List of top Chemistry Questions asked in NEET (UG)

Match List I with List II:

Choose the correct answer from the options given below:

The correct order of the wavelength of light absorbed by the following complexes is:
A. $[ \text{Co(NH}_3\text{)}_6]^{3+}$
B. $[ \text{Co(CN)}_6]^{3-}$
C. $[ \text{Cu(H}_2\text{O)}_4]^{2+}$
D. $[ \text{Ti(H}_2\text{O)}_6]^{3+}$
Choose the correct answer from the options given below:

The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes n = 2 $\rightarrow$ n = 3 and n = 4 $\rightarrow$ n = 6 transitions, respectively, is:

Match List I with List II:

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Higher yield of NO in the reaction
N$_2$ (g) + O$_2$ (g) $\rightarrow$ 2NO (g)
can be obtained at [$\Delta H$ of the reaction = +180.7 kJ mol$^{-1}$]

Which of the following aqueous solutions will exhibit the highest boiling point?

If the half-life ($t_{1/2}$) for a first-order reaction is 1 minute, then the time required for 99.9% completion of the reaction is closest to:

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).
Assertion (A): I$^-$ undergoes SN$_2$ reaction faster than Cl$^-$.
Reason (R): Iodine is a better leaving group because of its large size.
In the light of the above statements, choose the correct answer from the options given below:

Energy and radius of first Bohr orbit of He$^+$ and Li$^2+$ are:
Given: $ R_H = 2.18 \times 10^{-18} \, \text{J}, a_0 = 52.9 \, \text{pm} $

Match List I with List II:
$Wacker oxidation & & II. PdCl\textsubscript{2} C. Wilkinson catalys$
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The standard heat of formation, in kcal/mol, of $Ba^{2+}$ is:
Given: Standard heat of formation of SO₄²⁻(aq) = -216 kcal/mol, standard heat of crystallization of BaSO₄(s) = -4.5 kcal/mol, standard heat of formation of BaSO₄(s) = -349 kcal/mol.

Match List I with List II:

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Dalton’s Atomic Theory could not explain which of the following?

Phosphoric acid ionizes in three steps with their ionization constant values $ K_1 $, $ K_2 $, and $ K_3 $, respectively, while $ K $ is the overall ionization constant.
Which of the following statements are true?

Which one of the following reactions does NOT give benzene as the product?

Out of the following complex compounds, which of the compound will be having the minimum conductance in solution?

Match List I with List II:
List I (Name of Vitamin)

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Which one of the following reactions does NOT belong to “Lassaigne's test”?

If the molar conductivity ($\Lambda_m$) of a 0.050 mol $L^{–1}$ solution of a monobasic weak acid is 90 S $cm^{2} mol^{–1}$, its extent (degree) of dissociation will be:
[Assume: $\Lambda^0$ = 349.6 S $cm^{2} mol^{–1}$ and $\Lambda^0_{\text{acid}}$ = 50.4 S$ cm^{2} mol^{–1}$]

Given below are two statements:
Statement I: Ferromagnetism is considered as an extreme form of paramagnetism.
Statement II: The number of unpaired electrons in a $Cr^{2+}$ ion (Z = 24) is the same as that of a $Nd^{3+}$ ion (Z = 60).
In the light of the above statements, choose the correct answer from the options given below:

Match List-I with List-II :

List - I(Block/group in periodic table)	List - II(Element)
(A) Lanthanoid	(I) Ce
(B) d-block element	(II) As
(C) p-block element	(III) Cs
(D) s-block element	(IV) Mn

Identify the correct answer from the options given below :

1 gram of sodium hydroxide was treated with 25 ml. of 0.75 M HCI solution, the mass of sodium hydroxide left unreacted is equal to :

The decreasing order of atomic radii (pm) of $ \text{Li}, \, \text{Be}, \, \text{B}, \, \text{C} $ is:

Baeyer’s reagent is :

Which of the following molecules has "NON ZERO" dipole moment value?