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Chemistry Chemistry Organic Chemistry

Which one of the following reactions does not occur?

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alok kumar singh

Contributor-Level 10

Aniline being a base does not give Friedel Craft reaction because it react with AlCl₃ used in Friedel Craft reaction.

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Chemistry Class 12th

Thiamine and pyridoxine are also known respectively as:

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alok kumar singh

Contributor-Level 10

Vitamin B₁ is thiamine while vitamin B₆ is pyridoxine

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Chemistry Class 12th

Which one of the following group – 15 hydride is the strongest reducing agent?

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alok kumar singh

Contributor-Level 10

Reducing power for group-15 hydrides increases down the group, so BiH₃ is the strongest reducing agent.

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Chemistry Class 11th

Match List – I with List – II:

List – I List – II

(Elements)

...more

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alok kumar singh

Contributor-Level 10

Ba has outer electronic configuration 6s².

CaC₂O₄ is insoluble in water.

Compound of Li are covalent so soluble in organic solvent.

Na forms strong monoacidic base.

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Chemistry Chemistry Organic Chemistry

Major Product

In the chemical reactions given above A and B respectively are:

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alok kumar singh

Contributor-Level 10

So; A is H₃PO₂ & B is CH₃ – CH₂ – Cl

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Chemistry Class 12th

Sulphide ion is soft base and its ores are common for metals.

(A) Pb (B) Al (C) Ag (D) Mg

Choose the correct answer from the options given below:

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alok kumar singh

Contributor-Level 10

Sulphide ion (s²^-) form ores commonly with Pb & Ag as PbS and Ag₂S

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10 months ago

Chemistry Chemistry Organic Chemistry

Which one of the following molecules does not show stereo isomerism?

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alok kumar singh

Contributor-Level 10

3-Ethylhex-3-ene will not show stereo isomerism

Methylhex-1-ene will show steroisomerism (optical isomerism)

4-Methylhex-1-ene will show stereoisomerism (optical) since it has one chiral carbon

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10 months ago

Chemistry Class 12th

Match List – I with List – II:

Choose the correct answer from the options given below:

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alok kumar singh

Contributor-Level 10

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10 months ago

Chemistry Chemistry Chemical Bonding and Molecular Structure

Given below are the statements about diborane.

(A) Diborane is prepared by the oxidation of NaBH₄ With I₂.

(B) Each boron atom is in sp³ hybridized state.

(C) Diborane has one bridged 3 centre – 2 - electron bond.

(D) Diborane is a planar molecule.

The option with correct statement(s) is:

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alok kumar singh

Contributor-Level 10

$2 N a B H_{4} + l_{2} \to 2 N a l + H_{2} + B_{2} H_{6}$

Diborane is produced when NaBH₄ is reacted with I₂

Both boron atoms are sp³ hybridised & molecule is non-planar. Diborane as two bridged 3 centre-2-electron bonds.

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Chemistry Class 12th

An organic compound A (C₆H₆O) gives dark green colouration with ferric chloride. On treatment with CHCl₃ and KOH, followed by acidification gives compound B. Compound B can also be obtained from compound C on reaction with pyridinium chlorochromate (PCC). Identify A, B and C.