Tag: evs

Questions Related to evs

Deforestation

evs how to save fuel define fossil fuels conservation of fuels reason for finishing of materials (resources) fuel and conservation

  1. Increases pollution

  2. Decreases pollution

  3. Does not effect pollution

  4. None of the above

Show answer
Correct Option: A
Explanation:

Deforestation  is decrease in number of trees in forest so this leads to in decrease the photosynthesis process which in turn increases the pollution.
Hence option A is correct.

Difference between Burgundy's mixture and Bordeaux mixture is the presence of  in the former

evs constitutes of diet balanced diet and malnutrition minerals in our diets types of nutrients

  1. CuSO4

  2. Na2CO3

  3. Both (a) and (b)

  4. Water

Show answer
Correct Option: B
Explanation:

Bordeaux mixture consists of copper sulphate, lime and water and Burgundy's mixture is copper sulphate, sodium carbonate, and water.

Most abundant mineral of animal body is

evs constitutes of diet balanced diet and malnutrition minerals in our diets types of nutrients

  1. Iron

  2. Sodium

  3. Potassium

  4. Calcium

Show answer
Correct Option: D

One of the following minerals is responsible to regulate your heart beat

evs constitutes of diet balanced diet and malnutrition minerals in our diets types of nutrients

  1. Sulphur

  2. Sodium

  3. Potassium

  4. Iron

Show answer
Correct Option: B

Which of the following is not a vitamin deficiency disease

evs constitutes of diet balanced diet and malnutrition minerals in our diets types of nutrients

  1. Addison's disease

  2. Goitre

  3. Keratomalacia

  4. Xerophthalmia

Show answer
Correct Option: B

Murrah, Mehsana, Jaffrabadi are breeds of

evs production of food from animals contribution of louis pasteur discoveries by louis pasteur discovery of microorganisms

  1. Buffalo

  2. Cow

  3. Cattle

  4. Horse

Show answer
Correct Option: A
Explanation:

The best known breeds of Indian buffaloes are the murrah, Jaffrabadi, Nili, Bhadawari and sweti.

Exotic breeds ______________.

evs production of food from animals contribution of louis pasteur discoveries by louis pasteur discovery of microorganisms

  1. Require specific environment

  2. Hardy

  3. Sturdy

  4. Takes less food

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Correct Option: A
Explanation:
Exotic breeds require specific environment. The exotic breads of cattle population are under intensive feeding system which consists of stall feeding in which the keeper has control over the diet composition. while the indigenous varieties are under an extensive feeding system where animals are let out for gazing. The keep a do not own control over the duet composition of the animals. The feeding of the cattle is to be carried on in scientific manna with special emphasis on the quality and quantity of fodder. Besides, stringent clean liner and hygiene are of hight importance while milling so that they can be maintained distance free.

Zebu cattle is ______________.

evs production of food from animals contribution of louis pasteur discoveries by louis pasteur discovery of microorganisms

  1. Water Buffalo

  2. Indian Buffalo

  3. Cow

  4. Sheep

Show answer
Correct Option: C
Explanation:

Zebu (Bos primigenius indicus or Bos indicus), sometimes known as humped cattle, indicus cattle, or brahmin cattle are just a type of domestic cattle originating in South Asia (the Indian subcontinent). They are characterised by a fatty hump on their shoulders, drooping ears and a large dewlap.

Mark the incorrect statement:


a) Pasteurization inactivates some microbes
b) It destroys some organisms
c) Makes the milk tasty

evs louis pasteur contribution of louis pasteur discoveries by louis pasteur discovery of microorganisms

  1. a, b

  2. b, c

  3. a, c

  4. All

Show answer
Correct Option: A
Explanation:

Pasteurized milk can be consumed without boiling as it is free from harmful microbes. The milk is heated to about $700^{\circ}C$ for $15$ to $30$ seconds and then suddenly chilled and stored. By doing so, it prevents the growth of microbes. This process was discovered by Louis Pasteur. It is called pasteurization.

The term antibiotic was coined by

evs louis pasteur contribution of louis pasteur discoveries by louis pasteur discovery of microorganisms

  1. Edward Jenner

  2. Louis Pasteur

  3. Selman Waksman

  4. Alexander Fleming

Show answer
Correct Option: C
Explanation:

Waksman is credited with coining the term antibiotics, to describe compounds derived from other living organisms such as penicillin, though the term was first used by the French dermatologist François Henri Hallopeau, in 1871, to describe a substance opposed to the development of life

So, the correct answer is 'Selman Waksman'