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Unit - 9.2 Amorphous Forms Of Carbon CHEMISTRY - Unit - 9.2 Amorphous Forms Of Carbon

ICSE - STD 8 - CHEMISTRY (ICSE - English Medium). 37 questions in this chapter.

Question types

Unit - 9.2 Amorphous Forms Of Carbon question types

37 questions across 7 question groups — pick any mix to generate a CHEMISTRY paper with step-by-step answer keys.

37
Questions
7
Question groups
5
Question types
Sample Questions

Unit - 9.2 Amorphous Forms Of Carbon questions

One sample from each question group in this chapter. Select any group above to see the full set with answer keys.

Q 17MCQ1 Mark
The fermentation of animal dung in the absence of air is brought about by:
  • A
    aerobic bacteria
  • ✓
    anaerobic bacteria
  • C
    symbiotic bacteria
  • D
    none of the above

Answer: B.

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Q 18MCQ1 Mark
The process due to which a complex organic compound decomposes into simpler products when heated strongly in the absence of air is called:
  • A
    chemical decomposition
  • B
    analysis
  • ✓
    destructive distillation
  • D
    fractional distillation

Answer: C.

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Q 19MCQ1 Mark
The content of carbon in anthracite coal is:
  • ✓
    90% to 95%
  • B
    75% to 80%
  • C
    60% to 70%
  • D
    50% to 60%

Answer: A.

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Q 20MCQ1 Mark
The process by which ferric oxide changes to iron when heated with charcoal powder is called
  • A
    oxidation
  • ✓
    reduction
  • C
    dehydration
  • D
    decomposition

Answer: B.

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Q 21MCQ1 Mark
When steam is passed over white hot charcoal, it forms
  • A
    carbon dioxide gas only
  • B
    carbon dioxide gas and hydrogen gas
  • ✓
    carbon monoxide gas and hydrogen gas
  • D
    methane gas and carbon dioxide gas

Answer: C.

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Q 27Match The Following.4 Marks
Column AColumn B
1. An amorphous allotrope of carbon used in gas masks.(a) Anthracite
2. An amorphous allotrope of carbon used for making electrodes of dry cells.(b) Ammonia liquor
3. Name of a mixture of gases obtained by passing steam through white hot charcoal.(c) Gas carbon
4. The hardest variety of coal.(d) Charcoal
 (e) Water gas
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