{"@context":"https://schema.org/","@type":"Quiz","dateCreated":"2025-01-10T05:42:09.202Z","dateModified":"2026-01-29T06:59:30.868Z","typicalAgeRange":"11-18","educationalLevel":"WBJEE","assesses":"Chemistry - The p-Block Elements","educationalAlignment":[{"@type":"AlignmentObject","alignmentType":"educationalTopic","targetName":"The p-Block Elements"},{"@type":"AlignmentObject","alignmentType":"educationalSubject","targetName":"Chemistry"},{"@type":"AlignmentObject","alignmentType":"educationalExam","targetName":"WBJEE"}],"name":"Quiz about The p-Block Elements","about":{"@type":"Thing","name":"Chemistry - The p-Block Elements"},"hasPart":[{"@type":"Question","eduQuestionType":"Multiple choice","learningResourceType":"Practice problem","educationalLevel":"intermediate","name":"Question About The p-Block Elements","text":"The number(s) of -OH group(s) present in H3PO3 and H3PO4 is/are:}","encodingFormat":"text/markdown","comment":{"@type":"Comment","text":"The structure of oxyacids of phosphorus determines the number of -OH groups. Check for direct P-H bonds and P=O bonds."},"suggestedAnswer":[{"@type":"Answer","position":0,"encodingFormat":"text/markdown","text":"

3 and 3 respectively

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":1,"encodingFormat":"text/markdown","text":"

3 and 4 respectively

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":2,"encodingFormat":"text/markdown","text":"

2 and 3 respectively

","comment":{"@type":"Comment","text":"\"\""}},{"@type":"Answer","position":3,"encodingFormat":"text/markdown","text":"

1 and 3 respectively

","comment":{"@type":"Comment","text":"\"\""}}],"acceptedAnswer":{"@type":"Answer","position":2,"encodingFormat":"text/markdown","text":"

2 and 3 respectively

","comment":{"@type":"Comment","text":"The structure of oxyacids of phosphorus determines the number of -OH groups. Check for direct P-H bonds and P=O bonds."},"answerExplanation":{"@type":"comment","text":"H3PO3: This molecule has two -OH groups and one hydrogen atom directly bonded to phosphorus (P). H3PO4: This molecule has three -OH groups and one P=O bond."}}}]}

The number(s) of -OH group(s) present in H3PO3 and H3PO4 is/are:

Show Hint

The Correct Option is C

Solution and Explanation

Top Questions on The p-Block Elements

Questions Asked in WBJEE exam

The number(s) of -OH group(s) present in H₃PO₃ and H₃PO₄ is/are: