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The spin magnetic momentum of electrons in an ion is 4.84 BM. Its total spin will be

Common Data Question:

In a simple Bryaton cycle, the pressure ratio is $8$ and temperature at the entrance of compressor and turbine are $300K$ and $1400K$ respectively. Both compressor and gas turbine have isentropic efficiencies equal to $80$%. or the gas, assume a constant value of $c_p$ (specific heat at constant pressure) equal to $1kJ/kgK$ and ratio of specific heats as $14$. Neglect changes in kinetic and potential energies



The thermal eficiency of the cycle in percentage % is

The decreasing order of boiling points of the following alcohols is?

The mole fraction of ethanol in water is 0.08. Its molality is:

Of the following, which compound is an acetal?

A given nitrogen containing aromatic compound $A$ reacts with $Sn/HCl$, followed by $HN{O}_2$ to give an unstable $B$. $B$ on treatment with phenol, forms a beautiful coloured compound $C$ with the molecular formula $C_{12}{H}_{10}{N}_{2}O$. The structure of compound $A$ is:

The increasing order for the magnitude of $e/m$ (charge/mass) for an electron (e), a proton (p) and a neutron (n) respectively is:

An aromatic compounds among other things should have a $(4n+2)$ $\pi -$ electron cloud containing $(4n+2)$electrons, where $n$ can't be :

Planar structure is shown by:

In hydrogen atom,the de Broglie wavelength of an electron in the second Bohr's orbit is ? Given that Bohr radius $a_0=52.9pm$

The correct order of the $1^{st}$ electron affinities of $N,O,F,S$ and $Cl$ is:

Complete the following reactions with appropriate structures of products/reagents:



From the options, choose one that can replace the question marks in the above scheme.

Only major products can be considered.

How many of the given oxides show acidic property?

$N{a}_{2}O,K_{2}O,S{O}_2,S{O}_3,C{O}_2,ZnO,A{l}_2{O}_3$

The nucleophilic addition at the carbonyl carbon changes its hybridization fromto

Which of the following is the true structure of $H_2{O}_2$?

Compounds which give different ions in solution although they have same composition are called:

Element ‘X’ crystallizes in a 12 coordination FCC lattice, on applying high temperature, it changes to 8 coordination bcc lattice. The ratio of the density of the crystal lattice before and after applying high temperature will be :

Product on monobromination of this compound is

$\left[Fe\right(CN{)}_6{]}^{4-}$ and $\left[Fe\right(H_{2}O{)}_6{]}^{2+}$ are of different colours in dilute solutions. Why?

Predict the number of
unpaired electrons in the square planar [Pt(CN)₄]²⁻
ion.