Start learning →

Andhra Pradesh SSC (Class 10) Chemical Reactions and Equations — practice questions

Explore 43 free Chemical Reactions and Equations questions in Andhra Pradesh SSC (Class 10) Science and Technology. Open each question or exercise to read its content, reference answers and available explanation.

Practise Chemical Reactions and Equations with Quill →

Chemical Reactions and Equations questions and exercises with answers

Showing questions 1–30 of 43.

Heating copper nitrate crystals produces black copper oxide, reddish-brown nitrogen dioxide, and oxygen. This reaction is best classified asRead the answer and worked solution →In a chemical equation, the substances written on the left-hand side are the:Read the answer and worked solution →The substances formed in a chemical reaction are called the:Read the answer and worked solution →A balanced chemical equation has an equal number of atoms of each element on both sides because of the law of:Read the answer and worked solution →The reaction A + B → AB, where two substances combine to form one, is a:Read the answer and worked solution →A reaction of the type AB → A + B, where a single compound breaks into simpler substances, is a:Read the answer and worked solution →A reaction in which a more reactive element displaces a less reactive one from its compound is a:Read the answer and worked solution →Gain of oxygen (or loss of electrons) by a substance is called:Read the answer and worked solution →Loss of oxygen (or gain of electrons) by a substance is called:Read the answer and worked solution →A reaction in which oxidation and reduction occur simultaneously is called a:Read the answer and worked solution →The slow conversion of iron into rust in the presence of moisture and air is an example of:Read the answer and worked solution →The oxidation of fats and oils in food, producing a bad smell and taste, is called:Read the answer and worked solution →Decomposition brought about by passing electricity through a substance is called:Read the answer and worked solution →The decomposition of a substance on heating is called ___ decomposition:Read the answer and worked solution →Which observation does NOT necessarily indicate a chemical reaction?Read the answer and worked solution →Balance: H₂ + O₂ → H₂O.Read the answer and worked solution →Which principle requires us to balance chemical equations?Read the answer and worked solution →Balance: Fe + H₂O → Fe₃O₄ + H₂.Read the answer and worked solution →In Zn + 2 HCl → ZnCl₂ + H₂, the state symbol for HCl in solution is:Read the answer and worked solution →CaCO₃ → CaO + CO₂ is an example of which type of reaction?Read the answer and worked solution →In Fe + CuSO₄ → FeSO₄ + Cu, what kind of reaction is this?Read the answer and worked solution →2 H₂ + O₂ → 2 H₂O is a:Read the answer and worked solution →In the reaction Na₂SO₄ + BaCl₂ → BaSO₄ + 2 NaCl, what is observed?Read the answer and worked solution →Which of these is an endothermic reaction?Read the answer and worked solution →Which reaction does NOT need heat to proceed?Read the answer and worked solution →In the reaction CuO + H₂ → Cu + H₂O, the substance that is reduced is:Read the answer and worked solution →A reaction in which one substance is oxidised and another reduced is called a:Read the answer and worked solution →Rusting of iron requires which two conditions?Read the answer and worked solution →Chips packets are flushed with nitrogen mainly to:Read the answer and worked solution →In ZnO + C → Zn + CO, the reducing agent is:Read the answer and worked solution →

Worked practice questions

Heating copper nitrate crystals produces black copper oxide, reddish-brown nitrogen dioxide, and oxygen. This reaction is best classified as

  1. combination
  2. displacement
  3. thermal decomposition
  4. neutralization
Show answer and solution

Correct answer: C. thermal decomposition

A single compound, copper nitrate, breaks down into simpler substances on heating. Since heat causes the breakdown, it is a thermal decomposition reaction.

Open this question →

In a chemical equation, the substances written on the left-hand side are the:

  1. reactants
  2. products
  3. solvents
  4. catalysts
Show answer and solution

Correct answer: A. reactants

Reactants are written on the left-hand side of a chemical equation.

Open this question →

The substances formed in a chemical reaction are called the:

  1. indicators
  2. products
  3. residues
  4. reactants
Show answer and solution

Correct answer: B. products

Products are the new substances formed, written on the right-hand side.

Open this question →

How to practise

  1. Choose a Chemical Reactions and Equations question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

Put it into practice

Continue with Chemical Reactions and Equations practice for Andhra Pradesh SSC (Class 10). Read explanations as you go. No signup form needed to start.

Practise Chemical Reactions and Equations →

More Science and Technology topics

Life Processes in Living Organisms Part 1Metals and Non-metalsPeriodic Classification of ElementsCarbon CompoundsEffects of Electric CurrentRefraction of Light and LensesAcids, Bases and SaltsLife Processes in Living Organisms Part 2