In modified atmosphere packaging (MAP) for meat and fish, which gases are used to maintain color and inhibit spoilage?

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#Question id: 20205

#XL - P Chemistry

The orbital diagram in which Aufbau principle is violated is

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#Question id: 20206

#XL - P Chemistry

If the speed of electron in Bohr first orbit of hydrogen atom be x, then speed of the electron in 3rd orbit is

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#Question id: 20207

#XL - P Chemistry

If wavelength of photon is 2·2 × 10 ^{– 11}m, h = 6·6 × 10^–34 Js, then momentum of photon is

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#Question id: 20208

#XL - P Chemistry

The wave number of first line of Balmer series of hydrogen is 15200 cm^–1. The wave number of the first Balmer line of Li¹⁺ ion is

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#Question id: 20209

#XL - P Chemistry

Which of the following is violation of Pauli’s exclusion principle ?

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#Question id: 20210

#XL - P Chemistry

The electrons, identified by quantum number n and (i) n = 4, = 1 (ii) n = 4, = 0 (iii) n = 3, = 2 (iv) n = 3, = 1 can be placed in order of increasing energy, from the lowest to

highest, as