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प्रश्न
Fill in the blank:
The substances formed as a result of a chemical reaction are called _______
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उत्तर
The substances formed as a result of a chemical reaction are called products .
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संबंधित प्रश्न
State whether the following statement is true or false. In case a statement is false, write the corrected statement.
Formation of manure from leaves is a physical change.
Write the missing reactants and products and balance the equations.
NaOH + ............... `→` NaCI + ...................
What are homogenous reactions ?
True or false
New substances are formed in a chemical change.
A chemical equation is a statement that describes a chemical change in terms of
Explain the following reaction with one suitable example of Combination reactions .
Explain the following reaction with one suitable example of Double decomposition reaction.
Give an example of a reaction where the following are involved
Electricity
Write the chemical reaction where the following changes are observed.
Physical state is changed
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
Name affects the acidified K2Cr2O7 paper and also turns lime water dirty milky.
State the original colour of the following substance and colour of residue obtained after heating.
Copper carbonate
Select the correct answer for the following options:
The gas which reacts with oxygen to give a neutral liquid.
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.
| Addition of dil. H2SO4 to FeS | Odour of gas evolved |
Complete the table given below.
| Flame test for calcium chloride | Acid used for flame test |
Anaerobic bacteria digest animal waste and produce biogas (Change – A). The biogas is then burnt as fuel (Change – B). The following statements pertain to these changes. Choose the correct one.
Write the chemical reaction of baking soda with lemon.
What are the chemical reactions that occur in everyday life?
