English

Write True Or False. a Chemical Equation Gives Only Qualitative Information of a Chemical Reaction .

Advertisements
Advertisements

Question

Write true or false.

A chemical equation gives only qualitative information of a chemical reaction.

Options

  • True

  • False

MCQ
True or False
Advertisements

Solution

False

shaalaa.com
  Is there an error in this question or solution?
Chapter 5: Language of Chemistry - Objective type questions

APPEARS IN

Selina Concise Chemistry [English] Class 7 ICSE
Chapter 5 Language of Chemistry
Objective type questions | Q 2.6

RELATED QUESTIONS

Define precipitation reaction.


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


Differentiate between in Chemical reaction and chemical equation.


Fill in the blank:
The substances which undergo chemical change are called _______


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)

Oxygen is a ______ in respiration.


Write the chemical reaction where the following changes are observed.

Precipitate is formed


What do you understand by precipitation reaction? Explain with examples.


What do you observe when HCI is passed through a silver nitrate solution.


Write your observation and a balanced equation in the case of the following substances being heated.

Zinc carbonate.


Select the correct answer for the following options:

The black residue obtained on heating copper carbonate.


Give reason for the following:

Electrolytic decomposition of water is a reaction involving change of state.


On heating which of the following substances i.e. copper carbonate, zinc carbonate, washing soda, copper sulphate, zinc nitrate, copper nitrate, lead nitrate, ammonium chloride and ammonium dichromate – relate to the reaction given below.

A coloured substance which leaves a black residue and evolves two gases one of which is acidic and coloured and the other neutral and colourless.


Complete the table given below.

Heat on ammonium dichromate Name of neutral gas evolved  

State the following reaction represent oxidation or reduction.

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


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

Copper nitrate.


Which of the following is not an “element + element → compound” type reaction?


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.


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


We are advised to not to play with fireworks. Give reason.


What is the difference between reactants and products?


Share
Notifications

Englishहिंदीमराठी


      Forgot password?
Use app×