhenius equation, what is the relationship between the rate constant and temperature?

ANo relationship
BDirectly proportional
CInversely proportional
DExponential relationship
Q31MCQ[1 Mark]

A solution exhibits a decrease in vapor pressure upon addition of a solute. This is an example of which colligative property?

AVapor pressure lowering
BFreezing point depression
CBoiling point elevation
DOsmotic pressure
Q32MCQ[1 Mark]

Raoult's Law primarily applies to which type of solution?

ADilute solutions
BIdeal solutions
CNon-ideal solutions
DConcentrated solutions
Q33MCQ[1 Mark]

Which of the following is NOT a type of solution?

ASuspension
BPure substance
CColloidal solution
DAqueous solution