19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
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)
Bleaching powder loses its power on keeping for a long time because (KCET 2013)
The compound represents phosgene is (Manipal 2013)
The increases order of reducing power of halogen acid is (Manipal 2013)
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)
When a colorless gas is passed through bromine water, only decolourisation takes places. The gas is (AFMC 2012)
When Cl2 gas reacts with hot and concentrated sodium hydroxide solution, the oxidation number of chlorine changes from (CBSE AIPMT 2012) (a)zero to +1 and zero to –5
The number of P—O—P bonds in cyclic metaphosphoric acid is
The number of P–O–P bonds in the structure of phosphorus pentoxide and phosphorus trioxide are respectively (2005)
Which of the following compounds consists of a P–P linkage?
Which of the following oxoacids of phosphorus is a reducing agent and a monobasic acid as well?
The true statement for the acids of phosphorus, H3PO2, H3PO3 and H3PO4 is
Which of the following structures represents hypophosphoric acid? (a) (b) (c) (d)
Which of the following statements is true for the H3PO3 molecule?
The reaction of white phosphorus with aqueous NaOH gives phosphine and another phosphorus containing compound. The reaction type, the oxidation states of phosphorus in phosphine and other product are respectively: