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Which of the following is correct order of first ionization potential? ...
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The geometry of Ni(CO)4 and Ni(PPh3)2Cl2 are ...
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Which of the following statements is incorrect about H2O2? ...
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Which one of the following would give methylamine when treated with acetamide? ...
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Product is CH3CH2COOH Red P+Br2 > ...
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ethyne dil. H2SO4/ HgSO4 >A NaOH >B B is ...
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Which of the following can easily distinguish between 1-butyne and 2-butyne ...
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Benzene reacts with n-propyl chloride in the presence of anhydrous AlCl3 to give ...
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propene reacts with HOCl to give ...
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The total number of isomers for C4H8 is ...
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The absolute configuration of the following compound is *Image* ...
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IUPAC name of *Image* ...
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When equal volumes of the following solutions are mixed, precipitation of AgCl(Ksp=1.8×10-10) will occur with ...
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The percentage decrease in vapour pressure of a water, when a solute is added to it, is 1.8%. molality of the solution is ...
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13Al27 is a stable isotope, 13Al29 is expected to disintegrate by ...
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1 gm of a radioactive element get reduced to 1/16 gm in 320 days. The time taken for 1 gm to reduced to 1/32 gm is ...
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One mole of non ideal gas undergoes change in state (3 Pa,5L,100K)→(5Pa,4L,200K) with the change in internal energy ΔU=50 mJ. The change in enthalpy is ...
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The coordination number of a metal crystallizing in a hexagonal close-packed structure is ...
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The values of Van der Waal's constant a for for the gases A, B, C and D are 1.50, 1.66, 3.98 and 2.60 respectively. The gas which can most easily be liquefied is ...
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2p orbital has ...
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The oxidation number of phosphorus in Ba(H2PO2)2 is ...
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Total energy of electron of hydrogen atom in ground state is -E, the potential energy of electron in first excited state is ...
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equilibrium constant of HA+H2O <===> A-+H3O+ is 2×10-5, then equilibrium constant for HA+OH- <===> A-+H2O is ...
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Two vessels of volume V and 3V contains two gases at 6 atm and 2 atm respectively. If the vessels are connected through a tube (negligible volume), what is the total pressure of gaseous mixture (assume no change in temperatur ...
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ΣΣ(r+s)(cr+cs+crcs) 0≤r ...
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Refer prev ques ...
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Refer Prev Ques ...
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Match for 90-93 Below given are the ratio of the terms for an electron of the helium ion in first excited state to that of hydrogen in ground state v is the velocity of electron, r is the radius of orbit and E is the energy o ...
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Refer Prev Ques ...