मराठी

Balance the Following Equation: Zn + Koh → K2zno2 + H2

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प्रश्न

Balance the following equation:

Zn + KOH → K2ZnO2 + H2

एक शब्द/वाक्यांश उत्तर
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उत्तर

Zn + 2KOH → K2ZnO2 + H2

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पाठ 1: The Language of Chemistry - Exercise 1 (B) [पृष्ठ १५]

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सेलिना Concise Chemistry [English] Class 9 ICSE
पाठ 1 The Language of Chemistry
Exercise 1 (B) | Q 5.03 | पृष्ठ १५

संबंधित प्रश्‍न

2 mL of sodium hydroxide solution is added to a few pieces of granulated zinc metal taken in a test tube. When the contents are warmed, a gas evolves which is bubbled through a soap solution before testing. Write the equation of the chemical reaction involved and the test to detect the gas. Name the gas which will be evolved when the same metal reacts with dilute solution of a strong acid.


Write a complete balanced equation for the following reaction:

\[\ce{Calcium (solid) + Water (liquid) -> Calcium hydroxide (solution) + Hydrogen (gas)}\]


Write the balanced chemical equation of the following reaction. iron + sulphuric acid → ferrous sulphate + hydrogen.


When a potassium iodide solution is added to a solution of lead (II) nitrate in a test tube, a precipitate is formed.

What is the colour of this precipitate? Name the compound precipitated.


Give one example in the case where supplying energy [given below] is necessary for a chemical reaction.

Light energy


Name the following:

Two gases which react under pressure in presence of a catalyst at elevated temperatures to give a gaseous product.


Give an example of a chemical equation in which two reactants form:

one product


Balance the following simple equation:

NaHCO3  +  H2SO4  →  Na2SO4  +  H2O  +  CO2 


Write the skeleton equation for the following word equation and then balance them.

  1. Carbon + Oxygen → Carbon dioxide.
  2. Phosphorus + Chlorine → Phosphorus pentachloride.
  3. Sulphur + Oxygen → Sulphur dioxide.
  4. Magnesium + hydrogen → Magnesium + Hydrogen chloride chloride.

What is a reactant in a chemical equation?


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