Tag: evs

Questions Related to evs

Choose the correct answer from the alternatives given.
If an animal needed to store energy for long-term use, but not be encumbered with the weight of extra.tissue, which is the best molecule for storage?

evs food components simple test for nutrients test for nutrients protein and its function energy from different food components nutrients and foodstuffs

  1. Fructose and glucose in the form of honey

  2. High-calorie fat molecules

  3. Complex cellulose molecules

  4. Glycogen with extensive side branches of glucose

Show answer
Correct Option: B
Explanation:

If an animal needed to store energy for long-term use, but not be encumbered with the weight of extra tissue, then high-calorie fat molecules are the best molecules for storage. So, the correct answer is "high-calorie fat molecules".

Oil is obtained from the plant and animal sources can be detected by 

evs food for health simple test for nutrients test for nutrients protein and its function nutrients and foodstuffs

  1. Oil paper test

  2. Starch

  3. Calcium sulphate solution

  4. Iodine solution

Show answer
Correct Option: A
Explanation:
Some plants and animal produce oil. Oil paper test is a test used to detect oil in plant and animal products. It include a process in which a paper is moved back and forth few times against the substance and the presence of oil on the paper is checked.
So the correct answer is 'Oil paper test'.

Which of the following helps in nutrient conservation?

evs food for health simple test for nutrients test for nutrients protein and its function nutrients and foodstuffs

  1. Leaching

  2. Mineralisation

  3. Nitrification

  4. Immobilisation

Show answer
Correct Option: B,C
Explanation:

A.Leaching - the loss of water-soluble plant nutrients from the soil. It does not help in nutrient conservation.

B.Mineralisation – The process of formation of minerals from the organic compounds is called mineralisation. It helps in nutrient conservation.

C.Nitrification – Formation of nitrites or nitrates from ammonia or nitrogenous compounds is called Nitrification. It also helps in nutrient conservation.

D. Immobilisation – elements, cannot be transported from one place to another place in the body is called Immobilisation and the elements are called Immobilised elements.

So, the correct option is ‘Mineralisation or Nitrification’. 

Kerosene has a lower ignition temperature than diesel.

evs what if it finishes? lpg, cng treasures from the earth fuel and conservation

  1. True

  2. False

Show answer
Correct Option: A
Explanation:

A fuel with lowest ignition temperature means, it catches fire easily and is called highly inflammable. Kerosene has lower ignition temperature than diesel. This means kerosene will start to catch fire faster than diesel.

The characteristics of a good fuel are:

evs how to save fuel lpg, cng treasures from the earth fuel and conservation

  1. it should release more energy

  2. it should be safe

  3. it should be easily transportable

  4. all of the above

Show answer
Correct Option: D
Explanation:

The characteristics of a good fuel are near to the characteristics of an ideal fuel, as there can not exist an ideal fuel in nature.
It should release more energy,  it should be safe,  it should be easily transported, readily available,  should not cause pollution on combustion etc.

The full form of C.N.G is:

evs how to save fuel lpg, cng treasures from the earth fuel and conservation

  1. Compound Natural Gas

  2. Complex Natural Gas

  3. Compound New Gas

  4. Compressed Natural Gas

Show answer
Correct Option: D
Explanation:

CNG is made by compressing natural gas (which is mainly composed of methane, CH4), to less than 1 percent of the volume, it occupies at standard atmospheric pressure. It is stored and distributed in hard containers at a pressure of 2025 MPa (2,9003,600 psi), usually in cylindrical or spherical shapes. Thus it is also called Compressed natural gas (CNG) (Methane stored at high pressure).

What does CNG stand for?

evs how to save fuel lpg, cng treasures from the earth fuel and conservation

  1. Clean natural gas

  2. Compressed natural gas

  3. Cheaper natural gas

  4. Compressed natural gasoline

Show answer
Correct Option: B
Explanation:

CNG is Compressed Natural Gas.

Spark plugs are not necessary in a diesel engine because 

evs how to save fuel lpg, cng treasures from the earth fuel and conservation

  1. compression of the gases heat them above the ignition temperature of the fuel

  2. diesel is more volatile than petrol

  3. there is deposition of carbon in the spark plug which is difficult to remove

  4. diesel is easily ignited

Show answer
Correct Option: C

Which one of the following is fuel of our body?

evs how to save fuel lpg, cng treasures from the earth fuel and conservation

  1. Petrol

  2. Diesel

  3. Food

  4. Water

Show answer
Correct Option: C
Explanation:

Our body runs on the fuel it gets from what we eat food.

What is the full form of PNG?

evs how to save fuel lpg, cng treasures from the earth fuel and conservation

  1. Petrol Natural Gas

  2. Piped Natural Gas

  3. Pressurise Natural Gas

  4. Pure Natural Gas

Show answer
Correct Option: B
Explanation:

Piped Natural Gas is abbreviated as PNG. Piped Natural gas (PNG) is used for domestic, commercial and industrial consumption. PNG has several distinctions to its credit of being a pollution free fuel, economical and safer fuel.