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Chemistry questions and answers

Browse questions about Chemistry, with answers and explanations.

423 questions

Acids, Bases and Salts54 questionsChemical Bonding10 questionsChemical Kinetics4 questionsChemical Reactions2 questionsChemical Reactions and Equations16 questionsChemistry in Everyday Life24 questionsCombustion and Flame12 questionsCoordination Compounds2 questionsElectrochemistry5 questionsEnvironmental Chemistry7 questionsMetallurgy13 questionsMetals and Non-metals3 questionsMetals, Non-metals and Alloys22 questionsOrganic Chemistry94 questionsPeriodic Table58 questionsPolymers3 questionsSolutions15 questionsSome Basic Concepts of Chemistry7 questionsStates of Matter22 questionsStructure of Atom48 questionsSurface Chemistry2 questions

Questions

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Isopentane, a branched-chain saturated hydrocarbon with formula C₅H₁₂, is also called ______.

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Assertion (A): Hydrocarbon dienes contain exactly two carbon–carbon double bonds. Reason (R): The presence of two double bonds alone makes a compound aromatic. Choose…

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Assertion (A): Rayon is classified as a semi-synthetic fibre. Reason (R): Rayon is manufactured by chemically processing cellulose obtained from natural sources such as…

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______ is a process of forming a thick oxide layer of aluminium.

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Consider the following statements regarding carbon-based substances: 1. Coke is a tough, porous, black substance that is almost a pure form of carbon. 2.…

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What is the high-temperature extraction of a metal from its ore by chemical reduction, often involving a molten phase, called?

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Whose law states that the masses of different substances deposited or liberated by the same quantity of electric charge are proportional to their chemical…

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Consider the following statements. 1. Diaspore is an aluminium-bearing mineral that occurs in bauxite. 2. Cinnabar is the chief ore of iron found in…

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Which method does NCERT describe as the most widely used for refining impure metals?

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Coke is considered to be an almost pure form of which of the following elements?

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Consider the following statements regarding phyllosilicates: 1. Micas, chlorite, talc, and serpentine are common examples of phyllosilicate minerals. 2. Phyllosilicates are characterized by a…

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Apart from whitening fabrics, for what other purpose is bleaching powder widely used?

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Assertion (A): Clove oil can be used as an olfactory indicator in acid-base reactions. Reason (R): Olfactory indicators show a change in colour when…

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What are the products when a reactive metal such as zinc reacts with dilute hydrochloric acid?

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Consider the following statements: 1. Bronsted and Lowry introduced their theory of acids and bases in the year 1923. 2. According to their theory,…

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Which acid is characteristic of vinegar and is used as a souring agent in pickled vegetables and sauces?

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In the NCERT example, why does a milkman add a very small amount of baking soda to fresh milk?

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Which descending order follows the textbook trend in basic character of the listed alkali-metal hydroxides?

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In the ammonia–brine process represented by NaCl + NH₃ + CO₂ + H₂O → NaHCO₃ + NH₄Cl, which listed substance is NOT a raw…

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Consider the following statements: 1. The pH of curd is lower than that of milk. 2. Curd is more acidic than milk. 3. A…

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Consider the following statements: 1. The presence of a high concentration of hydrogen ions indicates acidic soil. 2. Nitrogen is the key indicator of…

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