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.
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.
Try each question before opening its answer. Record the concept behind each mistake and revisit it during your next practice session.
Answer: 7
Explanation The prefix "hept" stands for 7 carbon atoms. This is a Greek prefix used in chemistry to denote the number of carbon atoms in a molecule. Here are some examples: Hex- means 6 Hept- means 7 Oct- means 8 Non- means 9 Dec- means 10
آلے کے غلط کام کرنے سے پیدا ہونے والی خرابی ______ ہے؟
Answer: Systematic Error
Explanation Systematic errors are caused by faulty or improper functioning of instruments, or by a flaw in the experimental design. These errors are consistent and repeatable, and can be identified and corrected.
مندرجہ ذیل میں سے کون سا بیان متحرک توازن کے بارے میں غلط ہے؟
Answer: Equilibrium cannot be disturbed by any external stress
Explanation Dynamic equilibrium is a state where the rates of forward and reverse reactions are equal, and the concentrations of reactants and products remain constant. However, this equilibrium can be disturbed by external stresses such as: Changes in concentration Changes in temperature Changes in pressure Adding or removing reactants or products
مندرجہ ذیل میں سے کون سی گلوبل وارمنگ کی وجہ ہے؟
Answer: Rise in CO2 concentration
Explanation Global warming is primarily caused by the increasing levels of carbon dioxide (CO2) in the Earth's atmosphere , which traps heat and leads to a warming effect. The main reason for this increase is human activities such as : Burning fossil fuels like coal, oil, and gas Deforestation and land-use changes
کیو سی کو _____ کے طور پر بیان کیا جا سکتا ہے؟
Answer: Ratio of molar concentration of product and reactant raised to the power of coefficient
Explanation Qc (reaction quotient) is defined as the ratio of the molar concentrations of products to reactants , each raised to the power of their respective stoichiometric coefficients (coefficients in the balanced chemical equation).
کون سی گرین ہاؤس گیسوں کا حصہ نہیں ہے؟
Answer: Oxygen
Explanation Oxygen (O2) is not a greenhouse gas. Greenhouse gases are gases in the Earth's atmosphere that absorb and emit radiation, trapping heat and contributing to the Greenhouse Effect. The main greenhouse gases are: Carbon dioxide (CO2) Methane (CH4) Nitrous oxide (N2O) Water vapor (H2O) Ozone (O3) Chlorofluorocarbons (CFCs) Hydrofluorocarbons (HFCs) Perfluorocarbons (PFCs)
صابن ______ کے نمکیات کی اصطلاح ہے؟
Answer: Fatty acid
Explanation Soap is a type of salt that is formed from the reaction of a fatty acid with an alkali, such as sodium or potassium hydroxide. Fatty acids are long-chain carboxylic acids that are found in fats and oils.
اوزون کی تہہ ______ کا حصہ ہے؟
Answer: Stratosphere
Explanation The ozone layer is a region within the stratosphere , extending from about 15 to 30 km (9 to 19 miles) above the Earth's surface. It contains a high concentration of ozone (O3) , a molecule made up of three oxygen atoms. The ozone layer plays a crucial role in protecting the Earth from harmful ultraviolet (UV) radiation from the sun, particularly UV-C and UV-B rays.
الکنیز ______؟
Answer: Have carbon-carbon double bond
Explanation Alkenes are a class of unsaturated hydrocarbons that contain one or more carbon-carbon double bonds (C=C). This double bond is the defining feature of alkenes. It makes them more reactive than saturated hydrocarbons (alkanes).
کپاس میں ______ سیلولوز ہوتا ہے۔
Answer: 95%
Explanation Cotton is a natural fiber that contains a very high percentage of cellulose, typically around 95%. Cellulose is a polysaccharide (a long chain of glucose molecules) that provides strength, structure, and durability to plant cell walls. Cotton is one of the purest forms of cellulose , making it a valuable resource for textile production.
Found a mistake? Use “Report correction” in the practice tool or contact us with the question and a supporting source.