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Among the following, the narrow spectrum antibiotic is :
Among the following, isoelectronic species are:
The cell reaction of an electrochemical cell is $Cu^{2+}(C_1) + Zn \rightarrow Cu + Zn^{2+}(C_2)$. The change in free energy will be the function of:
The measurement of the electron position is associated with an uncertainty in momentum which is equal to $1 \times 10^{-18} \text{ g cm s}^{-1}$. The uncertainty in velocity of the electron will be: (mass of an electron is $9 \times 10^{-28} \text{ g}$)
The $E^\circ$ value for the $Mn^{3+}/Mn^{2+}$ couple is more positive than that of $Cr^{3+}/Cr^{2+}$ or $Fe^{3+}/Fe^{2+}$ due to change of:
What is the maximum number of orbitals that can be identified with the following quantum numbers? n = 3, l = 1, m = 0
If the principal quantum number n=6, the correct sequence of filling of electrons will be:
Maximum number of electrons in a subshell with l = 3 and n = 4 is:
Which one of the following pairs is isostructural (i.e., having the same shape and hybridization)?
In hydrogen atom, what is the de Broglie wavelength of an electron in the second Bohr orbit? [Given that Bohr radius, $a_0 = 52.9$ pm]
The correct sequence of bond enthalpy of 'C—X' bond is :
$\alpha$-D-glucose and $\beta$-D-glucose are:
When glycerol is treated with an excess of HI, it produces:
In a typical fuel cell, the reactants (R) and products (P) are:
An increase in the concentration of the reactants of a reaction leads to change in
The product formed from the following reaction sequence is:
A cell reaction becomes spontaneous when:
When phenol is treated with CHCl₃ and NaOH, the product formed is:
Which of the following statement is correct for the stability of ions of ethyl alcohol and phenol:
Which of the following can be used as the halide component for Friedel-Crafts reaction?