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Question
Name the following:
The products obtained during ‘photosynthesis’ – which is a chemical change.
Solution
Glucose and Oxygen.
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RELATED QUESTIONS
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heat.
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MULTIPLE CHOICE QUESTIONS
Tick the most appropriate answer
Which of the following is a reducing agent?
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- none of these
TRUE \ FALSE
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| Apply a burning splint to the gas | ||||
| Colour of gas | colourless | colourless | colourless | greenish-yellow |
| Odour of gas |
Give a chemical test to distinguish between the following gases.
HCl and Cl2
Give a chemical test to distinguish between the following gases.
NH3 and SO2
Select the correct answer for the following options:
The basic gas obtained when two gases react in presence of a catalyst and the reaction is exothermic.
Select the correct answer for the following options:
The gas which reacts with oxygen to give a neutral liquid.
Select the correct answer for the following options:
The pale blue precipitated obtained when copper [II] sulphate reacts with sodium hydroxide.
Give a word equation for the following reaction.
Two gases which combine to give a solid.
A chemical reaction is often accompanied by external indications or characteristics which include –
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- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
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Give balanced equation for the following conversion affected by heat alone on the substance:
Copper carbonate to copper oxide
Complete the table given below.
| Heat on ammonium dichromate | Name of neutral gas evolved |
Explain the term chemical reaction with special reference to reactants and products.
Mention the various conditions required for a chemical reaction to occur.
The changes in which new substance with new chemical properties are formed are ______.
Classify the following as physical or chemical properties
Most metal oxides form alkalis on interacting with water.
Give an example of a chemical reaction for each of the following situations:
A change in colour is observed.
When magnesium is burnt in the air, a new substance is formed which is ______.
Which is used as a catalyst during the process of hydrogenation of oils?
Write a note on the following:
Curdling of milk
Define the following term:
Chemical change
