Chemistry Class 10th MCQs MCQs - General Science Practice | PakExamPoint

Practise Chemistry Class 10th MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.

Chemistry Class 10th MCQs MCQs and revision practice

Study Chemistry Class 10th MCQs through multiple-choice questions in General Science. This subtopic contains 76 practice questions. Read the wording carefully, compare the options and attempt an answer before checking the solution in learning mode.

Use these Chemistry Class 10th 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 9th 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 10th 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.

51. The Gas is mobile phase in ______?

میں گیس موبائل فیز ہے؟ ______

Check answer and explanation

Answer: Gas chromatography

Explanation In gas chromatography (GC) , the mobile phase is a gas, such as helium, nitrogen, or argon, that carries the sample through the column. The sample is vaporized and separated based on its affinity for the stationary phase, which is typically a solid or liquid coating on the column.

52. The citric acid is used in preparation of cold drinks for _____?

سائٹرک ایسڈ کو کولڈ ڈرنکس کی تیاری میں استعمال کیا جاتا ہے؟

Check answer and explanation

Answer: Sour taste

Explanation Citric acid is a natural preservative and flavoring agent that is commonly used in foods and beverages to add a sour taste. It is particularly useful in cold drinks, such as: Soft drinks (e.g., lemon-lime soda) Fruit juices (e.g., orange, grapefruit) Sports drinks Energy drinks

53. Which of the following is helpful for removal of permanent hardness?

مندرجہ ذیل میں سے کون سا مستقل سختی کو دور کرنے میں مددگار ہے؟

Check answer and explanation

Answer: Na2CO3

Explanation Sodium carbonate is also known as washing soda. It is commonly used to remove permanent hardness from water. It reacts with calcium and magnesium ions , which are the causes of permanent hardness, to form precipitates that can be removed from the water.

54. Which of the following is a Lewis base?

مندرجہ ذیل میں سے کون سا لیوس بیس ہے؟

Check answer and explanation

Answer: CN

Explanation CN (cyanide ion) is a Lewis base. Because it donates an electron pair to form a coordinate covalent bond.

55. The general formula for alkanes is _____?

Check answer and explanation

Answer: CnH2n+2

Explanation The general formula for alkanes is CnH2n+2, where n is the number of carbon atoms in the molecule. This formula represents the saturated hydrocarbons, also known as paraffins. Key Points: CnH2n is the general formula for alkenes CnH2n+1 is the general formula for alcohols

56. The taste of water is ______?

پانی کا ذائقہ ______ ہے؟

Check answer and explanation

Answer: Tasteless

Explanation Water is neutral and does not have a taste. The taste buds on our tongues can detect five basic tastes: sweet, sour, salty, bitter, and umami (savory). Water does not contain any molecules that stimulate these taste buds, making it tasteless.

57. The value of Kc increases when ______?

کے سی کی قدر اس وقت بڑھتی ہے جب ______؟

Check answer and explanation

Answer: [Product] is more

Explanation The value of Kc (equilibrium constant) increases when the concentration of the product increases. This is because Kc is a measure of the ratio of products to reactants at equilibrium. A higher product concentration means a greater tendency for the reaction to proceed in the forward direction.

58. Acetic acid is obtained from _____?

ایسیٹک ایسڈ _____ سے حاصل کیا جاتا ہے؟

Check answer and explanation

Answer: Vinegar

Explanation Acetic acid is the main component of vinegar. It is a liquid made by fermenting the natural sugars found in fruits, grains, and other food sources. Vinegar is typically made from apples, grapes, or other fruits, and it contains approximately 4-6% acetic acid by volume.

59. Which one of the following is not a fraction of crude oil?

مندرجہ ذیل میں سے کون سا خام تیل کا ایک حصہ نہیں ہے؟

Check answer and explanation

Answer: Ammonia

Explanation Ammonia (NH3) is not a fraction of crude oil. Crude oil is a mixture of various hydrocarbons, which are separated into different fractions based on their boiling points and properties. The main fractions of crude oil are: Refinery gas Liquefied petroleum gas (LPG) Naphtha Gasoline Kerosene Diesel fuel Fuel oil Lubricating oils Paraffin wax Petroleum coke (also known as petcoke)

60. Which of the following water borne diseases is of viral origin?

مندرجہ ذیل میں سے کون سی پانی سے پیدا ہونے والی بیماری وائرل ہے؟

Check answer and explanation

Answer: Polio

Explanation Polio is also known as poliomyelitis. It is a disease caused by the poliovirus. The virus is usually spread through the fecal-oral route, which includes through contaminated water and food.

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