मराठी
सी.आई.एस.सी.ई.आयसीएसई ICSE Class 7

Name the Type of Chemical Reaction Shown by the Following Equation: Caco3 → Cao + Co2

Advertisements
Advertisements

प्रश्न

Name the type of chemical reaction shown by the following equation:

CaCO3 → CaO + CO2

एका वाक्यात उत्तर
Advertisements

उत्तर

CaCO3 → CaO + CO => Decomposition reaction

shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Language of Chemistry - Additional questions

APPEARS IN

एस.पी. सिंह Concise Chemistry [English] Class 7 ICSE
पाठ 5 Language of Chemistry
Additional questions | Q 8.1

संबंधित प्रश्‍न

Complete and balance the following chemical equations

Na + H2 O →


Fill in the blanK

 A .............is a substance which changes the rate of a chemical reaction without undergoing a chemical change.


FILL IN THE BLANK

In a double decomposition precipitation reaction both the reactants must be ............ soluble.


Fill in the blank:

During a chemical reaction transfer of ________ takes place.


Show with the help of diagram of electronic configuration how the following compound is formed from the constituent atoms.

Potassium fluoride


Give an example of the following chemical change.

Two solids combine to form a liquid


Give an example of the following chemical change.

A reaction where colour change is noticed


Write the chemical reaction where the following changes are observed.

Colour change is noticed


Give an example of a photochemical reaction.


Select the correct answer for the following options:

The black residue obtained on heating copper carbonate.


Give reason for the following:

The catalytic oxidation of sulphur dioxide to sulphur trioxide is represented by a double arrow {⇌} 
between the reactants and products, formed in the chemical reaction.


State the following reaction represent oxidation or reduction.

\[\ce{H->H+}\]


A chemical reaction is often accompanied by external indications or characteristics.


Select the correct answer from the options given below:

State the gaseous product formed, when

An active metal reacts with dilute sulphuric acid.


NPK are the primary nutrients for plants.


Arrange the following statements in correct sequence:

  1. One side is water-loving and other water-hating molecules.
  2. When you agitate the cloth, the dirt is surrounded by many molecules and taken away from the cloth.
  3. The dirt surrounded by the detergent molecules floats in the water making it dirty.
  4. Finally, the cloth is clean.
  5. The detergent molecules have two sides.
  6. Water hating goes and joins with dirt and oil in the cloth while the water-loving joins with the water molecules.

On heating calcium carbonate gets converted into calcium oxide and carbon dioxide.

(a) Is this a physical or a chemical change?

(b) Can you prepare one acidic and one basic solution by using the products formed in the above process? If so, write the chemical equation involved.


State whether the following statement is true or false:

When a candle burns, both physical and chemical changes take place.


The chemical name of baking soda is sodium bicarbonate.


Write five changes in the characteristics of a substance that can take place during a chemical change. 


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×