EASY
10th Gujarat Board
IMPORTANT
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Which one among the following is a decomposition reaction?

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Important Questions on Chemical Reactions and Equations

HARD
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 19
Write the balanced chemical equations for the following reaction:
Barium chloride + Potassium sulphate → Barium sulphate + Potassium chloride
MEDIUM
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 20
Balance the following chemical equation:
NaOH+H2SO4→Na2SO4+H2O
HARD
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 21
Write the balanced chemical equation for the following and identify the type of reaction:
Zinc carbonate(s)→ Zinc oxide (s)+ Carbon dioxide (g)
EASY
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 22
To prevent chips from getting oxidised, the bags of chips are flushed with
MEDIUM
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 23
Why do we apply paint on iron articles?
HARD
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 24
A student placed Zn rod in FeSO4 solution. After 10 hours when rod was taken out and it was observed that:
HARD
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 25
Which of the following involves reduction of chlorine?
MEDIUM
10th Gujarat Board
IMPORTANT
Science Crash Course (Based on Revised Syllabus - 2023)>Chapter 1 - Chemical Reactions and Equations>Exercise>Q 47
Translate the following statement into chemical equation and then balance it:
Potassium metal reacts with water to give potassium hydroxide and hydrogen gas.