हिंदी

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

Advertisements
Advertisements

प्रश्न

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

NaO

एक पंक्ति में उत्तर
Advertisements

उत्तर

NaO

Correct formula – Na2O

shaalaa.com
  क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 1: The Language of Chemistry - For Additional High Order Thinking Questions [पृष्ठ १८]

APPEARS IN

विराफ जे दलाल Simplified ICSE Chemistry [English] Class 9
अध्याय 1 The Language of Chemistry
For Additional High Order Thinking Questions | Q 3. 2. I. | पृष्ठ १८

संबंधित प्रश्न

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


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 ?


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 ?


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

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

Write the formula of the following compound:

Potassium sulphate


Write the formula of the following compound:

Potassium bicarbonate


Write the formula of the following compound:

Potassium hydroxide


Write the formula of the following compound:

Potassium bisulphite


Write the formula of the following compound:

Sodium bisulphite


Write the formula of the following compound:

Zinc oxide


Write the formula of the following compound:

Aluminium carbonate


Write the formula of the following compound:

Copper [II] sulphate


Write the formula of the following compound:

Iron [III] chloride 


Write the formula of the following compound:

Silver [I] chloride


Write the molecular formulae for the following compounds

Calcium (II) phosphate


Write the molecular formulae for the following compounds

Magnesium (II) acetate


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


There are ______ hydrogen atoms in water molecule.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×