Chemistry
Assertion (A): A chemical reaction is a process which involves the transformation of one or more substances into new substances with entirely different properties.
Reason (R): Breaking of chemical bonds between the atoms of reacting substances takes place to form new bonds between the atoms forming new substances called products.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Chemical Reaction
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Answer
Both A and R are true and R is the correct explanation of A.
Explanation — A is true as a chemical reaction involves the transformation of reactants into products with different properties.
R is true as this change occurs because the chemical bonds between the atoms in the reactants are broken, and new bonds are formed to create the products.
Therefore, Both A and R are true and R is the correct explanation of A is the correct option.
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Related Questions
When copper metal is added to a solution of silver nitrate, the colour of the solution changes to blue. This shows:
- copper is less reactive than silver
- copper is more reactive than silver
- both are equally reactive
- none of the above
Which of the following equations represents an endothermic reaction?
- C + O2 CO₂
- CaO + H2O → Ca(OH)2
- NaOH + HCl → NaCl + H₂O
- CaCO3 CaO + CO₂
Assertion (A): A chemical equation must be balanced in order to follow the law of conservation of mass.
Reason (R): A chemical equation called as skeletal equation may not have equal number of atom of each element present in the reactants and products.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.
Assertion (A): The reaction of an acid with a base to produce salt and water is called a neutralisation reaction.
Reason (R): Neutralisation reaction is a double displacement reaction.
- Both A and R are true and R is the correct explanation of A.
- Both A and R are true but R is not the correct explanation of A.
- A is true but R is false.
- A is false but R is true.