MCQ
In the following Questions, the Assertion and Reason have been put forward. Read the statements carefully and choose the correct alternative from the following:
Assertion : $\mathrm{Cu}_2 \mathrm{Cl}_2$ is more covalent than $\text{NaCl} .$
Reason : $\mathrm{Cu}^{+}$has more polarising power than $\mathrm{Na}^{+}$con..
  • A
    Both Assertion and Reason are true and Reason is the correct explanation of Assertion.
  • Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.
  • C
    Assertion is true but Reason is false.
  • D
    Both Assertion and Reason are false.

Answer

Correct option: B.
Both Assertion and Reason are true but Reason is not the correct explanation of Assertion.

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Similar questions

Note : In the following questions a statement of assertion $(A)$ followed by a statement of reason $(R)$ is given. Choose the correct option out of the choices given below each question.
Assertion $(A)$ : The decomposition of hydrogen peroxide to form water and oxygen is an example of disproportionation reaction.
Reason $(R)$ : The oxygen of peroxide is in $–1$ oxidation state and it is converted to zero oxidation state in $\mathrm{O}_2$ and –2 oxidation state in $\mathrm{H}_2 \mathrm{O}$.
Assertion: A spectral line will be seen for a $2 p_x \rightarrow 2 p_y$ transition.
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Assertion (A): Splitting of the spectral lines in the presence of a magnetic field is known as the Stark effect.
Reason (R): The line spectrum is simplest for the hydrogen atoms.
Note : In the following questions a statement of assertion $(A)$ followed by a statement of reason $(R)$ is given. Choose the correct option out of the choices given below each question.
Assertion $(A)$ : Redox couple is the combination of oxidised and reduced form of a substance involved in an oxidation or reduction half cell.
Reason $(R)$ : In the representation $\text{E}^\ominus_{\text{Fe}^{3+}/\text{Fe}^{2+}}$ and $\text{E}^\ominus_{\text{Cu}^{2+}/\text{Cu}},\text{Fe}^{3+}/\text{Fe}^{2+}$ and $\text{Cu}^{2+}/\text{Cu}$ are redox couples.
Directions : In the following questions, the Assertions $(A)$ and Reason $(s) (R)$ have been put forward. Read both the statements carefully and choose the correct alternative from the following:
Assertion : In $p -$ block elements a lot of variation in properties of elements in a group is observed.
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Assertion (A): Law of conservation of mass hold good for nuclear reaction.
Reason (R): Law states that mass can be neither created nor destroyed in a chemical reaction.
Assertion (A): Molarity of a solution represents its concentration.
Reason (R): Molarity is the number of moles of solute per litre of solution.
Note : In the following questions a statement of Assertion $(A)$ followed by a statement of reason $(R)$ is given. Choose the correct option out of the choices given below each question.
Assertion $(A)$ : Boron has a smaller first ionisation enthalpy than beryllium.
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Assertion $(A)$ : A liquid crystallises into a solid and is accompanied by decrease in entropy.
Reason $(R)$ : In crystals, molecules organise in an ordered manner.
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