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

State Four Conditions Necessary for Chemical Reactions to Take Place. - Chemistry

Advertisements
Advertisements

प्रश्न

State four conditions necessary for chemical reactions to take place.

एका वाक्यात उत्तर
Advertisements

उत्तर

Conditions necessary for chemical reactions :

  1. Close contact
  2. Solution form
  3. Heat
  4. Light
  5. Catalyst
shaalaa.com
  या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 5: Language of Chemistry - Exercise

APPEARS IN

सेलिना Concise Chemistry [English] Class 7 ICSE
पाठ 5 Language of Chemistry
Exercise | Q 2

संबंधित प्रश्‍न

When carbon dioxide is passed through lime water, it turns milky due to the formation of ______.


 What are (i) positive catalysts and (ii) negative catalysts? Support your answer with one example for each of them.


Explain the type of reactions on the basis of the direction of reaction.


How is a strong electrolyte different from a weak electrolyte?


 Fill in the blank

A change in which the substance can be brought back to its original state is called a _______ change.


A solution of a substance ‘X’ is used for white washing Name the substance ‘X’ and write its formula.


Give reason for the following:

Molybdenum is used in the manufacture of ammonia.


Multiple choice:

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


Select the correct answer for the following options:

The gas obtained when potassium chlorate is heated in the presence of a catalyst.


Give balanced equation for the following conversion affected by heat alone on the substance:

Ammonium dichromate to nitrogen


Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.


Circle the odd one out. Give reason for your choice


______ change results in the change of the substance.


The simplest method of preventing rusting of iron is to coat it with oil, grease, or paint. The reason being ______.


Galvanization is a process in which ______ is coated as a layer of iron.


How would you show that the settling of curd is a chemical change?


Explain how the painting of an iron gate prevents it from rusting.


When carbon dioxide is passed through lime water ______.


The reaction of H2 gas with oxygen gas to form water is an example of ______.


______ is the chemical name of slaked lime.


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×