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Reducing sugars reduce ____________.

[10] Biomolecules
Chapter: [10] Biomolecules
Concept: undefined >> undefined

Glucose can’t be classified as ____________.

[10] Biomolecules
Chapter: [10] Biomolecules
Concept: undefined >> undefined

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Which of the following reagent cannot distinguish between glucose and fructose?

[10] Biomolecules
Chapter: [10] Biomolecules
Concept: undefined >> undefined

The pair of compounds in which both the compounds give the positive test with Tollen’s reagent is:

[10] Biomolecules
Chapter: [10] Biomolecules
Concept: undefined >> undefined

Ethers are ____________.

[7] Alcohols, Phenols and Ethers
Chapter: [7] Alcohols, Phenols and Ethers
Concept: undefined >> undefined

Which one of the following is non-crystalline or amorphous?

[1] Solid State
Chapter: [1] Solid State
Concept: undefined >> undefined

m-Xylene reacts with Br2 in presence of FeBr3, what are products formed:

[6] Haloalkanes and Haloarenes
Chapter: [6] Haloalkanes and Haloarenes
Concept: undefined >> undefined

Amorphous solids are ______.

[1] Solid State
Chapter: [1] Solid State
Concept: undefined >> undefined

O-hydroxy benzyl alcohol when reacted with PCl3 gives the product as ______. (IUPAC name)

[8] Aldehydes, Ketones and Carboxylic Acids
Chapter: [8] Aldehydes, Ketones and Carboxylic Acids
Concept: undefined >> undefined

Which of the following is true about the value of refractive index of quartz glass?

[1] Solid State
Chapter: [1] Solid State
Concept: undefined >> undefined

Amorphous solid can also be called:

(i) pseudo solids

(ii) true solids

(iii) supercooled liquids

(iv) supercooled solids

[1] Solid State
Chapter: [1] Solid State
Concept: undefined >> undefined

Which of the following features are not shown by quartz glass?

(i) This is a crystalline solid.

(ii) Refractive index is same in all the directions.

(iii) This has definite heat of fusion.

(iv) This is also called super cooled liquid.

[1] Solid State
Chapter: [1] Solid State
Concept: undefined >> undefined

Under which situations can an amorphous substance change to crystalline form?

[1] Solid State
Chapter: [1] Solid State
Concept: undefined >> undefined

Electrode potential for Mg electrode varies according to the equation

`E_(Mg^(2+)  |  Mg) = E_(Mg^(2+)  |  Mg)^Θ - 0.059/2 log  1/([Mg^(2+)])`. The graph of `E_(Mg^(2+)  |  Mg)` vs `log [Mg^(2+)]` is ______.

[2] Electrochemistry
Chapter: [2] Electrochemistry
Concept: undefined >> undefined

Which of the following statement is correct?

[2] Electrochemistry
Chapter: [2] Electrochemistry
Concept: undefined >> undefined

Which of the following statement is not correct about an inert electrode in a cell?

[2] Electrochemistry
Chapter: [2] Electrochemistry
Concept: undefined >> undefined

An electrochemical cell can behave like an electrolytic cell when ______.

[2] Electrochemistry
Chapter: [2] Electrochemistry
Concept: undefined >> undefined

Use the data given in below find out which option the order of reducing power is correct.

`"E"_("Cr"_2"O"_7^(2-)//"Cr"^(3+))^⊖`= 1.33 V `"E"_("Cl"_2//"Cl"^-)^⊖` = 1.36 V

`"E"_("MnO"_4^-//"Mn"^(2+))^⊖` = 1.51 V `"E"_("Cr"^(3+)//"Cr")^⊖` = - 0.74 V

[2] Electrochemistry
Chapter: [2] Electrochemistry
Concept: undefined >> undefined

Use the data given in below find out the most stable ion in its reduced form.

`"E"_("Cr"_2"O"_7^(2-)//"Cr"^(3+))^⊖`= 1.33 V `"E"_("Cl"_2//"Cl"^-)^⊖` = 1.36 V

`"E"_("MnO"_4^-//"Mn"^(2+))^⊖` = 1.51 V `"E"_("Cr"^(3+)//"Cr")^⊖` = - 0.74 V

[2] Electrochemistry
Chapter: [2] Electrochemistry
Concept: undefined >> undefined

Use the data given in below find out the most stable oxidised species.

`E^0 (Cr_2O_1^(2-))/(Cr_(3+))` = 1.33 V   `E^0 (Cl_2)/(Cl^-)` = 1.36 V

`E^0 (MnO_4^-)/(MN^(2+))` = 1.51 V   `E^0 (Cr^(3+))/(Cr)` = – 0.74 V

[2] Electrochemistry
Chapter: [2] Electrochemistry
Concept: undefined >> undefined
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CBSE Science (English Medium) कक्षा १२ Question Bank Solutions
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Question Bank Solutions for CBSE Science (English Medium) कक्षा १२ Hindi (Elective)
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