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.

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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.

81. In dry cell ____ is used as cathode.

ڈینیل سیل میں ____ کیتھوڈ کے طور پر استعمال ہوتا ہے۔

Check answer and explanation

Answer: Cu

Explanation In a dry cell , Carbon rod (often with Cu connection) acts as the cathode . While Zinc container serves as the anode . The cathode collects electrons during the electrochemical reaction, completing the circuit.

82. One atmospheric pressure is equal to _____?

ایک ماحولیاتی دباؤ _____ کے برابر ہے؟

Check answer and explanation

Answer: 101325 Pascal

Explanation One atmospheric pressure , also known as standard atmospheric pressure. It is defined as 101325 Pascals (Pa). This is the pressure exerted by the weight of the atmosphere at sea level. It is used as a standard unit of pressure.

83. Chlorine can be displaced by _____?

کلورین کو _____ کی طرف سے بے گھر کیا جا سکتا ہے؟

Check answer and explanation

Answer: F

Explanation Chlorine can be displaced by fluorine (F). This is because fluorine is more reactive than chlorine. As halogen reactivity decreases down the group in the periodic table.

84. Which of the following diagram shows atoms are bonded with same electronegativity?

مندرجہ ذیل میں سے کون سا خاکہ دکھاتا ہے کہ ایٹم ایک ہی برقی منفیت کے ساتھ جڑے ہوئے ہیں؟

Check answer and explanation

Answer: A -----:----- B

Explanation The diagram that shows atoms are bonded with the same electronegativity is: A -----:----- B. In this representation, the bond is shown with a symmetrical distribution of electrons. It suggesting that the atoms have the same or very similar electronegativity.

85. Two fluorine atoms share one electron each in their outermost shell to achieve electronic configuration of ______?

دو فلورین ایٹم ______ کی الیکٹرانک ترتیب کو حاصل کرنے کے لیے اپنے سب سے بیرونی خول میں ایک ایک الیکٹران کا اشتراک کرتے ہیں؟

Check answer and explanation

Answer: Ne

Explanation Fluorine (F) has an atomic number of 9 and an electronic configuration of 1s² 2s² 2p⁵. To achieve a stable electronic configuration , two fluorine atoms share one electron each to form a covalent bond. Resulting in a configuration similar to that of neon (Ne), which is 1s² 2s² 2p⁶.

86. The density of gases increases when its ______?

گیسوں کی کثافت اس وقت بڑھتی ہے جب اس کا ______ ہے؟

Check answer and explanation

Answer: Pressure increased

Explanation When the pressure on a gas increases , the molecules are forced closer together, resulting in a higher density. This is because the volume of the gas decreases as the pressure increases, causing the molecules to be more concentrated.

87. The Empirical formula of hydrogen peroxide is _______?

ہائیڈروجن پیرو آکسائیڈ کا تجرباتی فارمولا _______ ہے؟

Check answer and explanation

Answer: HO

Explanation The empirical formula of hydrogen peroxide (H2O2) is HO . The empirical formula is the simplest whole-number ratio of atoms of each element in a compound. In this case, the ratio of hydrogen to oxygen is 1:1, which is represented by the formula HO.

88. Which gas can turn lime water milky?

کون سی گیس چونے کے پانی کو دودھیا بنا سکتی ہے؟

Check answer and explanation

Answer: CO2

Explanation Carbon dioxide (CO2) reacts with calcium hydroxide (Ca(OH)2. It is also known as lime water to form a white precipitate of calcium carbonate (CaCO3), which turns the solution milky : Ca(OH)2 + CO2 → CaCO3 + H2O This reaction is often used as a test for carbon dioxide.

89. The molar mass of H2SO4 is ______?

Check answer and explanation

Answer: 98 gm

Explanation The molar mass of H2SO4 , also known as sulfuric acid, is 98 grams per mole (g/mol).

90. Which one of the following is strong acid?

مندرجہ ذیل میں سے کون سا مضبوط تیزاب ہے؟

Check answer and explanation

Answer: HI

Explanation Hydroiodic acid (HI) is the strongest acid. The acidity of hydrohalic acids increases down the group in the periodic table. Due to the decreasing bond strength and increasing bond length.

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