Advertisements
Advertisements
Question
Photosynthesis is a chemical reaction that takes place in the presence of ______.
Solution
Photosynthesis is a chemical reaction that takes place in the presence of Sunlight.
APPEARS IN
RELATED QUESTIONS
TRUE \ FALSE
A precipitation reaction takes place only in a solution.
What do you observe when :
an iron nail is kept in tap water for few days
Fill in the blank
A new substance is always formed in a _______ change.
Fill in the blank
A new substance is formed in a _______ change.
What is a chemical reaction?
Complete the table given below.
Addition of dil. H2SO4 to KHCO3 | Name of residue obtained |
Classify the following as physical or chemical properties
Zinc dissolves in hydrochloric acid with the evolution of hydrogen gas.
On heating calcium carbonate gets converted into calcium oxide and carbon dioxide.
(a) Is this a physical or a chemical change?
(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.
Which of the following statement is incorrect for a chemical reaction?
Acid rain is a result of ______.