Questions

Q:

Which of the following is a Decomposition Reaction?

A) 2HgO ----> 2Hg + O2 B) 6NaNO3 ----> 6NaNO2 + 3O2
C) ZnCO3 ----> ZnO + CO2 D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:

All the given reactions are Decomposition reactions.

Decomposition reaction is a reaction in which only one reactant is splitted into two or more products.

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Filed Under: Chemistry
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Q:

How many amino acids are found in living organisms?

A) 1500 B) 3000
C) 20 D) 4
 
Answer & Explanation Answer: C) 20

Explanation:

Amino acids are a crucial, yet basic unit of protein, and they contain an amino group and a carboxylic group. They play an extensive role in gene expression processes.

 

Amino acids become proteins when 50 or more are bonded together in a chain. All the millions of different proteins in living things are formed by the bonding of only 20 amino acids.

 

Eight of these amino acids are essential and cannot be produced by the body.

They are:

• Leucine

• Isoleucine

• Lysine

• Threonine

• Methionine

• Phenylalanine

• Valine

• Tryptophan

•  Histidine is an amino acid that is categorized as semi-essential since the human body doesn't always need it to properly function

 

Nonessential amino acids are produced by the human body either from essential amino acids or from normal protein breakdowns. Nonessential amino acids include:

• Asparagine

• Alanine

• Arginine

• Aspartic acid

• Cysteine

• Glutamic acid

• Glutamine

• Proline

• Glycine

• Tyrosine

• Serine.

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Filed Under: Biology
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Q:

Which of these phosphorylates ADP to make ATP?

A) E B) B
C) C D) A
 
Answer & Explanation Answer: A) E

Explanation:

The ATP is synthesized from ADP and an inorganic phosphate and involves special channel proteins that are embedded in a membrane. ATP is formed in the electron transport chain of photosynthesis and cellular respiration.

 

which_of_these_phosphorylates_adp_to_make_atp1554270963.jpg image

 

Photosynthesis only occurs in autotrophic organisms while respiration occurs in all types of organisms.

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Filed Under: Biology
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Q:

Who is the author of the book 'The Prince' ?

A) Niccolo Machiaveli B) Emile Zola
C) Bernard Shaw D) V.S. Sharma
 
Answer & Explanation Answer: A) Niccolo Machiaveli

Explanation:
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Q:

How long does a basketball game last?

A) 35 min B) 55 min
C) 1 hr 15 min D) 48 min
 
Answer & Explanation Answer: D) 48 min

Explanation:

A basketball game last for a total of 48 minutes which has 4 quarters of 12 minutes each excluding all timeouts, 15 min half time, fouls,...

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Q:

Which lake has possess 20% of India’s seagrass distribution?

A) Chilika Lake B) Kolleru Lake
C) Dal Lake D) Wular Lake
 
Answer & Explanation Answer: A) Chilika Lake

Explanation:

ChilikaLake (Odisha) has possess 20% of India’s seagrass distribution.

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Q:

Which alternative energy source is exhaustible?

A) tidal energy B) wind energy
C) solar energy D) geothermal energy
 
Answer & Explanation Answer: D) geothermal energy

Explanation:

Based on conventionality in deriving energy, energy sources could be classified as

 

Conventional ::

coal, oil, hydro, nuclear, etc... sources which can be used up or exhaustible.

(and)

Non - conventional ::

solar, wind, tidal, geothermal, biogas, etc... sources which are not exhausted.

 

Among the given options, Geothermal energy is the alternative energy source among all the choices that are given in the question, that is exhaustible.

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Filed Under: Physics
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Q:

The world's fastest elevator that can operate at a record speed of 1,260 meters per minute is set to be installed in ___________.

A) Japan B) Spain
C) China D) Italy
 
Answer & Explanation Answer: C) China

Explanation:

The world's fastest elevator that can operate at a record speed of 1,260 meters per minute is set to be installed in a skyscraper complex in China. The elevator has various safety features including brake equipment that uses materials with high heat resistance. Apart from this, the elevator can absorb vibration during the high-speed operation to make the ride comfortable.

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Filed Under: General Awareness
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