Assertion-Reason Questions for Chemistry Exam

<p>Assertion and Reason both are true and Reason is the correct explanation for Assertion. (D)</p> Signup and view all the answers

<p>Assertion is true but Reason is false. (C)</p> Signup and view all the answers

<p>Assertion is true but Reason is false. (B)</p> Signup and view all the answers

<p>Assertion is false but Reason is true. (C)</p> Signup and view all the answers

<p>Assertion is true but Reason is false. (B)</p> Signup and view all the answers

<p>Assertion and Reason both are true and Reason is the correct explanation for Assertion. (C)</p> Signup and view all the answers

<p>Assertion and Reason both are true but Reason is not the correct explanation for Assertion. (D)</p> Signup and view all the answers

<p>Both Pb and PbO are produced. (B)</p> Signup and view all the answers

<p>Ligands have the same relative position to the metal atom. (B)</p> Signup and view all the answers

<p>It changes due to volume variation. (C)</p> Signup and view all the answers

<p>[Ti(H2O)6]3+ is colored and [Sc(H2O)6]3+ is colorless. (D)</p> Signup and view all the answers

<p>[Mn(CN)6]3− (B)</p> Signup and view all the answers

<p>Degree of dissociation increases. (B)</p> Signup and view all the answers

<p>Diffusion occurs from high concentration to low concentration. (D)</p> Signup and view all the answers

<p>It is stabilized by inductive effect. (D)</p> Signup and view all the answers

<p>It is compensated by hydration energy of Cu²⁺. (D)</p> Signup and view all the answers

<p>They have no hydrogen atoms attached. (D)</p> Signup and view all the answers

<p>Mercury cells maintain a constant voltage during their operational life. (D)</p> Signup and view all the answers

<p>It cannot be determined using the extrapolation method. (A)</p> Signup and view all the answers

<p>It decreases their reactivity towards nucleophilic substitution. (D)</p> Signup and view all the answers

<p>Rate remains constant regardless of changes in concentration. (D)</p> Signup and view all the answers

<p>There is a depression in freezing point observed. (A)</p> Signup and view all the answers

<p>They are lesser than the predicted values. (D)</p> Signup and view all the answers

<p>They react with silver ions. (D)</p> Signup and view all the answers

<p>It lowers the freezing point of water. (B)</p> Signup and view all the answers

<p>Ferricyanide shows more splitting than ferrocyanide. (A)</p> Signup and view all the answers

<p>It is used to find molar conductivity at infinite dilution. (D)</p> Signup and view all the answers

<p>Lower vapor pressure affects molecular interaction. (B)</p> Signup and view all the answers

<p>It is stabilized by resonance effects. (A)</p> Signup and view all the answers

<p>Increased solute concentration results in greater freezing point depression. (C)</p> Signup and view all the answers

<p>Their efficiency ranges between 60-70%. (B)</p> Signup and view all the answers

<p>JavaScript must be enabled in the web browser (A)</p> Signup and view all the answers

<p>The test can be taken at any time before a specific date (D)</p> Signup and view all the answers

<p>To measure a person's knowledge of the subject matter for board exams (D)</p> Signup and view all the answers

<p>It provides a sample paper for users to familiarize themselves with the question types available on the Cognitive Conquest test (B)</p> Signup and view all the answers

<p>Select the option that indicates both the assertion and the reason are false (D)</p> Signup and view all the answers

<p>Interactive question types like drag-and-drop or fill-in-the-blanks (B)</p> Signup and view all the answers

<p>The test will no longer be available after 8th February (C)</p> Signup and view all the answers

<p>The Specimen Paper 2025 gives users an idea of the question types and difficulty level of the actual test (C)</p> Signup and view all the answers

<p>It increases and the mobility of ions increases. (B)</p> Signup and view all the answers

<p>Chlorobenzene's chlorine-carbon bond has partial double bond character due to resonance. (D)</p> Signup and view all the answers

<p>It decreases due to decreased van der Waals forces. (A)</p> Signup and view all the answers

<p>It facilitates bromination even in the absence of a Lewis acid. (C)</p> Signup and view all the answers

<p>Order is determined experimentally, while molecularity is the sum of the reaction coefficients. (B)</p> Signup and view all the answers

<p>It decreases, leading to lower concentration. (B)</p> Signup and view all the answers

<p>It makes the bond more rigid, hindering substitution. (B)</p> Signup and view all the answers

<p>Phenol's -OH group has a unique activating effect. (D)</p> Signup and view all the answers

<p>Ion mobility increases with dilution. (D)</p> Signup and view all the answers

<p>The concentration of undissociated molecules is lower, promoting ionization. (A)</p> Signup and view all the answers

<p>Increased distances between molecules decrease intermolecular attractions. (D)</p> Signup and view all the answers

<p>It exhibits enhanced stability due to resonance. (D)</p> Signup and view all the answers

<p>It enhances nucleophilicity by making the phenolic oxygen more reactive. (C)</p> Signup and view all the answers

<p>Molecularity is always a whole number in elementary reactions. (C)</p> Signup and view all the answers

A statement that is claimed to be true.

An explanation or justification for an assertion.

An assertion that is correct or factual.

An assertion that is incorrect or not factual.

A question format requiring evaluation of both assertion and reason.

Choose when both assertion and reason are false.

When the reason accurately supports the assertion.

Sample tests used for practice or evaluation.

An explanation that supports or clarifies an assertion.

A chemical reaction where the rate depends only on the concentration of one reactant.

The time required for the concentration of a reactant to decrease by half.

A chemical reaction that decreases the electron density on nitrogen.

Fat-soluble vitamins stored in liver and adipose tissue.

Thymine is in DNA, Uracil is in RNA.

Interaction where Adenine bonds with Thymine and Guanine bonds with Cytosine.

An enzyme in humans that breaks down cellulose into glucose.

A functional group present in glucose's open chain structure.

Glucose is relatively unreactive in certain conditions.

Acetylation reduces electron density on nitrogen, affecting bonding.

Refers to substances that dissolve in fats and oils.

The connection between an assertion and its supporting reason can vary.

The state where zinc's 3d orbitals are filled.

A type of fuel cell with 60-70% efficiency that does not cause pollution.

Batteries that maintain constant voltage during their lifespan.

A situation where the stability of a carbocation is increased due to electron delocalization.

The energy difference between d-orbitals in coordination compounds.

A principle used to calculate molar conductivity of weak electrolytes at infinite dilution.

Cannot be determined experimentally due to its weakness as an acid.

Substances like KCl or KNO3 used to maintain electrical neutrality in electrochemical cells.

A reaction where the rate does not depend on the concentration of reactants.

Presence of a nitro group increases haloarenes' reactivity in nucleophilic substitution.

A decrease in the freezing point of a solution when solutes like NaCl are added to water.

The time required for the concentration of a reactant to reduce to half, independent of the initial concentration.

A substance added to water to lower its freezing point due to its ability to form hydrogen bonds.

Actual magnetic moment values are less than the predicted values due to electron interactions.

An electron withdrawing group that influences the properties of attached compounds.

Both can either be true, indicating that one explains the other or not.

The extent to which a weak electrolyte dissociates into ions.

Weak electrolytes improve ion mobility upon dilution.

Has partial double bond character due to resonance.

Can occur without Lewis acid due to -OH group's influence.

Decreases with increased branching of the carbon chain.

Weak attractions between molecules affecting boiling points.

Determined experimentally by the rate of reaction.

The number of reactant particles involved in an elementary reaction.

A reaction where an electron-rich species forms a bond with an electron-poor species.

The ability of ions to move freely in a solution.

Reacts differently based on the nature of substituted groups.

A single bond exhibiting some properties of a double bond due to resonance.

Alters reactivity of adjacent aromatic compounds.

During the discharge, both Pb and PbO are involved.

Molarity changes with temperature due to volume change.

Mohr's salt dissociates into NH4+, Fe2+, and SO42- ions in water.

[Ti(H2O)6]3+ is colored; [Sc(H2O)6]3+ is not due to d-d transition absence.

[Mn(CN)6]3− has d2sp3 hybridization; [MnCl6]3− has sp3d2 hybridization.

Λm increases sharply for weak electrolytes when diluted as dissociation increases.

Solvent moves from pure solvent side to solution side due to diffusion.

Anions left after α-hydrogen removal are stabilized by inductive effects.

High ionization energy of Cu is balanced by negative hydration energy of Cu²⁺.

In aniline, the nitrogen's lone pair can be protonated in presence of AlCl3.