Tamil Nadu SSLC (Class 10) Types of Chemical Reactions — practice questions
20 free MCQs with worked solutions. Tap any question for the answer + explanation, or practice them all in the app.
Practice Tamil Nadu SSLC (Class 10) Types of Chemical Reactions in the app →The reaction H2 + Cl2 giving 2HCl, where two reactants join to form a single compound, is classified as which Most combination reactions release a large amount of heat. They are therefore described as:Heating calcium carbonate breaks it down into calcium oxide and carbon dioxide. This is an example of which tySilver bromide turning from yellow to grey on exposure to light is an example of which kind of decomposition rWhen an iron nail is dipped in copper sulphate solution, iron displaces copper and copper deposits on the nailOut of fluorine displacing chlorine from sodium chloride, and chlorine displacing fluorine from sodium fluoridMixing potassium iodide and lead (II) nitrate solutions gives a yellow precipitate of lead (II) iodide. This iThe reaction NaOH + HCl giving NaCl and water is a typical example of which type of reaction?Combustion is described as an exothermic oxidation. Which pair of features best supports this description?Which statement correctly distinguishes a reversible reaction from an irreversible reaction?At the equilibrium state of a reversible reaction in a closed vessel, which condition is satisfied?Powdered calcium carbonate reacts faster with hydrochloric acid than marble chips of the same mass. Which factA catalyst changes a reaction in which specific way?At 25 degrees Celsius the ionic product of water Kw equals the product of which two concentrations?On the pH scale, a solution with a pH greater than 7 is correctly described as:What is the pH of a 0.01 M solution of nitric acid (HNO3), a strong monobasic acid?What is the pH of a sulphuric acid solution that is 5 x 10^-5 mol per litre in concentration? (H2SO4 gives twoWhat is the pH of a 1 x 10^-4 molar solution of sodium hydroxide, a strong base, at 25 degrees Celsius?If a solution has a pOH of 11.76 at 25 degrees Celsius, what is its pH?When the pH of mouth saliva falls below 5.5, the enamel of teeth gets weathered. Why are toothpastes used to c