Questions

Q:

Name the two main types of Fermentation?

Answer

Fermentation is the chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.


 


The two most common types of fermentation are


(1) alcoholic fermentation (and) 


(2) lactic acid fermentation.


 


(1) Alcoholic fermentation : the type of fermentation in which ethyl alcohol is the main end product .This is very common in yeast (unicellular fungus) and also seen in some bacteria. Yeast cells release enzymes called zymase complex which bring about the fermentation. The reactions are similar to anaerobic respiration.


 


(2) Lactic acid fermentation : The type of fermentation in which lactic acid is the end product.


It is carried out by some bacteria (e.g. lactic acid bacteria), and also by animals (muscle glycolysis in animals, under oxygen deficiency, results in the formation of lactic acid this is whay we experience in muscle cramps, or "Charley horse").

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Q:

Which equation is an example of a synthesis reaction?

A) 2H2 + O2 → 2H2O B) Na + Cl → NaCl
C) HA + BOH → H2O + BA D) NaCl + AgNO3 → NaNO3 + AgCl
 
Answer & Explanation Answer: B) Na + Cl → NaCl

Explanation:

When two or more chemical species combine to form a single product, the reaction is said to be synthesis reaction. It is also called as Direct Combination reaction.

 

Here in the given options, Sodium (Na) combines with Chlorine (Cl) to form a more complex single product Sodium Chloride (NaCl).

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Filed Under: Chemistry
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Q:

Which one of the following statements about the Elephanta Island is correct?

A) It was given its name by the British after a large elephant structure located there. B) It contains one large cave.
C) It is well-known for a spectacular carving of Vishnu described in the Vishnudharmottara Purana. D) It is associated with the Pashupata sect.
 
Answer & Explanation Answer: B) It contains one large cave.

Explanation:

The Elephanta Caves are located in Western India on Elephanta Island (otherwise known as the Island of Gharapuri), which features two hillocks separated by a narrow valley. The name Ardhanarishvara (famous statue of Elephanta) means the Lord Who is half woman, Ardhanarishvara is also known by other names. The Gupta-era writer Pushpadanta in his Mahimnastava refers to form as dehardhaghatana. Utpala, commenting on the Brihat Samhita, calls this form Ardha-gaurishvara, the Vishnudharmottara Purana simply calls this form Gaurishvara.Buddhist caves in Elephants and the caves built by the followers of Pashupata cult (a Shaivite Hinduschool).The island and its resident caves received the name 'Elephanta' from Portuguese invaders after the discovery of a black stone sculpture of an elephant on the island.

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Filed Under: Indian Geography
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Q:

What are various scheduling queues?

Answer

 



  • Job queue

  • Ready queue

  • Device queue

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Q:

Which of these is an example of negative feedback?

A) After you eat, insulin stimulates the lowering of blood sugar levels. B) Once labor begins, contractions increase in frequency and intensity.
C) After you eat, glucagon stimulates an increase in blood sugar levels. D) As a blood clot begins to form, the process of its formation gets faster and faster.
 
Answer & Explanation Answer: A) After you eat, insulin stimulates the lowering of blood sugar levels.

Explanation:

Eating raises blood sugar levels, insulin stimulates the lowering of blood sugar level. In this example the response to the stimulus (increased blood sugar levels) opposes that stimulus (by lowering blood sugar levels).

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Q:

Climatology is a subspecialty of

A) meteorology B) environmental science
C) oceanography D) marine biology
 
Answer & Explanation Answer: B) environmental science

Explanation:

Climatology is a study of climate which is subspecialty of environmental science studies.

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Q:

Which nutrient provides maximum energy?

A) Fats B) Carbohydrates
C) Proteins D) None of the above
 
Answer & Explanation Answer: A) Fats

Explanation:

The nutrient which provides the maximum energy is Fat. It provides the energy of 9 calories/gram.

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Q:

Who is the author of Meghdoot?

A) Shundraka B) Vishakhadatta
C) Kalidasa D) Chanakya
 
Answer & Explanation Answer: C) Kalidasa

Explanation:
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