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प्रश्न
Balancing a chemical equation is based on
पर्याय
Law of conservation of mass
Mass of reactants and products
Symbols and formulae
None of the above
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उत्तर
Law of conservation of mass.
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संबंधित प्रश्न
What do you observe when iron nail is kept in copper sulphate solution for sometime.
What are biocatalysts ?
What do you observe when :
an iron nail is kept in tap water for few days
Choose the correct option from the bracket and explain the statement giving reason.
(Oxidation, displacement, electrolysis, reduction, zinc, copper, double displacement, decomposition)
To prevent rusting, a layer of ______ metal is applied on iron sheets.
Explain by writing a word equation.
Respiration is a chemical change.
Explain by writing a word equation.
Limestone powder disappears on adding to dilute hydrochloric acids.
State the type of reactions for the following represent and balance the ones that are not balanced.
NaOH + HCl → NaCl + H2O
Complete and balance the following reaction:
NaCl(aq) + AgNO3(aq) →
State the original colour of the following substance and colour of residue obtained after heating.
Ammonium dichromate
Distinguish by heating the following in dry test tubs.
Copper Sulphate and copper carbonate
Explain the Silver nitrate solution is kept in coloured reagent bottles in the laboratory.
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 __________.
Select the correct answer from the options given below:
State the gaseous product formed, when
An ammonium salt reacts with an alkali.
Circle the odd one out. Give reason for your choice
The water we drink is a combination of hydrogen and oxygen.
Which of the following is a chemical change?
Give an example of a chemical reaction for the following situation:
A change in colour is observed
A student took a solution of copper sulphate in a beaker and put a clean iron nail into it and left it for about an hour.
What changes do you expect?
Acid rain is a result of ______.
