List of top Chemistry Questions

Which of the following molecules is aromatic?

What is the oxidation state of Pd in [Pd(OAc)2]?

Which of the following vibrational mode shows no IR absorption bands:

Consider the following statements with reference to Citral:
(A). Citral is a liquid which has a smell of lemon
(B). Oxidation of citral with alkaline permanganate followed by chromic acid gives acetone, oxalic, and laevulic acid
(C). It also forms oxime
(D). It shows two geometrical isomers: trans isomer known as neral and cis isomer known as geranial
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Give the structure of X and Y:

In the following reaction, identify the product A and B:

Which one is not an electrophile?

Identify the structure of the alkaloid having the following characteristics:
(A) It is a coca alkaloid having molecular formula \( \text{C}_9\text{H}_{11}\text{NO} \).
(B) As the free base, it rapidly racemizes. 
(C) Its reactions show the presence of a keto group and a tertiary nitrogen atom. 
(D) Synthesized by condensing \( \gamma \)-methylaminobutyraldehyde with ethylacetoacetate in buffered solution at pH 7.
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Identify the product in the following chemical reaction:

Iodoform reaction is given by:
(A). all methyl ketones with CH3CO group
(B). Acetaldehyde
(C). all secondary alcohols with CH3CH(OH) group
(D). all primary alcohols
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Assign the R and S configuration to the following molecule.
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Arrange the following carbonyl compounds in the decreasing order of their reactivity towards nucleophilic addition reaction:
(A) CH₃CHO
(B) HCHO
(C) Cl₃CCHO
(D) CH₃COCH₂CH₃
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Identify the product in the following chemical reaction:

What is the EAN of [Co(NH₃)₆]³⁺?

To arrange the following compounds in the order of basicity:

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Which of the following isomer of 1, 2-cyclohexanedicarboxylic acid forms an hydride on heating?

The correct order of the stability of different conformations of cyclohexane is:
(A). chair
(B). boat
(C). twist boat
(D). half chair
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The basic structural unit of silicates is:

Which of the following oxides is not expected to react with sodium hydroxide?

Number of distinct NMR signals observed in case of acetone and ethyl methyl ketone are:

Cytochrome C is a/an