Advertisements
Advertisements
प्रश्न
Give the empirical formula of Glucose C6H12O6 .
Advertisements
उत्तर
The empirical formula for glucose is CH2O.
APPEARS IN
संबंधित प्रश्न
Write the chemical formula of the Calcium oxide.
Which of the following represents a correct chemical formula ?
Write chemical formula of the sulphate of Aluminium, Ammonium and Zinc.
Fill in the blank:
Formula of iron (ill) carbonate is _____ .
Give the empirical formula of Acetylene C2H2
Write the formula of the following compound:
Aluminium carbonate
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:
Copper [I] oxide
Write the formula of the following compound:
Iron [II] sulphide
Write the formula of the following compound:
Lead [II] hydroxide
State of the following formula of a compound is incorrect. Incorrectly write the correct formula.
NaZnO2
Find the valency of the element which is underlined in the following formula.
- NaCl
- CO2
- Al (PO4)
- Ba (NO3)2
- CaCl2
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 |
Write the steps that are followed to write down the chemical formula of a substance.
Play a game for writing formula.
Example 1: Make placards with symbols and valencies of the elements separately. Each student should hold two placards, one with the symbol in the right hand and the other with the valency in the left hand. Keeping the symbols in place, students should criss-cross their valencies to form the formula of a compound.
