Tag: occurrence of carbon compounds in nature

Questions Related to occurrence of carbon compounds in nature

Use of biodegradable plastic is not appreciable instead of non-biodegradable plastic.

allotropes of carbon occurrence of carbon compounds in nature polymers chemistry

  1. True

  2. False

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Correct Option: B
Explanation:

Biodegradable plastics are appreciable instead of non-biodegradable plastics.

Which of the followings may reduce plastic pollution?

allotropes of carbon occurrence of carbon compounds in nature polymers chemistry

  1. Stop using bottled water

  2. Bring your own reusable grocery bags with you when you go to the store

  3. Use a refillable dispenser for your hand soap and dish washing liquid, one large bottle is better than using a bunch of small ones

  4. Both A and B

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Correct Option: A,B,C
Explanation:

We can help to reduce plastic pollution by minimizing the use of plastic and we can do it by stop using bottled water, by bring our own reusable grocery bags when go to the store and by using  a refillable dispenser for your hand soap and dish washing liquid, one large bottle is better than using a bunch of small ones. 

Food and personal product manufacturers, retailers and consumers need to be aware of the benefits of plastics packaging and the need to dispose plastics in a manner which leads to increasing emphasis on recycling. Everyone must understand that the environmental legacy we leave behind for future generations will depend on our resolve to : $REDUCE - REUSE - RECYCLE$.


Which are the keys initiatives by which we can reduce plastic pollution?

allotropes of carbon occurrence of carbon compounds in nature polymers chemistry

  1. Reusing our plastic bags or utensils

  2. Recycling what we have already used

  3. Reducing the unnecessary use of plastic

  4. All of these

Show answer
Correct Option: D
Explanation:

To reduce plastic pollution $3R's$ are used.

$1.$ Reduce.
$2.$ Reuse
$3.$ Recycle
To reduce means to avoid uses of plastic in our daily life.
To reuse means to uses plastic materials, again and again, to avoid their wastage and to recycle means to recycle the already existing plastic in order to avoid the formation of any new plastic.

Which of the following statements is/are incorrect for diamond?
(a) The refractive index of diamond is highest among solids.
(b) Diamond is hard because all the valence electrons of each carbon atom are involved in bond formation.
(c) Diamond is thermodynamically more stable than graphite.
(d) One carat of diamond represents its weight.

chemistry occurrence of carbon compounds in nature organic compounds allotropes of carbon versatile nature of carbon

  1. All are correct

  2. a, b and c

  3. a and b

  4. c only

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Correct Option: D
Explanation:

Graphite is thermodynamically more stable than diamond, diamond is kinetically stable thus statement c is incorrect. 


Diamonds and other gemstones are weighed in metric carats: one carat is equal to 0.2 grams, about the same weight as a paperclip. Carat is just a unit to represent its weight. 


Diamond also possess an extremely high refractive index and fairly high dispersion. 

Hence, the answer is option $\text{D}$

Carbon in __________ form conducts electricity.

chemistry occurrence of carbon compounds in nature organic compounds allotropes of carbon versatile nature of carbon

  1. diamond

  2. graphite

  3. coal

  4. petroleum

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Correct Option: B
Explanation:

Graphite is an allotrope of carbon. It is an electrical conductor due to vast electron delocalisation within the layers. These are mobile electrons hence responsible for electrical conduction.

The carbon atoms in diamond are bonded to each other by:

chemistry occurrence of carbon compounds in nature organic compounds allotropes of carbon versatile nature of carbon

  1. ionic bond

  2. coordinate bond

  3. hydrogen bonds

  4. covalent bonds

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Correct Option: D
Explanation:

The bonds between carbon atoms in diamond are covalent because covalent bonding is the only option when only nonmetals are present.

The rigid network of carbon atoms, held together by strong covalent bonds, makes diamond very hard. This makes it useful for cutting tools, such as diamond-tipped glass cutters and oil rig drills.

Which of the following is not an allotrope of carbon?

chemistry occurrence of carbon compounds in nature organic compounds allotropes of carbon versatile nature of carbon

  1. Buckyballs

  2. diamond

  3. graphite

  4. carbon dioxide

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Correct Option: D
Explanation:

Buckyballs, diamond and graphite are allotrops of carbon while carbon dioxide is a compound of carbon.

Which of the following is not an allotropic form of carbon?

chemistry occurrence of carbon compounds in nature organic compounds allotropes of carbon versatile nature of carbon

  1. Fluorine

  2. Fullerene

  3. Diamond

  4. Graphite

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Correct Option: A
Explanation:

Fullerene, graphite and diamond all are different allotrops of carbon.

Fluorine is an entirely different element, whose atomic number is $9$.
Option A is the correct answer.
Fluorine is not an allotrope of carbon.

Hydrogen fuel is used in:

chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

  1. liquid-propellant rockets

  2. portable fuel cell applications

  3. cars

  4. all of above

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Correct Option: D
Explanation:

Hydrogen fuel can provide motive power for liquid-propellant rockets, cars, boats and airplanes, portable fuel cell applications or stationary fuel cell applications, which can power an electric motor. The problems of using hydrogen fuel in cars arise from the fact that hydrogen is difficult to store in either a high pressure tank or a cryogenic tank.

We can save energy by :

chemistry occurrence of carbon compounds in nature substances, objects and energy alternative fuels and energy sources alternative sources of energy

  1. buying expensive cars

  2. using aeroplanes

  3. using CFL

  4. using ships

Show answer
Correct Option: C
Explanation:

Simple things like switching off fans and lights when not in use, using maximum daylight, walking instead of driving for short distances, using CFL instead of traditional bulbs, proper insulation for leakage of energy can go a long way in saving energy.


Hence the correct option is C.