An organic compound 'X' on treatment with acidified K₂Cr₂O₇ gives a compound 'Y' which reacts with I₂ and sodium carbonate to form triodomethane. The compound 'X' could be
The order of reactivity of halogen acids for reaction with C₂H₅OH is
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As the nuclear charge increases from neon to calcium, the orbital energies
Which of the following element's outermost orbits last electron has magnetic quantum number m = 0?
The rate of forward reaction is two times that of the reverse reaction at a given temperature and identical concentration, K equilibrium is
Which of the followng acts to inhibit lutenizing hormone secretion?
Which of the following compounds on boiling with KMnO₄ and the subsequent acidification will not give benzoic acid ?
Which of the following salt can be produced by the reaction of CO and caustic soda ?
A gas bulb is filled with NO₂ gas and imersed in an ice bath at 0°C which becomes colourless after sometime. This colourless gas will be
After how many seconds, will the concentration of reactants be halved, if the rate constant is 1.155 x 10⁻3 s⁻1?
The I.P. of an element on going from left to right in a period
A graph plotted between log k versus 1/T for calculating activation energy is shown by
Bio-gas production is more useful as compared to the direct use of cow dung because
Detergents are prepared by the action of H₂SO₄ followed by neutralization by starting with
The voltage of a cell, whose half cells are given below is Mg++ + 2e- → E = -2.37V, Cu++ + 2e- → Cu(s) E = + 0.34V
The chemical composition 'slag' formed during smelting process in the extraction of copper, is
The standard reduction potentials at 25°C of Li⁺/Li, Ba2⁺/Ba, Na⁺/Na and Mg2⁺/Mg are -3.05, -2.73, -2.71 and -2.37 volt respectively. Which one of the following is the strongest oxidising agent?
Electronic configuration of calcium atom may be written as
Fractional distillation of coal-tar produces the following fractions. Phenol is the main component of which fraction?
Which one of the following substances is used in the laboratory for a fast drying of neutral gases?
A nuclide of an alkaline earth metal undergoes radioactive decay by the emission of α particles in succession. The Group of the Periodic Table, to which the resulting daughter element would belong, is
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