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 susbtances takes place to form new bonds between the atoms forming new substances called as 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 chemical reaction involves the transformation of reactants into products with different properties. This change occurs because the chemical bonds between the atoms in the reactants are broken, and new bonds are formed to create the products.
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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
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- 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.