\n\n"},"comment":{"@type":"Comment","text":"One allotrope is used in making jewellery and other is used as lubricant."},"encodingFormat":"text/markdown","learningResourceType":"Practice problem","suggestedAnswer":[],"text":"Write the name of two allotropes of carbon."},"name":"Quiz on Carbon and its Compounds","typicalAgeRange":"10-17","url":"https://www.embibe.com/questions/Write-the-name-of-two-allotropes-of-carbon./EM8769064"}
A non-metal X exists in two different forms Y and Z. Y is the hardest natural substance, whereas Z is a good conductor of electricity. Identify X, Y, and Z.
Name the black substance of pencil. Will the current flow through the electrical circuit when we use the sharpened ends of the pencil to complete the circuit?