Practise Chemistry Class 10th MCQs MCQs in General Science. Attempt multiple-choice questions, check answers and revise related subtopics.
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.
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پوٹاشیم ہائیڈرو آکسائیڈ کے استعمال سے ________ پیدا ہوا؟
Answer: Soft soap
Explanation Potassium hydroxide (KOH) is used to make soft soaps, which are typically more soluble and have a lower melting point than soaps made with sodium hydroxide (NaOH). Soft soaps are often used in liquid soaps, shampoos, and body washes.
پانی کی مستقل سختی ______ کی موجودگی کی وجہ سے ہے؟
Answer: MgSO4
Explanation The permanent hardness of water is due to the presence of MgSO₄ (magnesium sulfate). Permanent hardness is caused by dissolved minerals like calcium sulfate (CaSO₄) and magnesium sulfate, which cannot be removed by boiling the water.
چربی ______ پر ٹھوس ہیں؟
Answer: Ordinary room temperature
Explanation Fats are typically solids at ordinary room temperature ( around 20-25°C or 68-77°F ). However, they can melt and become liquids when heated to a higher temperature.
اگر پی ایچ قدر 7 سے زیادہ ہے، تو حل ______ ہے؟
Answer: Basic
Explanation If the pH value is greater than 7 , the solution is basic (also known as alkaline). This means that the concentration of hydroxide ions (OH-) is higher than the concentration of hydrogen ions (H+). Key Points: pH < 7: Acidic pH = 7: Neutral pH > 7: Basic (or alkaline)
امینو ایسڈ ______ کے تعمیراتی بلاکس ہیں؟
Answer: Protein
Explanation Amino acids are the building blocks of proteins , which are long chains of amino acids linked together by peptide bonds. There are 20 different amino acids that the human body uses to build proteins. They are essential for various cellular processes , including structure, function, and regulation.
ماحول کی وہ تہہ جو اسٹراٹاسفیر اور ٹروپوسفیئر کو الگ کرتی ہے اسے _____ کہا جاتا ہے؟
Answer: Stratopause
Explanation The tropopause is the layer that separates the stratosphere and troposphere. It's a boundary layer located at an average altitude of around 12 km (7.5 miles) above the Earth's surface , where the troposphere ends and the stratosphere begins.
تجزیہ مرکبات میں فنکشنل گروپس کی موجودگی کی شناخت _____ سے متعلق ہے؟
Answer: Organic qualitative analysis
Explanation Organic qualitative analysis deals with the identification of functional groups in organic compounds. Functional groups are specific groups of atoms within a molecule that determine its chemical properties and reactivity.
جلد پر گلانے والا اثر ______ کی وجہ سے ہے؟
Answer: Acid
Explanation Acids are known to cause corrosive effects on skin, including burns, ulcers, and damage to skin tissue. Examples of corrosive acids include sulfuric acid (H2SO4), hydrochloric acid (HCl), and nitric acid (HNO3).
مندرجہ ذیل میں نمک ______ ہے؟
Answer: KCl
Explanation KCl (potassium chloride) is a salt. Specifically a neutral salt formed by the reaction of an acid (HCl) with a base (KOH).
نیلے سبز رنگ کے ساتھ کاپر ہالائیڈ کا شعلہ ٹیسٹ ______ کی موجودگی کی نشاندہی کرتا ہے؟
Answer: Copper
Explanation The flame test is a qualitative analysis technique used to identify certain elements based on the color they produce when heated in a flame. In the case of copper halides (such as copper chloride or copper bromide), the flame test produces a bluish-green color , which indicates the presence of copper.
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