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

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

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

Which of the following pairs will give displacement reactions?

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?

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:

Balanced chemical equations imply which of the following?

Combustion reaction of coal is a/an __________ reaction.

Anhydrous iron (III) chloride is prepared by:

Choose the incorrect statement

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

Chemical volcano is an example of:

Which of the following process involves chemical reaction?

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

Which information is not conveyed by a balanced chemical equation?

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

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?

Balancing of equations is based on:

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

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

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.