Chemistry Class 9th MCQs MCQs - General Science Practice | PakExamPoint

Practise Chemistry Class 9th MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.

Chemistry Class 9th MCQs MCQs and revision practice

Study Chemistry Class 9th MCQs through multiple-choice questions in General Science. This subtopic contains 95 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.

Use these Chemistry Class 9th MCQs MCQs to identify the facts, rules or methods you need to revise. Where an explanation is available, work through it and write down why your chosen option was correct or incorrect. Revisit difficult questions after reviewing your notes, then use exam mode for timed practice.

Continue your revision with related topics: Biology Class 10th MCQs MCQs, Biology Class 9th MCQs MCQs, Chemistry Class 10th MCQs MCQs, General Science Class 10 MCQs MCQs, General Science Class 4 MCQs MCQs, General Science Class 5 MCQs MCQs, General Science Class 6 MCQs MCQs, General Science Class 7 MCQs MCQs.

Return to all General Science topics to choose your next area of study. Read the MCQ study guide to plan your revision, or try a General Science practice quiz.

Chemistry Class 9th MCQs: questions and answer review

Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.

1. Which of the following gas diffuses fastest?

مندرجہ ذیل میں سے کون سی گیس سب سے تیزی سے پھیلتی ہے؟

Check answer and explanation

Answer: Hydrogen

Explanation Hydrogen is typically the gas that diffuses the fastest because it has the lowest molar mass. Molecular weight of 2.016 g/mol. According to Graham's Law of Diffusion, the rate of diffusion of a gas is inversely proportional to the square root of its molecular weight. Therefore, hydrogen diffuses the fastest.

2. An alloy is the homogeneous mixture of ______?

ایک مرکب ______ کا یکساں مرکب ہے؟

Check answer and explanation

Answer: Two solids

Explanation An alloy is a homogeneous mixture of two or more metals, or a metal and a non-metal, in a solid state. The components of an alloy are typically mixed when they are molten, and then solidified to form a uniform solid solution.

3. A piece of matter in pure form is termed as ______?

خالص شکل میں مادے کے ٹکڑے کو ______ کہا جاتا ہے؟

Check answer and explanation

Answer: Substance

Explanation A substance is a piece of matter in pure form , with a specific composition and properties. It can be either an element or a compound.

4. Which one of the following is most penetrating?

مندرجہ ذیل میں سے کون سا سب سے زیادہ گھسنے والا ہے؟

Check answer and explanation

Answer: Neutron

Explanation Neutrons are the most penetrating, because they have no charge and a relatively large mass compared to electrons and protons. This allows them to travel long distances through matter without being deflected or absorbed, making them highly penetrating.

5. Which one metal belongs to Alkaline earth metal?

کون سی دھات الکلائن ارتھ میٹل سے تعلق رکھتی ہے؟

Check answer and explanation

Answer: Ba

Explanation Barium is an alkaline earth metal , which is a group of elements in the periodic table that includes: Magnesium (Mg) Calcium (Ca) Strontium (Sr) Barium (Ba) Radium (Ra) These elements are in group 2 (formerly group IIA) of the periodic table.

6. 2 moles of sodium chloride (NaCl) is equal to?

Check answer and explanation

Answer: 117 grams

Explanation The molar mass of sodium chloride (NaCl) is 58.44 g/mol. To find the mass of 2 moles of NaCl , you can multiply the molar mass by 2: 2 mol × 58.44 g/mol = 116.88 g Rounded to the nearest gram , this is approximately 117 grams .

7. Which of the following have sharp melting point in solids?

مندرجہ ذیل میں سے کون سا ٹھوس میں تیز پگھلنے کا نقطہ ہے؟

Check answer and explanation

Answer: Diamond

Explanation Diamond is a crystalline solid that has a sharp melting point. Meaning it melts at a specific temperature (around 4000 K) with a minimal range.

8. Which compound is known as lunar caustic?

کونسا مرکب قمری کاسٹک کے نام سے جانا جاتا ہے؟

Check answer and explanation

Answer: AgNO3

Explanation Silver nitrate (AgNO3) is a strong oxidizing agent and a caustic substance. It is also known as "lunar caustic" due to its historical use to treat lunar burns (sunburn).

9. The periodic table divided into S, P, d, and f block based on _______?

متواتر جدول کو _______ کی بنیاد پر ایس، پی، ڈی، اور ایف بلاک میں تقسیم کیا گیا ہے؟

Check answer and explanation

Answer: Electronic Configuration

Explanation The periodic table divided into S, P, d, and f block based on Electronic Configuration. S block : The s block includes the first two columns of the periodic table, which are the alkali and alkaline earth metals. P block : The p block includes the elements in the six columns on the right side of the periodic table. D block : The d block includes the elements in the ten columns in the middle of the periodic table. These are also known as the transition metals . F block : The f block includes the elements at the bottom of the periodic table, which are known as the inner transition metals or lanthanides and actinides.

10. What is the particle size in suspension?

معطلی میں ذرہ کا سائز کیا ہے؟

Check answer and explanation

Answer: Greater than 10 nm^3

Explanation In a suspension, the particle size is typically larger than 10 nm (nanometers) in diameter. Suspensions are heterogeneous mixtures where the particles of the solute (solid, liquid, or gas) are dispersed in a solvent (liquid, gas, or solid) and are visible to the naked eye or under a microscope.

Found a mistake? Use “Report correction” in the practice tool or contact us with the question and a supporting source.