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Grade 12 Quizzes, Questions & Answers

Recent Grade 12 Quizzes

IB Chemistry HL: Mastering Redox Reactions Quiz

Questions: 13 | Attempts: 11 | Last updated: Aug 4, 2025

Sample Question
Deduce whether an element undergoes oxidation or reduction in reactions using oxidation numbers.

LEORA: loss electrons, oxidation, reducing agentGEROA: gain electrons, reduction, oxidizing agentLook at oxidation numbers of elements on both sides of chemical equations.

BEROA: balance electrons, both oxidation and reduction, neutral agent

TEGOA: take electrons, gain oxidation, reducing agent

MEROA: maintain electrons, no change, neutral agent

Advanced Thermal Physics: Concepts and Principles

Questions: 12 | Attempts: 25 | Last updated: Aug 4, 2025

Sample Question
3.1.1 State that temperature determines the direction of thermal energy transfer between two objects.

The weight of the objects determines the direction of thermal energy transfer.

Temperature determines the direction of thermal energy transfer between two objects. Direction: hot->cold

The size of the objects determines the direction of thermal energy transfer.

The color of the objects determines the direction of thermal energy transfer.

Advanced Entomology and Arthropod Biology Quiz

Questions: 30 | Attempts: 17 | Last updated: Aug 4, 2025

Sample Question
Co to jest?

Ssak

Ptak

CRUSTACEANSClass: MalacostracaOrder: AmphipodaCommon name: beach fleas/amphipods - Shrimp like profile- Detritivore (feeds on dead organic matter)- Alcohol preserve

Plaz

Biology Exam Review: Key Concepts and Metabolic Pathways Quiz

Questions: 22 | Attempts: 10 | Last updated: Aug 4, 2025

Sample Question
An anabolic metabolic pathway is one that stores matter in complex biomolecules. This statement is:

True

Partially True

False

Not Enough Information

IB Physics HL: Quantum and Nuclear Physics Mastery Quiz

Questions: 7 | Attempts: 10 | Last updated: Aug 4, 2025

Sample Question
Describe the photoelectric effect.

The photoelectric effect occurs at any frequency of light, but the intensity determines the number of electrons emitted.

The phenomenon where electrons are emitted from the surface of a metal after being exposed to light of a particular frequency called the threshold frequency. Light below the threshold frequency will not cause electrons to be emitted. Above the threshold frequency, the maximum KE of the electrons depends on the frequency of the incident light. The number of electrons emitted depends on the intensity of light, and not the frequency. Emission of electrons is instantaneous, and considers that light can act as particles called photons.

The photoelectric effect involves the emission of protons from a metal surface when exposed to light.

The photoelectric effect is a result of chemical reactions between light and the metal surface.

Advanced Trigonometric Concepts and Applications Quiz

Questions: 30 | Attempts: 18 | Last updated: Aug 4, 2025

Sample Question
1 Radian = .

45 Degrees

360 Degrees

180/? Degrees

90 Degrees

Advanced Trigonometry: Identities, Graphs, and Formulas

Questions: 14 | Attempts: 21 | Last updated: Sep 13, 2025

Sample Question
Graph one complete cycle of 4(cos 2x - ? /2).

4(cos 2x)

4(sin 2x)

4(cos2x−1/2)

4(cos x - 1/2)

Biochemistry Atoms & Bonds Fundamentals Quiz

Questions: 20 | Attempts: 17 | Last updated: Jan 8, 2026

Sample Question
What is an atom?

The smallest living organism

A type of rock formation

The basic unit of matter

A unit of speed

IB Physics HL: Energy Production and System Efficiency Quiz

Questions: 15 | Attempts: 12 | Last updated: Nov 11, 2025

Sample Question
State that thermal energy may be completely converted to work in a single process, but that continuous conversion of this energy into work requires a cyclical process and the transfer of some energy from the system.

Simple stating of objective.

Explaining the scientific principles involved.

Providing examples of thermal energy conversion in everyday life.

Discussing the history of research in thermal energy conversion.

Macroeconomics Essentials Assessment

Questions: 28 | Attempts: 13 | Last updated: Aug 4, 2025

Sample Question
What is the relationship between needs, wants, and scarcity in economics?

Limited. Society has just enough resources to meet its needs but not its wants.

Abundant. Society has unlimited resources to produce and satisfy all its needs and wants.

Scarce. The desire of society (individual consumers, government, business) to obtain and use goods and services is unlimited and the objective of all economic activity is to satisfy these material wants. The problem lies in the fact that economic resources (land, capital, labor, enterprise) are limited or scarce and therefore society will not be able to produce and consume all the goods and services it wants. Economics, then, is the science of efficiency; concerned with allocating these scarce resources so as to achieve maximum fulfillment of our material wants.

Unlimited. Society can produce and consume all the goods and services it desires without any constraints.

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