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The number of d-electrons in Fe²⁺ (Z=26) is not equal to the number of electrons in which one of the following?
According to the Bohr Theory, which of the following transitions in the hydrogen atom will give rise to the least energetic photon?
Which one of the following does not exhibit the phenomenon of mutarotation?
In the Hydrogen atom, the energy of the first excited state is – 3.4 eV. Then find out the kinetic energy (K.E.) of the same orbit of the Hydrogen atom:
Which of the following is not a fat-soluble vitamin?
Which of the following is not permissible arrangement of electrons in an atom?
The electronic configurations of Eu (Atomic no. 63), Gd (Atomic no. 64) and Tb (Atomic no. 65) are:
A $0.66 \text{ kg}$ ball is moving with a speed of $100 \text{ m/s}$. The associated wavelength will be: ($h = 6.6 \times 10^{-34} \text{ Js}$)
The correct set of four quantum numbers for the valence electron of rubidium atom (Z = 37) is:
A particular station of All India Radio, New Delhi, broadcasts on a frequency of $1,368 \text{ kHz}$ (kilohertz). The wavelength of the electromagnetic radiation emitted by the transmitter is: [speed of light, $c = 3.0 \times 10^8 \text{ m s}^{-1}$]
Incorrect set of quantum numbers from the following is:
If the rate of the reaction is equal to the rate constant, the order of the reaction is:
A deficiency in which of the following vitamins leads to a decrease in red blood cell (RBC) production?
The energies E₁ and E₂ of two radiations are 25 eV and 50 eV respectively. The relation between their wavelengths i.e., λ₁ and λ₂ will be:
Given below are two statements: Statement I: The value of wave function, Ψ depends upon the coordinates of the electron in the atom. Statement II: The probability of finding an electron at a point within an atom is proportional to the orbital wave function. In light of the above statements, choose the correct answer from the options given below:
D-(+)-glucose reacts with hydroxylamine and yields an oxime. The structure of the oxime would be:
Match List-I with List-II: | List-I (IUPAC official name) | List-II (IUPAC Symbol) | | :--- | :--- | | A. Mendelevium | I. Mt | | B. Meitnerium | II. Mc | | C. Moscovium | III. No | | D. Nobelium | IV. Md |
Sucrose on hydrolysis gives:
An alkene "A" on reaction with $O_3$ and $Zn-H_2O$ gives propanone and ethanal in equimolar ratio. Addition of $HCl$ to alkene "A" gives "B" as the major product. The structure of product "B" is:
Match List-I with List-II: **List-I (Test)** (a) Carbylamine test (b) Baeyer's test (c) Iodoform test (d) Phthalein dye test **List-II (Compound)** (i) Phenol (ii) Acetone (iii) Ethylene (iv) Aniline Choose the correct answer from the options given below: