मराठी

State of the following formula of a compound is incorrect. Incorrectly write the correct formula. KNO3

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प्रश्न

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

KNO3

एका वाक्यात उत्तर
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उत्तर

KNO3 is the correct formula.

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पाठ 1: The Language Of Chemistry - The Language Of Chemistry

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विराफ जे. दलाल Simplified ICSE Chemistry [English] Class 9
पाठ 1 The Language Of Chemistry
The Language Of Chemistry | Q 2.07

संबंधित प्रश्‍न

What do the following abbreviations stand for ?

  1. O
  2. 2O
  3. O2
  4. 3O2

An element Y has a valency of 4. Write the formula for its :

  1. chloride
  2. oxide
  3. sulphate
  4. carbonate
  5. nitrate

Give the formula and valency of:
cupric  ………………… . 


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


Identify the following substance:

A brown gas D with the irritating smell.


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

Ethanol


Write the formula of the following compound: 
Potassium chloride

Write the formula of the following compound: 
Potassium sulphite

Write the formula of the following compound:

Potassium bisulphite


Write the formula of the following compound:

Magnesium sulphate


Write the formula of the following compound:

Zinc carbonate


Write the formula of the following compound:

Zinc oxide


Write the formula of the following compound:

Aluminium hydroxide


Write the formula of the following compound:

Aluminium oxide


Write the formula of the following compound:

Tetra amine copper [II] sulphate


Write the formula of the following compound:

Iron [III] hydroxide


Find the valency of the element which is underlined in the following formula.

  1. NaCl
  2. CO2
  3. Al (PO4)
  4. Ba (NO3)2
  5. CaCl2

Which of the following represents a correct chemical formula? Name it.


Which of the following represents a correct chemical formula? Name it.

BiPO4


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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