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Which of the following will not be soluble in sodium carbonate solution?
While 2,4,6-trinitrophenol, benzoic acid and benzene sulphonic acid are soluble in NaHCO3.This reaction is possible in the forward direction if acid is more acidic than H2CO3.o-nitrophenol is less acidic than H2CO3.Hence, it is not soluble in sodium hydrogen carbonate.
Which of the following reactions is used for detecting presence of carbonyl group ?
Which of the following expressions gives the de-Broglie relationship?
The total number of electrons present in all the ρ-orbitals of bromine is
A compound possesses 8% sulphur by mass. The least molecular mass is
The compound with carbon uses only its sp3 hybrid orbitals for bond formation is
Which of the following gives maximum energy in metabolic process?
Which of the following is the strongest nucleophile?
A negatively charged nucleophile is always stronger than a neutral one
Among the following the bond with highest bond dissociation energy is
The enthalpy change (∆H) for neutralisation of 1 M HCl by caustic soda in dilute solutions at 298 K is
A and B are gaseous substances which react reversibly to give two gaseous substances C and D,accompanied by the liberation of heat.When the reaction reaches equilibrium,it is observed that Kp = Kc.The equilibrium cannot be disturbed by
The rate constant of first order reaction whose half life is 480 sec is
Which of the following elements has the lowest ionisation potential
The ionisation potential increases from O to F to Ne, because of increasing nuclear charge. The ionisation potential is highest for Ne because of its stable (ns2 np6) electronic configuration. But the ionisation potential of O is lower than N although the nuclear charge of O is higher. This is due to the extra-stability of exactly half-filled 2p-orbitals of N.
A system is said to be in thermodynamic equilibrium when it is in
The detergents which are most suitable for cleansing synthetic fibres, are
IUPAC name of Na₃[Co(NO₂)₆] is
The IUPAC name of Na3[Co(N02)6] is sodium hexanitro cobaltate (III).
Four successive members of the first row transition elements are listed below with their atomic no. Which of them is expected to have the highest third ionisation enthalpy?
Low spin complexes are generally formed by the elements of
Which of the following isomers will have the highest boiling point ?
When n-propyl iodide is heated with alcoholic KOH,one of the products is
The process of separation of racemix mixture into its constitutes is called
The solubility of AgI in NaI solution is less than that in pure water because
How many monochlorobutanes will be obtained on chlorination of n-butane?
Of the following which is paramagnetic and has three electron bond in its structure
In which one of the following compounds, the oxidation number of sulphur is the least
A metal X on heating in nitrogen gas gives Y, Y on treatment with H₂O gives a colourless gas which when passed through CuSO₄ soution gives a blue colour. Y is
What are the products formed when ammonia reacts with excess chlorine?
Glyptal polymer is obtained from glycol by reacting with
What are the products formed when Li2CO3 undergoes decomposition?
A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of
The normality of a solution of NaOH; 100 ml. of which contains 4 g of NaOH is
The second order Bragg diffraction of x-rays with λ = 1 Å from a set of parallel planes in a metal occurs at an angle of 60o. The distance between the scattering planes in the crystal is
When 10 g of 90% pure limestone is heated completely, the volume (in litres) of carbon dioxide liberated at STP is