Tag: mineral coal

Questions Related to mineral coal

Which one of the following statements regarding CO gas is correct ?

biology biogeochemical cycles carbon cycling mineral coal carbon cycle

  1. It is produced by the complete combustion of fossil fuels.

  2. It combines with haemoglobin to form carbamino-haemoglobin.

  3. It impairs oxygen transport resulting in giddiness, headache, asphyxia and even death.

  4. All of these

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Correct Option: C
Explanation:

Carbon monoxide ( CO ) is produced due to incomplete combustion of fossil fuels, metallurgical operations, automobile emission, cigarette smoking. CO combines with haemoglobin, produces carboxyhaemoglobin which impairs oxygen transport resulting in headache, decreased vision, cardiovascular disease, asphyxia.

If the carbon atoms fixed by producers already have passed through three species, the tropic level of the last species would be.

biology biogeochemical cycles carbon cycling mineral coal carbon cycle

  1. Scavenger

  2. Tertiary producer

  3. Tertiary consumer

  4. Secondary consumer

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Correct Option: C
Explanation:

If the carbon atoms fixed by producer already have passed through three species then the trophic level of the last species(i.e., third species) would be tertiary consumer.
Producers $\rightarrow 1^o$ consumers $\rightarrow 2^o$ consumers $\rightarrow 3^o$ consumers.

Which of the following is the largest reservoir of carbon?

biology ecology carbon cycling mineral coal carbon cycle

  1. Soil

  2. Atmosphere

  3. Ocean

  4. Sedimentary rocks

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Correct Option: C
Explanation:

In the ocean, there are underwater sediments and sediment rocks of carbonate like in the form of limestone, dolomite etc. Thus, the correct answer is option C.

How does photosynthesis help to maintain the percentage of oxygen and carbon dioxide in the atmosphere?

biology ecology carbon cycling mineral coal carbon cycle

  1. By giving off carbon dioxide and absorbing oxygen

  2. By giving off oxygen and absorbing carbon dioxide

  3. By releasing oxygen and carbon dioxide

  4. By absorbing oxygen and carbon dioxide.

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Correct Option: B
Explanation:

During photosynthesis, carbon dioxide is fixed to form carbohydrate by the dark reaction. The water molecules are broken down during the light reaction and release oxygen. Thus, the two process helps to maintain the balance of oxygen and carbon dioxide in the atmosphere.

So, the correct answer is option B.

Biochemical cycle with gaseous phase is

biology ecology carbon cycling mineral coal carbon cycle

  1. Carbon

  2. Sodium

  3. Phosphorus

  4. Magnesium

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Correct Option: A

Which of the following gases has role an important in maintaining atmospheric temperature?

biology biogeochemical cycles carbon cycling mineral coal carbon cycle

  1. Nitrogen

  2. Oxygen

  3. Argon

  4. Carbon dioxide

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Correct Option: D

Major 'reservoirs' of $CO _{2}$ are:

biology biogeochemical cycles carbon cycling mineral coal carbon cycle

  1. Land, water, plants

  2. Fossil fuel, soil, , oceans

  3. Volcanic Eruption

  4. Deforestation

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Correct Option: B

Affinity of hemoglobin for CO is two hundred times more considerable than

biology biogeochemical cycles carbon cycling mineral coal carbon cycle

  1. $O _{2}$

  2. $CO _{2}$

  3. Sox

  4. Nox

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Correct Option: A

The atomic no. of carbon is ________

biology biogeochemical cycles carbon cycling mineral coal carbon cycle

  1. 5

  2. 6

  3. 12

  4. 14

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Correct Option: B
Explanation:

The atomic no. of carbon is 6, The atomic no. of Boron is 5, The atomic no. of Magnesium is 12, The atomic no. of Silicon is 14.

The carbon cycle is the movement of carbon on Earth by the processes of --- and ---- .

biology biogeochemical cycles carbon cycling mineral coal carbon cycle

  1. Plants and animals

  2. Respiration and photosynthesis

  3. Breathing in and breathing out

  4. Oxygen and carbon dioxide

Show answer
Correct Option: B
Explanation:
Carbon exists in the atmosphere as the compound carbon dioxide. It first enters the ecological food web when photosynthetic organisms, such as plants and certain algae, absorb carbon dioxide through tiny pores in their leaves. The plants then "fix" or capture the carbon dioxide and are able to convert it into simple sugars like glucose through the biochemical process known as photosynthesis. Plants store and use this sugar to grow and to reproduce. Thus, by their very nature as makers of their own food, plants remove carbon dioxide from the atmosphere. When plants are eaten by animals, their carbon is passed on to those animals. Since animals cannot make their own food, they must get their carbon either directly by eating plants or indirectly by eating animals that have eaten plants.
Respiration is the process in which oxygen is used to break down organic compounds into carbon dioxide  (CO2) and water (H2O). For an animal then, respiration is both taking in oxygen (and releasing carbon dioxide) and oxidizing its food (or burning it with oxygen) in order to release the energy the food contains. In both cases, carbon is returned to the atmosphere as carbon dioxide.
So, the correct answer is 'Respiration and photosynthesis'.