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Andhra Pradesh SSC (Class 10) Carbon Compounds — practice questions — page 2

Explore 76 free Carbon Compounds questions in Andhra Pradesh SSC (Class 10) Science and Technology. Open each question or exercise to read its content, reference answers and available explanation.

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Carbon Compounds questions and exercises with answers

Showing questions 31–60 of 76.

How many valence electrons does a carbon atom have?Read the answer and worked solution →Why does carbon form covalent rather than ionic bonds?Read the answer and worked solution →Which is an allotrope of carbon?Read the answer and worked solution →The general formula of an alkane is:Read the answer and worked solution →Which functional group is present in ethanoic acid?Read the answer and worked solution →Which property of carbon allows it to form long chains?Read the answer and worked solution →What is the IUPAC name of CH3CH2OH?Read the answer and worked solution →Which is the simplest aldehyde?Read the answer and worked solution →The flame produced when a saturated hydrocarbon burns in plentiful air is:Read the answer and worked solution →The chemical reaction where alcohol and carboxylic acid form a fruity-smelling ester is called:Read the answer and worked solution →Diamond conducts heat well but does NOT conduct electricity because:Read the answer and worked solution →Graphite is soft and a good conductor of electricity because:Read the answer and worked solution →Which catalyst is used to add hydrogen across the double bond of an alkene?Read the answer and worked solution →Why do soaps NOT work well in hard water?Read the answer and worked solution →Which of the following is an unsaturated hydrocarbon?Read the answer and worked solution →Why are the chemical properties of all members of a homologous series similar?Read the answer and worked solution →Which of these reactions is a substitution reaction?Read the answer and worked solution →Identify the product of the reaction: 2C2H5OH + 2Na ->Read the answer and worked solution →How can ethanol be converted to ethene?Read the answer and worked solution →Which is the bond pattern of nitrogen molecule N2?Read the answer and worked solution →Which is NOT an allotrope of carbon?Read the answer and worked solution →Esterification reaction is usually carried out in the presence of:Read the answer and worked solution →How many isomers exist for the molecular formula C4H10?Read the answer and worked solution →On reacting 50 mL ethanol with excess conc. H2SO4 at 443 K, the main product is:Read the answer and worked solution →Why does graphite act as a lubricant?Read the answer and worked solution →Soap molecules in water form micelles because:Read the answer and worked solution →Identify the product of the reaction of ethanoic acid with sodium hydroxide:Read the answer and worked solution →Why does ethanoic acid freeze in winter (called glacial acetic acid)?Read the answer and worked solution →Which contains both saturated and unsaturated bonds?Read the answer and worked solution →Which alkane is added to LPG to make it detectable through smell?Read the answer and worked solution →

Worked practice questions

How many valence electrons does a carbon atom have?

  1. Four
  2. Two
  3. Six
  4. Eight
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Correct answer: A. Four

1. Carbon has atomic number 6 with electronic configuration 2, 4. 2. The outermost shell holds four electrons. 3. These four valence electrons let carbon form four covalent bonds. 4. So the answer is four. _Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_

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Why does carbon form covalent rather than ionic bonds?

  1. It is too heavy for ions
  2. It can share four electrons to fill its octet
  3. It does not have valence electrons
  4. Its nucleus is too small
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Correct answer: B. It can share four electrons to fill its octet

1. Forming C⁴⁺ or C⁴⁻ would need very large amounts of energy. 2. Carbon instead shares its four valence electrons with other atoms. 3. Sharing fills the outer shell up to eight electrons. 4. So carbon makes covalent bonds rather than ions. _Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_

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Which is an allotrope of carbon?

  1. Quartz
  2. Sulphur rhombic
  3. Diamond
  4. Phosphorus white
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Correct answer: C. Diamond

1. Allotropes are different physical forms of the same element. 2. Carbon has crystalline allotropes such as diamond, graphite and fullerene. 3. Quartz is a form of silica, not carbon. 4. So diamond is an allotrope of carbon. _Source: syllabus Science Ch 4 'Carbon and its Compounds' (byjus.com extract)_

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