Tag: properties of natural resources

Quizzes (7) Questions (110)

Questions Related to properties of natural resources

Multiple choice biology properties of natural resources properties of soil soil pollution and its effects soil and soil pollution

Fertility of soil is measured by its ability to 

  1. Retain nutrients

  2. Hold organic materials

  3. Hold water

  4. Support life
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Fertility of the soil is not only decided by its ability to hold water or organic materials or its ability to retain nutrients but it is decided by all the factors combined and how well can it support life. If a soil has a huge thriving of plants, microorganism, etc with the availability of adequate resources then it is considered as very fertile soil.

So the correct answer is 'Support life'.

Multiple choice biology properties of natural resources properties of soil soil pollution and its effects soil and soil pollution

What is the best pH of the soil for cultivation of plants?

  1. 3.4 -5.4

  2. 6.5 -7.5

  3. 4.5 -8.5

  4. 5.5 -6.5
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Soil pH is important because it influences several soil factors affecting plant growth, such as (1) soil bacteria, (2) nutrient leaching, (3) nutrient availability, (4) toxic elements, and (5) soil structure. Bacterial activity that releases nitrogen from organic matter and certain fertilizers is particularly affected by soil pH, because bacteria operate best in the pH range of 5.5 to 7.0. Plant nutrients leach out of soils with a pH below 5.0 much more rapidly than from soils with values between 5.0 and 7.0. Plant nutrients are generally most available to plants in the pH range 5.5 to 6.5. Aluminum may become toxic to plant growth in certain soils with a pH below 5.0. The structure of the soil, especially of clay, is affected by pH. In the optimum pH range (5.5 to 7.0) clay soils are granular and are easily worked, whereas if the soil pH is either extremely acid or extremely alkaline, clays tend to become sticky and hard to cultivate

So, the correct answer is '5.5 -6.5'

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

As one goes up from earth's surface, the temperature of air:

  1. increases

  2. decreases

  3. first increases and then decreases

  4. first decreases and then increases
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

In the atmosphere, temperature decreases with altitude in the troposphere, but then increases in the stratosphere due to ozone absorption of UV radiation.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Fog can be defined as:

  1. Smoke from cigarette

  2. Polluted air from vehicles

  3. Clouds forming close to the ground

  4. A combination of smoke and dust particles
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Fog is a thick cloud of tiny water droplets suspended in the atmosphere at or near the earth's surface which obscures or restricts visibility.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Which of the following statements is true regarding the properties of air?

  1. It is a good conductor of electricity

  2. It is a good conductor of heat

  3. It is translucent in nature

  4. None of these
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

Air is a good conductor of heat.

It is a good conductor of electricity.
It is translucent in nature.
Hence, option $(D)$ is the answer.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Which of the following can show the direction of wind ?

  1. Anemometer

  2. Wind wane

  3. Wind mill

  4. Barometer
Reveal answer Fill a bubble to check yourself
B Correct answer
Explanation

Anemometer: Used to measure the speed of the wind.


Wind wane: Used to show the direction of wind.


Windmill: Converts wind energy to rotational energy.

Barometer: Used to measure atmospheric pressure. 


Hence, option B is correct.

Multiple choice biology properties of natural resources the concept of bernoulli's principle variations in atmospheric pressure air exerts pressure

Which of the following is not true about air?

  1. air can be separated into components

  2. it can be liquefied
  3. liquid nitrogen has a b.p of $-196^\circ C$

  4. air has a chemical formula
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The statement which is not true about air is that it has a chemical formula. Air has no chemical formula. It is a mixture of gases.