Chemistry Question Bank

Aqueous solutions of hydrogen sulphide and sulphur- dioxide when mixed together, yield (KCET 2013)

The correct order of relative acidity is (UP CPMT 2013)

In pyrophosphoric acid the number of hydroxyl groups are (UP CMT 2013)

The mixture of concentrated HCl and HNO3 made in 3 : 1 ratio contains (AIIMS 2013)

Which of the following is not a peroxyl acid? (Manipal 2012)

Standard sodium thiosulphate solution is used in the estimation of iodine present in a solution. The equivalent weight of sodium thiosulphate which is required to make the standard solution is

When SO2 gas is passed into an acidified solution of K2Cr2O7, the oxidation state of chromium changes

Which of the following ions does not have an S—S linkage?

H2SO4 is manufactured from SO2(g) by the

Dehydration of concentrated H2SO4 in the presence of P4O10 produces

Which of the following gases may act both as an oxidizing and a reducing agent?

Sulphur dioxide reacts with chlorine in the presence of charcoal (which acts as a catalyst) to give

H2S is less stable than H2O because

Which of the following compounds is thermodynamically unstable?

H2S turns an acidified KMnO4 solution

H2S turns an acidified K2Cr2O7 solution

Which of the following statements is correct for sulphur?

In ozone, the central oxygen atom uses

Which of the following has pπ – dπ bonding ? (a) NO (b) SO (c) BO (d) CO

The number of lone pairs and the number of S—S bonds in S8 molecules are respectively:

Which of the following statements regarding sulphur is incorrect?

The stability of the hydrides of oxygen, sulphur, selenium and tellurium decreases in the order

Oxygen is more electronegative than sulphur, yet H2S is acidic in nature while H2O is neutral because:

In which of the following species, S-atom assumes sp3 hybrid state? (I) SO3 (II) SO2 (III) H2S (IV) S8

Group 16 elements (except polonium) are called chalcogens because