19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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
In which on of the following arrangements the given sequence is not strictly according to the properties Indicated against it? (NEET 2021)
Which of the following oxyacid does not contain P–O– P bond? (AIIMS 2018)
Which of the following products will be obtained when copper metal is reacted with HNO3? (AIIMS 2018)
Which of the following forms strong p - p bonding
Which of the following gases is the least reactive?
An aqueous solution of ammonia consists of
Which of the following oxides is the most acidic?
Among the following compounds of nitrogen and hydrogen, the most acidic compound is
Which of the following is the increasing order of enthalpy of vaporization?
Which one of the following compounds is most explosive?
The tendency of nitrogen halides to act as Lewis bases decreases in the order
Which of the following halides of nitrogen is stable?
Among the following, the element that does not show allotropy is
The element which forms oxides in all oxidation states +I to + V is :