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सी.आई.एस.सी.ई.आईसीएसई ICSE Class 7

Give a Word Equation for the Following Reaction. Two Solids Which Combine on Heating, to Give a Liquid. - Chemistry

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प्रश्न

Give a word equation for the following reaction.

Two solids which combine on heating, to give a liquid.

एक पंक्ति में उत्तर
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उत्तर

Carbon + Sulphur → Carbon disulphide

C + S → CS(l)

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अध्याय 5: Language of Chemistry - Objective Type Questions

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विराफ जे दलाल New Simplified Middle School Chemistry [English] Class 7
अध्याय 5 Language of Chemistry
Objective Type Questions | Q 2.1

संबंधित प्रश्न

Complete and balance the following chemical equations:

`"H"_2"S"` + `"CI"_2`  `→`  


TRUE \ FALSE

Weak electrolytes dissociate partially in their aqueous or fused state.


Complete the statement by filling the gaps using appropriate term from the terms given in the bracket.

(slow, coloured, arrow, fast, smell, milky, physical, product, chemical, reactant, covalent, ionic, octet, duplet, exchange, sharing, equality sign)

The white particles of baking soda disappear when put in lemon juice. This means that it is a ______ change.


Give an example of a reaction where the following are involved:

Close contact


What do you observe? When

Sodium chloride solution is added to silver nitrate solution.


What do you observe when Cl2 is passed through potassium iodide (KI) solution.


Give a chemical test to distinguish between the following gases. 

HCl and Cl2


Give a chemical test to distinguish between the following gases. 

NH3 and HCl


Distinguish by heating the following in dry test tubs.

Copper Sulphate and copper carbonate


Complete the statement by filling in the blank with the correct word:

The reddish-brown precipitate obtained during a double decomposition precipitation reaction between an iron salt and alkali is __________.


Name the solid residual product formed reaction and state its colour during – thermal decomposition of the following substance.

Lead nitrate.


Higher order Thinking question

A very hot glass on putting in cold water cracks. What does this change indicate?


Water boiling into water vapour is an example of chemical change.


Write some materials prepared by chemical changes.


Melting of wax is a change where a solid changes to liquid state. Give one more such change which you observe in your surroundings


Match the following:

  Column I   Column II
1. Burning of coal a. Rusting
2. Painting of a surface b. Evaporation
3. Dipping iron in the water c. Chemical change
4. Salt from seawater d. Prevention of rusting

When carbon dioxide is passed through lime water ______.


______ is the chemical name of rust.


What is the difference between reactants and products?


Define the following term:

Chemical change


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