मराठी

State of the following formula of a compound is incorrect. Incorrectly write the correct formula. (NH4)3SO4

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प्रश्न

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

(NH4)3SO4

एका वाक्यात उत्तर
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उत्तर

(NH4)3SO4

Correct formula – (NH4)2SO4

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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 2.01

संबंधित प्रश्‍न

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


What is the difference between 2H and H2 ?


An element Z has a valency of 3. What is the formula of oxide of Z ?


Name the elements water is made of. What are the valencies of these elements ? Work out the chemical
formula for water.


An element X has a valency of 4 whereas  another element Y has a valency of 1. What will be the formula of the compound formed between X and Y ?


Correct the following statement:

A molecular formula represents an element.


Identify the following substance:

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


Match the following:

Column A Column B
(a) Pb(NO3)2 (i) rotten eggs smell
(b) CO2 (ii) burns with a pop sound
(c) (NH4)2Cr2O7 (iii) the suffocating smell of sulphur
(d) HCI (iv) lime water turns milky
(e) NO2 (v) crackling sound
(f) O2 (vi) residue swells up
(g) H2 (vii) brown gas
(i) H2S (viii) supports combustion
(j) SO2 (ix) fumes with NH3 solution

What is a chemical formula? What is the significance of a formula?give an example to illustrate?​


Write the formula of the following compound: 
Potassium sulphite

Write the formula of the following compound:

Potassium nitrite


Write the formula of the following compound:

Sodium aluminate


Write the formula of the following compound:

Calcium carbonate


Write the formula of the following compound:

Magnesium nitrate


Write the formula of the following compound:

Aluminium chloride


Write the formula of the following compound:

Copper [II] sulphide


Write the formula of the following compound:

Iron [II] chloride 


Write the formula of the following compound:

Lead [II] 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

What is a chemical formula?


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