Start learning →

Indian Navy SSR Carbon and its Compounds — practice questions

Explore 2 free Carbon and its Compounds questions in Indian Navy SSR Chemistry. Open each question or exercise to read its content, reference answers and available explanation.

Practise Carbon and its Compounds with Quill →

Carbon and its Compounds questions and exercises with answers

Showing questions 1–2 of 2.

Diamond and graphite differ because they are:Read the answer and worked solution →Why do soaps NOT work well in hard water?Read the answer and worked solution →

Worked practice questions

Diamond and graphite differ because they are:

  1. isotopes of carbon
  2. different atom types
  3. isomers of carbon
  4. allotropes of carbon
Show answer and solution

Correct answer: D. allotropes of carbon

Both are pure carbon. Allotropes are different physical forms of the same element, arising from different bonding arrangements (diamond is 3D, graphite is layered).

Open this question →

Why do soaps NOT work well in hard water?

  1. They evaporate under typical conditions
  2. They form insoluble salts with Ca and Mg ions
  3. They turn alkaline
  4. They become acidic
Show answer and solution

Correct answer: B. They form insoluble salts with Ca and Mg ions

1. Hard water contains dissolved calcium and magnesium salts. 2. Soap reacts with these ions instead of cleaning fabrics. 3. Insoluble curdy precipitates of Ca and Mg salts form. 4. These precipitates do not foam and do not remove dirt. 5. So soaps lose cleaning power in hard water. _Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_

Open this question →

How to practise

  1. Choose a Carbon and its Compounds question and try to work out your answer.
  2. Open the question to check the correct answer and read its worked solution.
  3. Continue in the app for bite-sized lessons, explanations and review with Quill. You can start without creating an account.

More Chemistry topics

Organic ChemistryAlkenesAlcohols Phenols EthersPolymersChemical Equilibriump-Block ElementsThe p-Block ElementsAtoms and Molecules