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
Write the missing reactants and products and balance the equations.
NaOH + ............... `→` NaCI + ...................
TRUE \ FALSE
Positively charged electrode is called the anode. True or false ?
Define electrolysis.
What are the characteristics of a chemical reaction ? A chemical reaction is characterised by an irreversible change in which a new substance is formed.
State the conditions necessary for a chemical change or reaction.
Give a chemical test to distinguish between the following gases.
HCl and H2S
Name the following:
The products obtained during ‘photosynthesis’ – which is a chemical change.
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
What is the use of indicator?
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
What changes do you expect?
