RE-NEET Chemistry Class 11 Questions
50 questions
In Geiger-Marsden experiment, the number of scattered α-particles N(θ) is plotted as a function of scattering angle θ. Which of the following options represents the correct plot?
Consider that an electron is revolving in an excited state of Hydrogen atom with velocity √25.6 ×10⁵ ms⁻¹. The radius of the orbit is x×10⁻⁹ m. The value of x is: [Take the mass of electron to be 9×10⁻³¹ kg, charge of electron = −1.6×10⁻¹⁹ C and 1/4πε₀ = 9×10⁹ N m² C⁻²]
Match the species in List I with their geometry in List II.
The amino acid that gives a red-blood colour on treating its sodium fusion extract with sodium nitroprusside is
Given below are two statements:
Statement-I: Oxidation of p-nitrotoluene with acidic KMnO₄ gives an acid that is stronger than benzoic acid.
Statement-II: Reduction of p-nitrotoluene with Sn/HCl followed by neutralization gives an amine that is more basic than aniline.
In light of the above statements, choose the most appropriate answer from the options given below.
The compound that CANNOT be obtained from the aldol condensation reaction shown below, is
Given below are two statements: One is labelled as Assertion A and the other is labelled as Reason R. Assertion A: The first ionization enthalpy of O is lower than that of N and F. Reason R: The loss of an electron from O leads to stable half-filled p orbital. In light of the above statements, choose the most appropriate answer from the options given below:
For the following reaction sequence, choose the correct option
Arrange the following compounds in the increasing order of polarity
A. CH₃CH₂OCH₂CH₃
B. CH₃CH₂OH
C. CH₃COCH₃
D. CH₃COOH Choose the correct answer from the options given below.
Given below are two statements:
Statement-I: Heating NaCl with concentrated H₂SO₄ and MnO₂ results in oxidation of Mn.
Statement-II: Heating NaI with concentrated H₂SO₄ and MnO₂ results in reduction of Mn. In light of the above statements,
choose the most appropriate answer from the options given below:
Given below are two statements:
Statement I: trans-But-2-ene upon treatment with Br₂ in CCl₄ gives the following product.
Statement II: cis-But-2-ene upon treatment with alkaline KMnO₄ gives the following product.
The highest occupied molecular orbital for Ne₂ is
The following carbocation is stabilized by the interaction of the empty p orbital with
The correct statement is
Consider the following schematic plots of orbital wavefunction (ψr) against distance (r) from the nucleus. The figure representing two radial nodes in the orbital is
In an acidic medium, 10 mL of 0.25 M oxalic acid is titrated with KMnO₄ solution. If the volume of KMnO₄ solution required to reach end point is 10 mL, the strength of the KMnO₄ solution is
The correct decreasing order of oxidation state of the underlined atom in each molecule is
Consider the following reaction, and choose the correct option.
Among the following, the compound having conjugated double bonds is
One of the products formed in the following reaction is
Among the following options, the correct trend in the electron gain enthalpy is
Consider the following reaction sequences and choose the correct option.
The amount of carbon dioxide evolved upon complete combustion of 116 g of n-butane is (Given: atomic mass in amu H=1, C=12 and O=16)
The numbers 17.0145 and 21.0235 were rounded to three figures after the decimal point. The resulting numbers, respectively, are
The spectral series which corresponds to the electronic transition from the levels n₂ = 5, 6,... to the level n₁ = 4 is
Some energy levels of a molecule are shown in the figure with their wavelengths of transitions. Then:
The correct decreasing order of atomic radii (pm) of Li, Be, B and C is
Baeyer's reagent is:
Which of the following molecules has "NON ZERO" dipole moment value?
The major product X formed in the following reaction sequence is:
Match List-I with List-II:
At a given temperature and pressure, the equilibrium constant values for the equilibria are given below: 3A₂ + B₂ ⇌ 2A₃B, K₁ A₃B ⇌ 3/2 A₂ + 1/2 B₂, K₂ The relation between K₁ and K₂ is :
Identify the incorrect statement about PCl₅.
The correct IUPAC name of the compound is:
Select the incorrect reaction among the following:
For the reaction in equilibrium N₂(g) + 3H₂(g) ⇌ 2NH₃(g), ΔH = -Q. Reaction is favoured in forward direction by:
The major product D formed in the following reaction sequence is: CH₃OH → A → B → C → D (major)
Match List-I with List-II:
The quantum numbers of four electrons are given below:
I. n = 4; l = 2; m₁ = -2; s = -½ II. n = 3; l = 2; m₁ = 1; s = +½ III. n = 4; l = 1; m₁ = 0; s = +½ IV. n = 3; l = 1; m₁ = -1; s = +½
The correct decreasing order of energy of these electrons is
The major product C in the below mentioned reaction is:
CH₃CH₂CH₂Br →[alc. KOH, Δ] A →[HBr] B →[aq. KOH, Δ] C
1.0 g of H₂ has same number of molecules as in:
A steam volatile organic compound which is immiscible with water has a boiling point of 250°C. During steam distillation, a mixture of this organic compound and water will boil:
Q
Given below are two statements:
Statement I: The Balmer spectral line for H atom with lowest energy is located at . (R_H = Rydberg constant)
Statement II: When the temperature of blackbody increases, the maxima of the curve (intensity of wavelength) shifts to shorter wavelength.
In the light of the above statements, choose the correct answer from the options given below:
Identify the incorrect statement.
Match List-I with List-II:
The ratio of solubility of AgCl in 0.1 M KCl solution to the solubility of AgCl in water is: (Given : Solubility product of AgCl = 10⁻¹⁰)
On complete combustion, 0.3 g of an organic compound gave 0.2 g of CO₂ and 0.1 g of H₂O. The percentage composition of carbon and hydrogen in the compound, respectively is:
For the following reaction at 300 K A₂(g) + 3B₂(g) → 2AB₃(g) the enthalpy change is +15 kJ, then the internal energy change is:
Methyl group attached to a positively charged carbon atom stabilizes the carbocation due to