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Chemical Reactions and Equations

Each subtopic includes About section, revision page link, 10 preview questions, and practice CTAs.

Chemical equations

Subtopic

Chemical equations under Chemical Reactions and Equations for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which of the following best describes the physical state of NaClNaCl in the equation NaOH(aq)+HCl(aq)→NaCl(aq)+H2O(l)NaOH(aq) + HCl(aq) \rightarrow NaCl(aq) + H_{2}O(l)?

    A.

    Solid

    B.

    Liquid

    C.

    Dissolved in water

    D.

    Gas

  2. 2.

    Which of the following is the correct representation of magnesium burning in oxygen?

    A.

    Mg+O→MgOMg + O \rightarrow MgO

    B.

    Mg+O2→MgOMg + O_{2} \rightarrow MgO

    C.

    2Mg+O2→2MgO2Mg + O_{2} \rightarrow 2MgO

    D.

    Mg2+O2→2MgOMg_{2} + O_{2} \rightarrow 2MgO

  3. 3.

    In the reaction A+B→C+DA + B \rightarrow C + D, which side contains the reactants?

    A.

    Left side

    B.

    Right side

    C.

    Both sides

    D.

    Neither side

Download the worksheet for Chemical Reactions and Equations - Chemical equations to practice offline. It includes additional chapter-level practice questions.

Balanced chemical equations

Subtopic

Balanced chemical equations under Chemical Reactions and Equations for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    To balance the equation Fe+Cl2→FeCl3Fe + Cl_{2} \rightarrow FeCl_{3}, the coefficients for FeFe, Cl2Cl_{2}, and FeCl3FeCl_{3} are respectively:

    A.

    1, 1, 1

    B.

    2, 3, 2

    C.

    1, 3, 2

    D.

    2, 2, 2

  2. 2.

    How many total atoms are in a molecule of CH4CH_{4}?

    A.

    1

    B.

    4

    C.

    5

    D.

    2

  3. 3.

    In the equation 2H2+O2→2H2O2H_{2} + O_{2} \rightarrow 2H_{2}O, what is the coefficient of O2O_{2}?

    A.

    1

    B.

    2

    C.

    3

    D.

    4

Download the worksheet for Chemical Reactions and Equations - Balanced chemical equations to practice offline. It includes additional chapter-level practice questions.

Types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction

Subtopic

Types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction under Chemical Reactions and Equations for Grade 10 CBSE.

About Topic & Revision

Preview questions (no answers)

  1. 1.

    Which gas is passed through lime water to turn it milky?

    A.

    Oxygen

    B.

    Hydrogen

    C.

    Carbon dioxide

    D.

    Nitrogen dioxide

  2. 2.

    In the reaction PbO+C→Pb+COPbO + C \rightarrow Pb + CO, which substance is the reducing agent?

    A.

    PbOPbO

    B.

    CC

    C.

    PbPb

    D.

    COCO

  3. 3.

    The reaction between potassium chloride and silver nitrate is an example of:

    A.

    Decomposition

    B.

    Combination

    C.

    Double displacement

    D.

    Redox

Download the worksheet for Chemical Reactions and Equations - Types of chemical reactions: combination, decomposition, displacement, double displacement, precipitation, neutralization, oxidation and reduction to practice offline. It includes additional chapter-level practice questions.

Chemical Reactions and Equations - Class 10 Science (CBSE) | Krit.club