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Discuss the aromatic nucleophilic substitutions reaction of chlorobenzene.
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Write a short note on raschig process.
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Write a short note on Darzen’s process.
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Assertion: Two mole of glucose contains 12.044 × 1023 molecules of glucose
Reason: Total number of entities present in one mole of any substance is equal to 6.02 × 1022
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The number of water molecules in a drop of water weighing 0.018 g is
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What is the empirical formula of the following?
Fructose (C6H12O6) found in honey.
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What is the empirical formula of the following?
Caffeine (C8H10N4O2) a substance found in tea and coffee.
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Calculate the empirical and molecular formula of a compound containing 76.6% carbon, 6.38% hydrogen and rest oxygen its vapour density is 47.
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A Compound on analysis gave Na = 14.31% S = 9.97% H = 6.22% and O = 69.5% calculate the molecular formula of the compound if all the hydrogen in the compound is present in combination with oxygen as water of crystallization. (molecular mass of the compound is 322).
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The equilibrium constant for a reaction at room temperature is K1 and that at 700 K is K2 If K1 > K2, then
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The formation of ammonia from N2(g) and H2(g) is a reversible reaction
\[\ce{N2(g) + 3H2(g) <=> 2NH3(g) + Heat}\]
What is the effect of increase of temperature on this equilibrium reaction.
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Solubility of carbon dioxide gas in cold water can be increased by ______.
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Electronic configuration of species M2+ is 1s2 2s2 2p6 3s2 3p6 3d6 and its atomic weight is 56. The number of neutrons in the nucleus of species M is
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Assertion: The spectrum of He+ is expected to be similar to that of hydrogen.
Reason: He+ is also one electron system.
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The electronic configuration of Eu (Atomic no. 63) Gd (Atomic no. 64) and Tb (Atomic no. 65) are:
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The maximum number of electrons in a sub shell is given by the expression
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If n = 6, the correct sequence for filling of electrons will be,
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How many electrons in an atom with atomic number 105 can have (n + 1) = 8?
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The energy of an electron in the 3rd orbit of hydrogen atom is –E. The energy of an electron in the first orbit will be
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Consider the following electronic arrangements for the d5 configuration.
| ⥮ | ⥮ | 1 | ||
| (a) | ||||
| 1 | 1 | 1 | ⥮ | |
| (b) | ||||
| 1 | 1 | 1 | 1 | 1 |
| (c) | ||||
- which of these represents the ground state.
- which configuration has the maximum exchange energy.
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