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Chemistry Class 12th

Which of the following is 'a' FALSE statement?

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Payal Gupta

Contributor-Level 10

Option (A) is false statement because estimation of nitrogen in an organic compound is done by Kjeldahl's method.

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Chemistry Class 12th

Compound A used as a strong oxidizing agent is amphoteric in nature. It is the part of lead storage batteries. Compound A is

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Payal Gupta

Contributor-Level 10

PbO₂ is used is lead storage battery and is amphoteric as strong oxidizing agent since Pb (II) is more stable than Pb (IV).

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Chemistry Class 12th

Find A, B and C in the following reactions:

NH₃ + A + CO₂ → (NH₄)₂ CO₃

(NH₄)₂ CO₃ + H₂O + B → NH₄ HCO₃

NH₄HCO₃ + NaCl → NH₄Cl + C

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Payal Gupta

Contributor-Level 10

$N H_{3} + \underset{A}{H_{2} O} + C O_{2} \to {(N H_{4})}_{2} C O_{3}$

${(N H_{4})}_{2} C O_{3} + H_{2} O + \underset{B}{C O_{2}} \to N H_{4} H C O_{3}$

$N H_{4} H C O_{3} + N a C l \to N H_{4} C l + \underset{C}{N a H C O_{3}}$

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Chemistry Class 12th

Find A, B and C in the following reactions:

NH₃ + A + CO₂ → (NH₄)₂ CO₃

(NH₄)₂ CO₃ + H₂O + B → NH₄ HCO₃

NH₄HCO₃ + NaCl → NH₄Cl + C

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Chemistry Structure of Atom

The orbital having two radial as well as two angular nodes is

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Payal Gupta

Contributor-Level 10

Radial node = n $l -$ 1 (5d)

= 5 – 2 – 1 = 2

Angular node = $l$

= 2

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Chemistry Class 12th

For the given reaction

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Payal Gupta

Contributor-Level 10

Refer to the image below

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Chemistry Class 12th

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Payal Gupta

Contributor-Level 10

Kindly refer to below image

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Chemistry Class 12th

An amine on reaction with benzenesulphonyl chloride produces a compound insoluble in alkaline solution. This amine can be prepared by ammonolysis of ethyl chloride. The correct structure of amine is

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Payal Gupta

Contributor-Level 10

Hinsberg test for amines

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Chemistry Class 11th

Which of the following vitamin is helpful is delaying the blood clotting?

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Payal Gupta

Contributor-Level 10

Vitamin E is helpful in delaying blood clotting while vitamin K help blood clotting.

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Chemistry Class 12th

Given below are two statements:

Statement I : A mixture of chloroform and aniline can be separated by simple distillation.

Statement II : When separating aniline from a mixture of aniline and water by steam distillation aniline boils below its boiling point.

In the light of the above statements, choose the most appropriate answer from the options given below:

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Payal Gupta

Contributor-Level 10

Boiling points of chloroform is 334 K and aniline is 457 K. Here difference in b. pt is more so they can be separated by simple distillation.

Aniline is insoluble (immiscible in water), the mixture of insoluble substance in water boils close to but below 373 K. so, aniline boils below its b.pt

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