19,000+ solved questions for JEE Advanced, JEE Mains, NEET & IChO — with answers and expert explanations.
Which of the following statements is correct for the iodine molecule?
When conc. H₂SO₄ is heated with P₂O₅ the acid is converted to (UP CPMT 2012)
Which one of the following statements is not valid for oxoacids of phosphorous? (Manipal 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
When a colorless gas is passed through bromine water, only decolourisation takes places. The gas is (AFMC 2012)
Which of the following is not a peroxyl acid? (Manipal 2012)
The mixture of concentrated HCl and HNO₃ made in 3 : 1 ratio contains (AIIMS 2013)
The correct order of relative acidity is (UP CPMT 2013)
Aqueous solutions of hydrogen sulphide and sulphur- dioxide when mixed together, yield (KCET 2013)
The compound represents phosgene is (Manipal 2013)
Bleaching powder loses its power on keeping for a long time because (KCET 2013)
The statement that is not correct is (KCET 2014)
The species that is not hydrolysed in water is (KCET 2014)
Acidity of diprotic acids in aqueous solutions increases in the order (CBSE AIPMT 2014)
Which among the following group 16 elements exists in more than two allotropic states? (JCECE 2014)
The gaseous product formed when HOCl reacts with H₂O₂ in acidic medium is (Kerala CEE 2014)
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)
Which of the following oxide is most acidic? (JIPMER 2017)
Among the following compounds, which will produce POCl₃ with PCl₅? (JIPMER 2017)
In which of the following compounds, sulphur show maximum oxidation number? (JIPMER 2017)
Name the gas that can readily decolourise acidified KMnO₄ solution. (NEET 2017)
Xenon hexafluoride reacts with silica to form a xenon compound X. The oxidation state of xenon in X is (JIPMER 2018)
In which of the following arrangements, the order is not strictly according to the property written against it? (AIIMS 2018)
Which of the following products will be obtained when copper metal is reacted with HNO₃? (AIIMS 2018)
Which of the following oxyacid does not contain P–O– P bond? (AIIMS 2018)