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MAH-MHT CET (PCM/PCB) entrance exam Question Bank Solutions

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In the reaction,

\[\ce{MnO^{-1}_4 (aq) + Br^{-1}(aq) -> MnO2(s) + BrO^{-1}_3(aq)}\]

the correct change in oxidation number of the species involved is ______.

[4] Redox Reactions
Chapter: [4] Redox Reactions
Concept: undefined >> undefined

Which among the following pairs of compounds is not isomorphous?

[11] Solid State
Chapter: [11] Solid State
Concept: undefined >> undefined

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The conductivity of an electrolytic solution decreases on dilution due to ______.

[15] Electrochemistry
Chapter: [15] Electrochemistry
Concept: undefined >> undefined

Which among the following is not a semi-synthetic polymer?

[25] Introduction to Polymer Chemistry
Chapter: [25] Introduction to Polymer Chemistry
Concept: undefined >> undefined

Which of the following alkaline earth metals has the least affinity towards oxygen?

[5] Elements of Group 1 and Group 2
Chapter: [5] Elements of Group 1 and Group 2
Concept: undefined >> undefined

Which of the following is NOT an example of redox reaction?

[4] Redox Reactions
Chapter: [4] Redox Reactions
Concept: undefined >> undefined

The bond line formula of 1-iodo-2, 3-dimethyl pentane is

[20] Halogen Derivatives
Chapter: [20] Halogen Derivatives
Concept: undefined >> undefined

When propene reacts with HCl in presence of peroxide, the product is ________.

[20] Halogen Derivatives
Chapter: [20] Halogen Derivatives
Concept: undefined >> undefined

Choose the RIGHT statement from the following:

[11] Solid State
Chapter: [11] Solid State
Concept: undefined >> undefined

Which of the following is radioactive?

[5] Elements of Group 1 and Group 2
Chapter: [5] Elements of Group 1 and Group 2
Concept: undefined >> undefined

Which of the following is an ambidentate ligand?

[19] Coordination Compounds
Chapter: [19] Coordination Compounds
Concept: undefined >> undefined

In the complex [Co(en)3]Cl3, ____________.

[4] Redox Reactions
Chapter: [4] Redox Reactions
Concept: undefined >> undefined

Dihalides of group 16 elements undergo ____________.

[17] Elements of Groups 16, 17, and 18
Chapter: [17] Elements of Groups 16, 17, and 18
Concept: undefined >> undefined

The first ionization enthalpies of alkali metals decreases down the group because of

[5] Elements of Group 1 and Group 2
Chapter: [5] Elements of Group 1 and Group 2
Concept: undefined >> undefined

In the following reaction, the oxidation number of Cr changes.

\[\ce{ClO^-_{( aq)} + Cr(OH)^-_{4(aq)} -> CrO^{2-}_{4(aq)} + Cl^-_{( aq)} (basic)}\]

[4] Redox Reactions
Chapter: [4] Redox Reactions
Concept: undefined >> undefined

Which of the following statements is INCORRECT?

[5] Elements of Group 1 and Group 2
Chapter: [5] Elements of Group 1 and Group 2
Concept: undefined >> undefined

Which of the following is a hydrogen bonded molecular solid?

[6] States of Matter: Gaseous and Liquid States
Chapter: [6] States of Matter: Gaseous and Liquid States
Concept: undefined >> undefined

Identify the strongest oxidising agent.

\[\ce{Na^+ + e^- -> Na}\]; E0 = −2.714 V

\[\ce{Pt^{2+} + 2e^- -> Pt}\]; E0 = +1.200 V

\[\ce{I2 + 2e^- -> 2I^-}\]; E0 = + 0.535 V

\[\ce{Co^{2+} + 2e^- -> Co}\]; 0 = −0.280 V

[4] Redox Reactions
Chapter: [4] Redox Reactions
Concept: undefined >> undefined

The oxidation number of sulphur in S8 molecule is ______.

[4] Redox Reactions
Chapter: [4] Redox Reactions
Concept: undefined >> undefined

Match the following.

Compound Oxidation no. of underlined element
i. \[\ce{\underline{C}_4H4O^{2-}_6}\] a. +2.5
ii. \[\ce{\underline{N}_3H}\] b. +1.5
iii. \[\ce{Mg2\underline{P}_2O7}\] c. +5
iv. \[\ce{Na2\underline{S}_4O6}\] d. `-1//3`
[4] Redox Reactions
Chapter: [4] Redox Reactions
Concept: undefined >> undefined
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