Advertisements
Advertisements
Question
Name the following:
The products obtained during ‘photosynthesis’ – which is a chemical change.
Advertisements
Solution
Glucose and Oxygen.
APPEARS IN
RELATED QUESTIONS
What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.
Complete and balance the following chemical equations:
`"H"_2"S"` + `"CI"_2` `→`
Complete and balance the following chemical equations:
Fe `"SO"_4` + NaOH `→`
(aq.) (aq.)
Fill in the blank.
The formation of gas bubbles in a liquid during a reaction is called ......................
TRUE \ FALSE
A precipitation reaction takes place only in a solution.
TRUE \ FALSE
Weak electrolytes dissociate partially in their aqueous or fused state.
TRUE \ FALSE
The evolution of a gas during a chemical reaction is shown by an arrow pointing downwards. True or false ?
How is a strong electrolyte different from a weak electrolyte?
Write true or false :
Hydrogen sulphide has rotten egg smell .
Write true or false :
When potassium iodide solution is added to lead acetate solution a red precipitate is formed.
Copper carbonate when heated, it turns :
Give an example of the following chemical change.
A reaction where colour change is noticed
Name: Two carbonates do not produce carbon dioxide on heating.
Name: Two nitrates that do not produce nitrogen dioxide on heating.
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Give examples of exothermic reactions i.e. heat evolved in each of the following:
(a) reaction between a solid and a liquid
(b) reaction between two gases
Give two examples of exothermic reactions seen in everyday life.
Name the following:
The type of change physical or chemical involved – ‘during respiration in human beings’.
Photosynthesis is a chemical reaction that takes place in the presence of ______.
When lithium metal is placed in hydrochloric acid, _______ gas is evolved.
Give an example of a chemical reaction for the following situation:
A change in colour is observed
