Questions

Q:

Conductivity in a metal results from the metal atoms having

A) highly mobile electrons in the valence shell B) high electronegativity
C) high ionization energy D) highly mobile protons in the nucleus
 
Answer & Explanation Answer: A) highly mobile electrons in the valence shell

Explanation:

The outer most electrons that are free to move are called valency electrons that are responsible for the conductivity in the metal atoms.

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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:

In 1921,during which one of the following tours, Gandhiji shaved his head and began wearing loincloth in order to identity with the poor?

A) Ahmadabad B) Champaran
C) Chauri Chaura D) South India
 
Answer & Explanation Answer: D) South India

Explanation:

On 22nd September 1921, Gandhi made a momentous decision to change his attire. From the elaborate Gujarati attire, he decided on a simple dhoti and shawl. This epoch-making decision was taken by Gandhiji in Madurai after he decided that he has to work for and with the with the poor people of India and how can he identify with them if he wears different clothes from them.

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Filed Under: Indian History
Exam Prep: Bank Exams

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Q:

Which of the following can be a symptom of AIDS?

A) Hair loss B) Severe weight gain
C) Tiredness D) All the above
 
Answer & Explanation Answer: C) Tiredness

Explanation:

From the aboe given options, only extreme and unexplained tiredness is the symptom of AIDS.

 

The other symptoms of AIDS include: recurring fever, thrush — a thick, whitish coating of the tongue or mouth that's caused by a yeast infection and sometimes accompanied by a sore throat, diarrhea that lasts more than a week, headaches, lightheadedness, and/or dizziness.

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Filed Under: Biology
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Q:

What does 'M' stand for in chemistry?

Answer

'M' is used as a unit of molarity and stands for mole per litre i.e, number of moles of solute per liter of solution.

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Q:

Which of the following commands will allow a Linux on iSeries administrator to quickly scan backup tapes for files saved via a tar command on a Linux system?

A) The Linux command mt B) The Linux command cpio
C) The OS/400 command RST option(*print) D) The OS/400 command DSPTAP option(*savrst)
 
Answer & Explanation Answer: B) The Linux command cpio

Explanation:
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Q:

How many posts are reserved for women at all levels in Panchayat Raj System in India?

A) 2/3 B) 1/4
C) 1/3 D) 1/2
 
Answer & Explanation Answer: C) 1/3

Explanation:

1/3 of the posts are reserved for women at all levels in Panchayati Raj System in India.

 

Panchayat Raj System in India ::

 

>> Recommend by: Balwantrai Mehta Committee 

>> System: 3-tier

>> Established by: Jawahar Lal Nehru

>> Constitutional amendment: 73rd (1992)

>> Schedule: 11th

>> First state to adopt: Rajasthan

>> Article: 243

>> Direct election: Gram Panchayat

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Filed Under: Indian Politics
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Q:

Water is more dense than cooking oil.

A) TRUE B) FALSE
Answer & Explanation Answer: A) TRUE

Explanation:

Yes, the given statement that water is more dense than cooking oil is TRUE as water more denser than oil it is sinked when it is poured in oil.

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Subject: Physics
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