Home
Class 12
CHEMISTRY
A: A: Calamine and Dolomite are the car...

A: A: Calamine and Dolomite are the carbonate ores.
R: Calamine is `ZnCO_3` whereas Dolomite is `MgCO_3` `ZnCO_3`

A

If both Assertion & Reason are true and the reason is the correct explanation of the assertion, then mark (1).

B

If both Assertion & Reason are true but the reason is not the correct explanation of the assertion, then mark (2)

C

If Assertion is true statement but Reason is false, then mark

D

If both Assertion and Reason are false statements, then mark (4)

Text Solution

AI Generated Solution

The correct Answer is:
To solve the question regarding the assertion and reason about Calamine and Dolomite, we will analyze both statements step by step. ### Step 1: Analyze the Assertion The assertion states: "Calamine and Dolomite are the carbonate ores." - **Explanation**: Both Calamine and Dolomite are indeed classified as carbonate ores. Calamine is primarily known as a source of zinc, while Dolomite is a source of magnesium and calcium. ### Step 2: Analyze the Reason The reason states: "Calamine is ZnCO3 whereas Dolomite is MgCO3 ZnCO3." - **Explanation**: Calamine is correctly identified as Zinc carbonate (ZnCO3). However, Dolomite is not just MgCO3; it is actually a double carbonate of calcium and magnesium, typically represented as CaMg(CO3)2. Therefore, the statement about Dolomite being MgCO3 ZnCO3 is incorrect. ### Step 3: Conclusion - **Assertion**: True (Calamine and Dolomite are carbonate ores) - **Reason**: False (Calamine is ZnCO3, but Dolomite is not just MgCO3) Thus, the correct answer is that the assertion is true while the reason is false. ### Final Answer: The assertion is true, and the reason is false. ---
Promotional Banner

Topper's Solved these Questions

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    AAKASH INSTITUTE ENGLISH|Exercise Assignment (Section-C) Previous Years Question|33 Videos

  • EQUILIBRIUM

    AAKASH INSTITUTE ENGLISH|Exercise ASSIGNMENT (SECTION -D)|20 Videos

  • GENERAL PRINCIPLES AND PROCESSES OF ISOLATION OF ELEMENTS

    AAKASH INSTITUTE ENGLISH|Exercise Try Yourself|33 Videos

Similar Questions

Explore conceptually related problems

Select the basic and acidic radicals in the ZnCO_3 .

Valency of a carbonate (CO_(3)) radical is

A carbonate that does not decompose on heating is _____ (K_2CO_3 // CaCO_3)

Consider the following statements : S_(1) : In extration of iron from haematite ore, the reduction reactions take place only in the lower temperature range in the blast furnace. S_(2) : Calamine in an carbonate ore of zince. S_(3) : The principle ore of aluminium , bauxite , usually contains silica, iron oxides and titanium oxide as impurities. S_(4) : Solidified copper obtained from silica lined conventor ( Bessemer converter ) has blistered appearance due to the evolution of SO_(2) . Which are correct statements?

Which of the following has 3^@ carbon

Bauxite (Al_(2)O_(3).2H_(2)O) and Aluminosilicate both are ores of aluminium. Bauxite is found on earth but not on Mars whereas Aluminosilicate is found on earth as well as Mars. Possible reason is:

Give an equation for the conversions- [i] ZnSO_(4) " to " ZnCO_(3) [ii] ZnCO_(3) " to " Zn(NO_(3))_(2)

Select the basic and acidic radicals in the following compounds ZnCO_3

Write the thermal decomposition reaction of following compounds MgCO_3

The following compounds have been arranged in order of their increasing thermal stabilities. Identify the correct order: K_2CO_3 (I) MgCO_3 (II) CaCO_3 (III) BeCO_3 (IV):