PRACTICE TEST 2-Class 10 – Science -Chemistry -Chapter 1 – Chemical Reaction and Equation

The mixture of carbon and sulphur is separated by using the solution of _________.

Which of the following is not a characteristic of a chemical reaction?

The color of the coating formed on the metals such as iron, silver, and copper after corrosion will be:

Balancing of equations is based on:

Combustion reaction of coal is a/an __________ reaction.

Study the following chemical reactions.
$$Fe+CuSO_{4}\rightarrow FeSO_{4}+Cu$$
$$
$$2AgNO_{3}+Cu\rightarrow Cu(NO_{3})_{2}+2Ag$$
The metals present in the reactions can be written in the increasing order of reactivity as:

Chemical volcano is an example of:

Which of the following process involves chemical reaction?

Identify the product(s) which will be formed by using the information provided about the reactants:
$$Al(s) + O_{2}(g) \rightarrow $$

Choose the incorrect statement

Which of the following pairs will give displacement reactions?

Anhydrous iron (III) chloride is prepared by:

Which information is not conveyed by a balanced chemical equation?

Take 5 mL of sodium sulphate solution in a test tube and 5 mL of barium chloride solution in another test tube. Mix the two solutions slowly and leave the test tube undisturbed for some time. A white precipitate is formed after some time.

When sodium hydroxide solution is added to copper sulfate solution, a blue precipitate of copper hydroxide is formed along with sodium sulfate solution. What kind of chemical reaction takes place between them?

You mix two colourless solutions and the resulting mixture becomes cloudy. What type of reaction is observed?

Balanced chemical equations imply which of the following?

Calcium oxide reacts vigorously with water to produce slaked lime.
$$CaO(s)+ H_{2}O(l)\rightarrow Ca(OH)_{2}(aq)+ heat$$
This reaction can be classified which of the following?

(i) Reaction between calcium oxide and water is a _______ reaction

Identify the type reaction from the following.
$$H_{2}CO_{3}(aq)\rightarrow H_{2}O(l)+CO_{2}(g)$$