19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following oxide is most acidic? (JIPMER 2017)
Nitrogen dioxide and sulphur dioxide have some properties in common. Which property is shown by one of these compounds, but not by the other? (CBSE AIPMT 2015)
The gaseous product formed when HOCl reacts with H2O2 in acidic medium is (Kerala CEE 2014)
Which among the following group 16 elements exists in more than two allotropic states? (JCECE 2014)
Acidity of diprotic acids in aqueous solutions increases in the order (CBSE AIPMT 2014)
The correct arrangement of following acids of phosphorus in the increasing order of oxidation state of phosphorus is (Guj CET 2014)
The species that is not hydrolysed in water is (KCET 2014)
The statement that is not correct is (KCET 2014)
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 the cyclo-S8 molecule of rhombic sulphur, all the S—S bond lengths and all the S—S—S bond angles are respectively (approximate values)
Which of the following is/are correct?
O3 cannot oxidise:
A green coloured solution of a salt changes its colour to light pink on passing ozone through it. Which of the following species represent pink and green colour respectively ?
In the presence of water, sulphur is oxidized by ozone to give
A compound ‘X’ upon reaction with H2O produced a colourless gas ‘Y’ with rotten fish smell. Gas ‘Y’ is absorbed in a solution of CuSO4 to give Cu3P2 as one of the products. Predict the compound ‘X’ (NEET (Odisha)2019)
Identify the incorrect statement related to PCl5 from the following: (NEET 2019)
Which of the following rare gas is the abundant in air? (JIPMER 2019)
In how many of the following number of lone at central atom is zero XeO3, XeO2F2, XeO4, XeO3F2, XeO3F6 ? (AIIMS2019)