Advertisements
Advertisements
Question
Name the element in the compound and give the formula of the following compound:
Ethanol
Advertisements
Solution
| Element | Element in compound | Formula |
| Ethanol | Carbon, hydrogen, oxygen | C2H5OH |
APPEARS IN
RELATED QUESTIONS
An element Z has a valency of 3. What is the formula of oxide of Z ?
Work out the formula for sulphur dioxide. (Valencies : S = 4 ; O = 2)
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 ?
Give the formulae of the compounds formed from the following sets of elements :
- calcium and fluorine
- hydrogen and sulphur
- nitrogen and hydrogen
- carbon and chlorine
- sodium and oxygen
- carbon and oxygen
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:
Green vitriol
Write the formula of the following compound:
Potassium dichromate
Write the formula of the following compound:
Potassium iodide
Write the formula of the following compound:
Calcium hydroxide
Write the formula of the following compound:
Copper [I] sulphide
Write the formula of the following compound:
Copper [II] nitrate
Write the formula of the following compound:
Iron [III] oxide
Write the formula of the following compound:
Iron [III] sulphate
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.
Derive the chemical formula for calcium chloride.
