Advertisements
Advertisements
Question
State the original colour of the following substance and colour of residue obtained after heating.
Ammonium dichromate
Advertisements
Solution
Ammonium dichromate is a bright orange-red crystalline solid. It is readily ignited and burns to produce a voluminous green residue.
APPEARS IN
RELATED QUESTIONS
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer.
Miscible liquids having slightly different boiling points can be separated by the
- evaporation
- distillation
- fractional distillation
- sedimentation
Fill in the blank:
During a chemical reaction transfer of ________ takes place.
State the main characteristics of chemical reactions. Give at least one example in each case.
Write your observation and a balanced equation in the case of the following substances being heated.
Zinc carbonate.
Select the correct answer for the following options:
The black residue obtained on heating copper carbonate.
Give a word equation for the following reaction.
Two gases which combine to give a solid.
Complete the table given below.
| Heat on iodine crystals | Colour of vapours evolved |
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
The chemical name of baking soda is sodium bicarbonate.
