The number of metals which can liberated `H_2` from dil HCl is:
Zn,Cu,K,Al,Hg,Na,Ni,Ag,Au

Which of the following metals will displace copper form CuSO_4 solution? Al, Ni, Ag, Hg, Zn

Two metals A and B have reduction potentials values -0.76V and +0.34V respectively. Which of these will liberate H_2 from dil H_2SO_4 ?

Out of Al,Zn and Ag, only………………cannot diplace hydrogen from dil. HCl.

Which of the following metals will displace hydrogen from dilute hydrochloric acid? Ag Cu Al pt

Which is most abundant metal from the following list? Mg, Fe, Al, Na, K

The amount of electricity which release 2.0g of gold from a gold salt is same as that which dissolves 0.967g of copper anode during the electrolysis of copper sulphate solution. What is the oxidation number of gold in the gold ion ? (At mass of Cu=63.5,Au=197)

You are provided with a container made up of aluminium. You are also provided with solutions of dil HCl, dil HNO_3 , ZnCl_2 and H_2O . Out of these solutions which solution, can be kept in the aluminium container? Name the type of reactions takes place.

Which of the following statements are correct: Aluminium can displace Cu from CuSO_4 solution Fe from FeSO_4 solution Zn from ZnSO_4 solution Al from Al_2(SO_4)_3 solution

A substance 'S' is used as a building material and is insoluble in water. When reacted with dil H_2SO_4 it produces a gas 'X' which turned lime water milky. When the liberated gas 'K' passed in excess, the milkiness disappeared. Write the name and chemical formula of S and its reactions will dil H2SO4, name the acid and base from which the substance 'S' is made.

The work function for the following metals is given Na: 2.75V, K:2.30eV, Mo:4.17eV, Ni:5.15eV Which of these metals will not give photoelectron emission fro a radiation of wavelength 3300 oversetcircA from a He-Cl laser placed 1 m away from the photocell?