List of top Chemistry Questions

Assign the R and S configuration to the following molecule.

Quest problem

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Which one is not an electrophile?

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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The Lanthanide contraction from Ce to Lu is

Match List I with List II

List I (Ions)	List II (Magnetic moment (BM))
A. Co²⁺	I. 1.73
B. Mn²⁺	II. 3.87
C. Cr²⁺	III. 4.90
D. Cu²⁺	IV. 5.92

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Cytochrome C is a/an

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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Arrange the following compounds A, B, C, and D in decreasing order of acidic strength:

Ques Fig

Ques Fig 2

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Match List I with List II:

List I (Formula)	List II (Structure)
A. XeO₄	I. Pyramidal
B. XeO₂F₂	II. Tetrahedral
C. XeF₄	III. Trigonal bipyramidal
D. XeO₃	IV. Square planar

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Which one of the following is the weakest base?

Match List I with List II:

Table Fig

What is the EAN of [Co(NH₃)₆]³⁺?

What are ‘X’ and 'Y' respectively in the following reactions?

The effects that aspirin can produce in the body are:

The reagent 'X' used in the following reaction to obtain a good yield of the product is:

The \( C-O-H \) bond angle in A is \( X \) and \( C-O-C \) bond angle in B is \( Y \). What are X and Y?

IUPAC name of the following compound is:

The bromides formed by the cleavage of ethers A and B with HBr respectively are:

What are X and Y respectively in the following reactions?

Oxidation state of each Cl in CaOCl is/are

Which of these will not be oxidized by ozone?

Calculate the wavelength (in nanometer) associated with a proton moving at \(1.0 \times 10^3 \, \text{m/s}\)
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The probability of finding the electron in the px orbital is
(A). Zero at the nucleus
(B). Maximum on two opposite sides of the nucleus along the X-axis
(C). Zero on the Z-axis
(D). Same on all sides around the nucleus
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Stability of the species Li, Li\(_2\), and Li\(_2^+\) increases in the order of:

The compound(s) with two lone pairs of electrons on the central atom is/are

(A). BrF₅
(B). ClF₃
(C). XeF₄
(D). SF₄

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