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Which of the following is most soluble in water?
In which of the following reactions, aldehydes and ketones are distinguished?
which of the following hybridisation occurs in the formation of methane molecule?
Which of the following statements in relation to the hydrogen atom is correct?
Which of the following explains the sequence of filling electrons in different subshells?
The number of atoms contained in 11.2 L of SO₂ at S.T.P. are
The units nanometer, fermi, angstrom and attometre arranged in decreasing order
A carboxylic acid is converted into its anhydride using
Which chloride should exhibit the most covalent type of bond?
A vessel at equilibrium, contains SO₃, SO₂ and O₂. Now some helium gas is added, so that total pressure increases while temperature and volume remain constant. According to Le-Chatelier's principle, the dissociation of SO₃
The order of a reaction of a radioactive decay is
The correct order of electron affinity among the following is
The electron affinity of fluorine is unexpectedly less than that of Cl. Because the size of F atom is quite small, as a result, the electron-electron repulsions in the relatively compact 2p-subshell are comparitively large and hence, the incoming electron is not accepted with the same ease as in the case with Cl.
Which of the following is a common donor atom in ligands ?
Which of the following characteristics of the transition metals is associated with their catalytic activity?
The mass of carbon anode consumed (giving only carbon dioxide) in the production of 270 kg of aluminium from bauxite by Hall process is (Atomic weight of AI = 27)
Which one of the following alkenes will react faster with H₂ catalytic hydrogenation conditions ?
Which of the following compound is used to prevent the deposition of oxides of lead on spark plug, combustion chamber and exhaust pipe?
In which of the following acid-base titration pH is greater than8 at the equivalence point ?
If for a given substance, melting point is TB and freezing point is TA then which of following graph gives correct variation of entropy change vs temperature?
The total number of acyclic isomers including stereoisomers of C₄H₇Cl are
The element with atomic no. 36 belongs to which of the following block in the Periodic Table?
Which of the following is the strongest oxidising agent?
When potassium ferrocyanide crystals are heated with conc. H₂SO₄, the gas evolved is
Fires that result from the combustion of alkali metals can be extinguished by
In certain matters, lithium differs from other alkali metals, the main reason for this is
When the product of pressure and volume is plotted against pressure for a given amount of gas, the line obtained is
Hydrogen evolved at STP on complete reaction of 27 g of aluminium with excess of aqueous NaOH would be
The separation of colloidal particles from those of molecular dimensions is called