The chemical formula of limestone is

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The chemical formula of limestone is CaCO₃, which stands for calcium carbonate. Limestone is a sedimentary rock that is composed primarily of calcium carbonate.

Limestone forms through the accumulation of shells, coral, and other organic materials over time, and is often used as a building material and as an ingredient in cement. The chemical reaction between calcium carbonate and an acid, such as acetic acid or hydrochloric acid, releases carbon dioxide and results in the formation of calcium acetate or calcium chloride, respectively.

Limestone

Limestone

Limestone is a sedimentary rock with several important physical and chemical properties, including:

Composition: Limestone is primarily composed of calcium carbonate (CaCO₃), with smaller amounts of other minerals such as clay, sand, and organic matter.
Color: Limestone can range in color from white to gray, yellow, and even black, depending on the presence of impurities and minerals.
Hardness: Limestone is relatively soft compared to other types of rocks, with a hardness of 3 on the Mohs scale.
Texture: Limestone has a grainy texture, with a visible accumulation of small grains or fragments.
Porosity and Permeability: Limestone is relatively porous, which means that it can absorb and hold water. However, it is also relatively permeable, which means that water can easily pass through it.
Reactivity: Limestone is chemically reactive, and can react with acids to form calcium salts and release carbon dioxide gas.
Use: Limestone has many uses, including as a building material, as an ingredient in cement, as a soil amendment, and as a filler in a variety of industrial products.

These properties, along with its abundant availability and low cost, make limestone a widely used and versatile material in a variety of industries and applications.

Also check:

Important Learning Concepts
Sedimentary Rocks	Mineral and Energy Resources	Difference between Rocks and Minerals
Aquatic Ecosystem	Marine Biology	Importance of Water

CBSE CLASS XII Related Questions

1.
(a) What are anomers ? Explain.
(b) What happens when glucose reacts with hydroxylamine ? Write the reaction involved.
(c) Name the disease caused by the deficiency of Vitamin B\(_{12}\).

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2.
Consider the decomposition of hydrogen peroxide \( (\mathrm{H_2O_2}) \) as per the equation given below : \[ 2\mathrm{H_2O_2} \xrightarrow[\text{Alkaline medium}]{I^-} 2\mathrm{H_2O} + \mathrm{O_2} \] The mechanism for this reaction was found to be : Step I : \( \mathrm{H_2O_2} + I^- \longrightarrow \mathrm{H_2O} + IO^- \) (slow) Step II : \( \mathrm{H_2O_2} + IO^- \longrightarrow \mathrm{H_2O} + I^- + \mathrm{O_2} \) (fast) (a) Write the rate law expression. (b) Determine the order of reaction with respect to \( \mathrm{H_2O_2} \), \( I^- \) and overall order of reaction. (c) What is the molecularity of the reaction in Step II ?

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3.
Conductivity of \( 2.5 \times 10^{-4} \) M methanoic acid solution is \( 5.25 \times 10^{-5} \) S cm\(^{-1}\).
(a) Calculate its molar conductivity.
(b) Calculate its degree of dissociation.
[Given : \( \lambda^{\circ}_{(\mathrm{H^+})} = 349.5 \) S cm\(^2\) mol\(^{-1}\) and \( \lambda^{\circ}_{(\mathrm{HCOO^-})} = 50.5 \) S cm\(^2\) mol\(^{-1}\)]

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4.
(i) Give a chemical test to distinguish between Propanal and Propanone.
(ii) Which of the given acids is stronger and why ? \( \mathrm{F_3C{-}C_6H_4{-}COOH} \) or \( \mathrm{H_3C{-}C_6H_4{-}COOH} \)
(iii) Complete the given reaction sequence :
\[ \mathrm{CH_3CH_2CH_2COOC_2H_5} \xrightarrow{\mathrm{NaOH}} \mathrm{A + C_2H_5OH} \]
\[ \mathrm{A} \xrightarrow{\mathrm{H_3O^+}} \mathrm{B} \]

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5.
An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it:
(I) does not give Tollen's test but gives a positive iodoform test.
(II) does not give Tollen's test and iodoform test but undergoes Aldol condensation.
(III) undergoes Cannizzaro's reaction.

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6.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

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The chemical formula of limestone is

CBSE CLASS XII Related Questions

1.
(a) What are anomers ? Explain.
(b) What happens when glucose reacts with hydroxylamine ? Write the reaction involved.
(c) Name the disease caused by the deficiency of Vitamin B\(_{12}\).

5.
An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it:
(I) does not give Tollen's test but gives a positive iodoform test.
(II) does not give Tollen's test and iodoform test but undergoes Aldol condensation.
(III) undergoes Cannizzaro's reaction.

6.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

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The chemical formula of limestone is

CBSE CLASS XII Related Questions

1.(a) What are anomers ? Explain.(b) What happens when glucose reacts with hydroxylamine ? Write the reaction involved.(c) Name the disease caused by the deficiency of Vitamin B\(_{12}\).

5.An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it: (I) does not give Tollen's test but gives a positive iodoform test. (II) does not give Tollen's test and iodoform test but undergoes Aldol condensation. (III) undergoes Cannizzaro's reaction.

6.(a) Write two structural differences between DNA and RNA.(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?

Comments

SUBSCRIBE TO OUR NEWS LETTER

1.
(a) What are anomers ? Explain.
(b) What happens when glucose reacts with hydroxylamine ? Write the reaction involved.
(c) Name the disease caused by the deficiency of Vitamin B\(_{12}\).

5.
An organic compound (X) has the molecular formula \(C_5H_{10}O\). Draw structures for (X) if it:
(I) does not give Tollen's test but gives a positive iodoform test.
(II) does not give Tollen's test and iodoform test but undergoes Aldol condensation.
(III) undergoes Cannizzaro's reaction.

6.
(a) Write two structural differences between DNA and RNA.
(b) Which component of starch is a branched chain polymer of \( \alpha \)-D-(+)-glucose ? Write its one characteristic feature.
(c) Which types of bonds hold the polypeptide chains in fibrous proteins ?