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प्रश्न
Fill in the blank:
The substances formed as a result of a chemical reaction are called _______
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उत्तर
The substances formed as a result of a chemical reaction are called products .
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संबंधित प्रश्न
Give one example that illustrates the following characteristics of a chemical reaction:
Change in state
TRUE \ FALSE
Weak electrolytes dissociate partially in their aqueous or fused state.
TRUE \ FALSE
Evaporation of water is a physical change. True or false ?
Explain the following reaction with one suitable example of Combination reactions .
What do you observe? When
Barium chloride is added to sodium sulphate solution
What do you observe? When
Water is added to the quick lime.
Name affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
A chemical reaction is often accompanied by external indications or characteristics which include –
- Colour change
- Effervescence or gas evolved
- Evolution or absorption of heat
- Formation of a precipitate.
With reference to each of the above indications, state the external indication seen during – Addition of dilute hydrochloric acid to silver nitrate.
State the following reaction represent oxidation or reduction.
\[\ce{Cu++->Cu}\]
State the following reaction represent oxidation or reduction.
\[\ce{Al->Al+++}\]
Complete the statement by filling in the blank with the correct word:
The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.
Select the correct answer from the options given below:
State the gaseous product formed, when
An active metal reacts with dilute sulphuric acid.
The chemical change is ______.
Which of the following is/are true when milk changes into curd?
- Its state is changed from liquid to semi solid.
- It changes colour.
- It changes taste.
- The change cannot be reversed.
Choose the correct option from below:
Give an example of a chemical reaction for the following situation:
A change in colour is observed
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.
Are these changes chemical in nature?
When magnesium is burnt in the air, a new substance is formed which is ______.
The chemical name of baking soda is sodium bicarbonate.
Write the equation for the process of formation of rust.
We are advised to not to play with fireworks. Give reason.
