This 9th class chemistry chapter 7 online test covers Chapter 7 of the Class 9 Chemistry course, Acid Base Chemistry. It has 25 multiple-choice questions, shown one at a time, and it marks itself the moment you finish. There is no timer and no sign-up. When you press finish you get your score, and every question is shown again with your answer, the correct option and a short explanation of why that option is right. An Urdu medium version of the same test is further down this page.
What the 25 Questions Test
The questions are spread across the whole of Chapter 7 rather than one section, and most of them ask you to apply something rather than simply recall it. Expect to be doing the following:
- Identifying the acid and the base under the Bronsted-Lowry definition.
- Picking the conjugate partner of a given acid or base.
- Converting between pH values and relative acidity.
- Predicting the products of a neutralisation.
- Choosing the right indicator for a described titration.
- Deciding whether a named salt is acidic, basic or neutral.
Quick Recall Before You Start
These are the points Acid Base Chemistry questions turn on most often. Read them once, then begin:
- An acid donates a proton; a base accepts one.
- Each pH unit is a tenfold change in hydrogen ion concentration.
- Acid plus base gives salt plus water.
- A conjugate pair differs by exactly one proton.
Traps Hidden in the Wrong Options
In a well-built multiple-choice test the wrong answers are not random; each one is placed there because students genuinely believe it. In this chapter look out for:
- A conjugate pair differing by more than one proton.
- pH treated as a linear rather than a logarithmic scale.
- Neutralisation products given without water.
How the Test Works
- 25 questions, one at a time, with Next and Previous buttons.
- No timer, so you can work a calculation out on paper first.
- Automatic marking as soon as you finish.
- Answer review showing the correct option and an explanation for every question.
- Retake as often as you like; your score is not stored anywhere.
Start the Chapter 7 Online Test
In Chapter 7 keep track of the proton: whichever species gives it away is the acid, whatever receives it is the base. Read each question to the end before looking at the options, because one word such as “only”, “always” or “molten” can decide which answer is correct. Aim for 20 out of 25 or better before moving on.
Chapter 7 Online Test — Urdu Medium
Urdu medium students can attempt the same Chapter 7 test with every question, option and explanation written in Urdu. It behaves exactly like the English test above: 25 questions one at a time, no timer, and a full answer review at the end.
What to Do With Your Score
The score matters less than the review that follows it. Note the topic behind each wrong answer rather than the question number, and if several come from one part of the chapter, revise that part alone. For Chapter 7 the part worth securing first is the pH scale and neutralisation, which reappear in titration questions. Retake the test a day or two later rather than straight away, then move to the written paper, where you have to produce the answer instead of recognising it.
Frequently Asked Questions
What is a conjugate acid-base pair?
Two species that differ by exactly one proton. When an acid donates its proton, what is left is its conjugate base; when a base accepts one, the result is its conjugate acid.
How much more acidic is pH 3 than pH 5?
A hundred times. The scale is logarithmic, so each whole unit is a tenfold change in hydrogen ion concentration, and two units means ten multiplied by ten.
Is this test free?
Yes. There is no sign-up, no limit on retakes and nothing is locked. Your score is not saved or shared.
Related Class 9 Chemistry Resources
Once the MCQs feel comfortable, move to writing. The Chapter 7 test paper is a 36-mark bilingual practice paper with an MCQ answer key, and the Chapter 7 solved notes give you the solved exercise for the same chapter. Carry on with Chapter 6 online test (Equilibria) and Chapter 8 online test (Periodic Table and Periodicity). Browse every Class 9 Chemistry online test, all Class 9 Chemistry test papers and the Class 9 Chemistry notes, or open the Class 9 Chemistry page for everything in one place.
Other subjects: Physics, Biology and Maths chapter tests, Physics, Maths and Biology guess papers, or the Class 9 hub.