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Write the Formula of the Following Compound: Potassium Hydroxide

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प्रश्न

Write the formula of the following compound:

Potassium hydroxide

एक पंक्ति में उत्तर
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उत्तर

Potassium hydroxide - KOH  - `"OH"^(1-)` 

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अध्याय 1: The Language of Chemistry - For Additional High Order Thinking Questions [पृष्ठ १५]

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विराफ जे दलाल Simplified ICSE Chemistry [English] Class 9
अध्याय 1 The Language of Chemistry
For Additional High Order Thinking Questions | Q 2. 6. i] (m) | पृष्ठ १५

संबंधित प्रश्न

What is meant by the symbol of an element ? Explain with examples.


If the valency of carbon is 4 and that of sulphur is 2, work out the formula of the compound formed by the combination of carbon with sulphur. What is the name of this compound ?


Name the following compounds. Also write the symbols/formulae of the ions present in them :

  1. CuSO4
  2. (NH4)2SO4
  3. Na2O
  4. Na2CO3
  5. CaCl2

Give the formula and valency of:

Aluminate ______ ______

Write chemical formula of the sulphate of Aluminium, Ammonium and Zinc.


Complete the following statement by selecting the correct option :

The correct formula of aluminium oxide is


Identify the following substance:

An alkaline gas A which gives dense white fumes with hydrogen chloride.


Identify the following substance:

Gas B that has an offensive smell as of rotten eggs.


Identify the following substance:

Gas C that is colourless and can be used as a bleaching agent.


Name the element in the compound and give the formula of the following compound:

Ethane


Write the formula of the following compound:

Sodium carbonate


Write the formula of the following compound:

Sodium permanganate


Write the formula of the following compound:

Sodium bicarbonate


Write the formula of the following compound:

Zinc carbonate


Write the formula of the following compound:

Copper [II] sulphate


Write the formula of the following compound:

Lead [II] nitrate


State of the following formula of a compound is incorrect. Incorrectly write the correct formula.

(NH4)3SO4


State of the following formula of a compound is incorrect. Incorrectly write the correct formula.

NaO


State of the following formula of a compound is incorrect. Incorrectly write the correct formula.

KNO3


Complete the following crossword puzzle (Fig. 3.1) by using the name of the chemical elements. Use the data given in Table.

  Across   Down
2 The element used by Rutherford during his α–scattering experiment 1 A white lustrous metal used for making ornaments and which tends to get tarnished black in the presence of moist air
3 An element which forms rust on exposure to moist air 4 Both brass and bronze are alloys of the element
5 A very reactive non–metal stored under water 6 The metal which exists in the liquid state at room temperature
6 Zinc metal when treated with dilute hydrochloric acid produces a gas of this element which when tested with burning splinter produces a pop sound. 8 An element with symbol Pb


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