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Science (English Medium) Class 12 - CBSE Question Bank Solutions

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Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halide:

\[\ce{CH3C(C2H5)2CH2Br}\]

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

Name the following halide according to IUPAC system and classify as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides: 

\[\ce{CH3C(C2H5)2CH2Br}\]

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

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Write the structure of the following organic halogen compound.

4-tert-Butyl-3-iodoheptane

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

Draw the structure of major monohalo products in the following reaction:

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

Write the structure of the following organic halogen compound.

4-tert-Butyl-3-iodoheptane

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

Name the following halide according to IUPAC system and classify them as alkyl, allyl, benzyl (primary, secondary, tertiary), vinyl or aryl halides:

\[\ce{CH3C(C2H5)2CH2Br}\]

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

What are monosaccharides?

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

The major binding force in diamond is_______________ .

(a) Covalent bond                                                  

(b)  Ionic bond

(c) Metallic bond                                                   

(d)  Co-ordinate covalent bond

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

What is the covalency of nitrogen in N2O5?

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

Give an example each of a molecular solid and an ionic solid.

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

Calculate E°cell for the following reaction at 298 K:

2Al(s) + 3Cu+2(0.01M) → 2Al+3(0.01M) + 3Cu(s)

Given: Ecell = 1.98V

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

Calculate emf of the following cell at 25°C:

\[\ce{Sn/Sn^2+ (0.001 M) || H+ (0.01 M) | H2_{(g)} (1 bar) | Pt_{(s)}}\]

Given: \[\ce{E^\circ(Sn^2+/sn) = -0.14 V, E^\circ H+/H2 = 0.00 V (log 10 = 1)}\]

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

Calculate e.m.f of the following cell at 298 K:

2Cr(s) + 3Fe2+ (0.1M) → 2Cr3+ (0.01M) + 3 Fe(s)

Given: E°(Cr3+ | Cr) = – 0.74 VE° (Fe2+ | Fe) = – 0.44 V

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

Write the name of two monosaccharides obtained on hydrolysis of lactose sugar.

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

Calculate emf of the following cell at 25 °C :

Fe|Fe2+(0.001 M)| |H+(0.01 M)|H2(g) (1 bar)|Pt (s)

E°(Fe2+| Fe)0.44 V E°(H+ | H20.00 V

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

Write the IUPAC name of the given compound:

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

Write the names and structures of the monomers of the following polymers: Polyvinyl chloride

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

Write the product obtained when D-glucose reacts with H2N − OH.

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

Calculate e.m.f. and ∆G for the following cell:

Mg (s) |Mg2+ (0.001M) || Cu2+ (0.0001M) | Cu (s)

`"Given :" E_((Mg^(2+)"/"Mg))^0=−2.37 V, E_((Cu^(2+)"/"Cu))^0=+0.34 V.`

 

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

Arrange the following in the increasing order of their boiling points : C2H5OH, CH3 − CHO, CH3 − COOH

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