Zero Conditional Grammar Quiz
12 multiple-choice questions on the zero conditional: structure, scientific facts, general truths, instructions, and zero vs first conditional. A2–B1 level.
This quiz checks how confidently you can apply Zero Conditional at A2–B1 level, with questions built around real forms such as present simple, a scientific fact, general truth, will and first rather than abstract rule statements. Each question presents a full example sentence, so you have to judge which form fits the meaning and structure correctly instead of recalling a rule in isolation.
If a question catches you out, the FAQ section below explains the underlying rule in more detail, including common mistakes learners make with this point. Reviewing the explanation immediately after an incorrect answer, then retrying the quiz on a different day, builds more durable grammar knowledge than repeating the same 12 questions back to back.
Zero Conditional — FAQ
What is the structure of the zero conditional?
The zero conditional is formed with 'if' plus the present simple in the if-clause, followed by the present simple in the result clause. For example, 'If you heat water to 100 degrees Celsius, it boils' uses the present simple in both parts of the sentence.
When is the zero conditional used for scientific facts?
The zero conditional is used to describe scientific facts and results that are always true under the stated conditions, such as 'If you mix blue and yellow, you get green'. Because the result always happens, this differs from conditionals describing merely possible or hypothetical outcomes.
How is the zero conditional used for general truths?
The zero conditional expresses general truths about the world that are always or usually valid, such as 'If people don't eat, they get hungry'. These statements describe a reliable cause-and-effect relationship rather than a one-off future possibility.
How is the zero conditional used for habits and routines?
The zero conditional can describe personal habits and routines, such as 'If I have time, I read before bed'. Here, it shows what regularly or typically happens under a certain condition, similar to describing a repeated pattern of behaviour.
How is the zero conditional used for instructions and rules?
The zero conditional is commonly used to give instructions or state rules, often replacing the if-clause verb with an imperative in the result clause, as in 'If the alarm rings, leave the building' or 'If you see a red light, stop'. This structure is common in manuals, safety notices and classroom rules.
What is the difference between the zero conditional and the first conditional?
The zero conditional describes something that is always true, using the present simple in both clauses, as in 'If it rains, the grass gets wet'. The first conditional describes a specific, likely future possibility, using the present simple in the if-clause but 'will' in the result clause, as in 'If it rains tomorrow, we will stay home'.
Can the zero conditional use 'will'?
No, the zero conditional never uses 'will' in the result clause; using 'will' turns the sentence into a first conditional describing a specific future possibility rather than a general truth. A common mistake is saying 'If you heat ice, it will melt' instead of the correct zero conditional 'If you heat ice, it melts'.
What is a common mistake with the verb form in the if-clause?
A common mistake is dropping the third-person -s in the present simple if-clause, producing an incorrect sentence like 'If water reach 100 degrees, it boils' instead of the correct 'If water reaches 100 degrees, it boils'. Both clauses must correctly follow present simple agreement rules.
Is a comma needed in zero conditional sentences?
A comma is used to separate the if-clause from the result clause only when the if-clause comes first in the sentence, as in 'If you press this button, the machine stops'. No comma is needed when the order is reversed, as in 'The machine stops if you press this button'.
Can the two clauses in a zero conditional mix different tenses?
No, both clauses in a true zero conditional must stay in the present simple; mixing tenses, such as 'If you heated ice, it melts', is incorrect. Consistent present simple in both clauses is what signals that the sentence expresses an always-true fact rather than a hypothetical situation.