The number of C - C sigma bonds present in 1-butyne is
Which one of the following will have the maximum dipole moment
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The energy of second Bohr orbit of hydrogen atom is -328 kJ mol-1, hence energy of fourth Bohr orbit would be
Which of the following contains an unpaired electron?
The salt used for performing 'bead' test in qualitative inorganic analysis is
The first emission line in the atomic spectrum of hydrogen in the Balmer series appears at
The configuration of X is 1s2 2s2 2p6 3s2 3p6 3d10 4s2 4p3. Its properties are similar to
The bromination of benzene in presence of FeBr3 is an example of
A molecule in which sp2 hybrid orbitals are used by the central atom in forming covalent bonds is
The energy librated per mole of H+ ion by neutralisation of strong acid and strong base :
Cu2+ reacts with Fe2+ ions according to the reaction Cu2++ Fe2+ ⇌ Cu+ + Fe3+. AT equilibrium the concentration of Cu2+ is not affected by the addition of
The molar heat capacity of water at constant pressure is 75 J-K-1-mol-1. When 1.0 KJ of heat is supplied to 100 g of water, then increase in the temperature of water is
What will be the order of the reaction if doubling of the concentration of a reactant increases the rate by a factor of 4 and tripling the concentration of the reactant by a factor of 9?
Which of the following is true for an isochoric processes
Identify the correct order in which the covalent radius of the following elements increases.
I) Ti
II) Ca
III) Sc
On passing 0.1 faraday of electricity through fused sodium chloride ,the amount of chlorine liberated is (At.mass of Cl = 35.45)
How many litres of O2 at STP are needed to complete the combustion of 39 g of liquid benzene as per equation given below ? 2C6H6(l)+15O2(g)→12CO2(g)+6H2O(g)
50 ml of gas A diffuses through a membrane in the same time as for the diffusion of 40 ml of a gas B under identical pressure-temperature conditions. If molecular weight of A is 64 that of B would be
In organic reactions, sodium in liquid ammonia is used as .........
Al2O3 formation involves evolution of a large quantity of heat which makes its use in
Which of the following formula represents the fuming sulphuric acid?
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4 videos|8 docs|51 tests
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