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Q:

A copper wire of radius r and length lhas a resistance of R. A second copper wire with radius 2r and length lis taken and the two wires  are  joined  in  a  parallel  combination. The  resultant  resistance   of  the  parallel combination of the two wires will be

A) 5 R B) 5 R/4
C) 4 R/5 D) R/5
 
Answer & Explanation Answer: D) R/5

Explanation:

1st copper wire: R = pl/A = pl/ πr2

2ndcopper wire: R’ = p’l’/A’ = pl/(4 πr2) = R/4

If joined in parallel, (1/Req) = (1/R) + (1/R’)

= 1/R + 4/R1/Req= 5/R

Req= R/5

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Filed Under: Physics
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Q:

An image created to accompany words is called

A) A Heirogylph B) An Illustration
C) A Logo D) An Icon
 
Answer & Explanation Answer: B) An Illustration

Explanation:

An Illustration is a visual image created to accompany words to depict them.

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Filed Under: Computer
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Q:

Scientist who discovered blood groups

A) Krebs B) Pavlov
C) Karl Landsteiner D) Darwin
 
Answer & Explanation Answer: C) Karl Landsteiner

Explanation:
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Filed Under: Biology

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Q:

Select the antonym of
celibate

A) chaste B) virtuous
C) promiscuous D) continent
 
Answer & Explanation Answer: C) promiscuous

Explanation:
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Filed Under: English
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Q:

Yoga city in India?

A) Varanasi B) Allahabad
C) Rishikesh D) Amritsar
 
Answer & Explanation Answer: C) Rishikesh

Explanation:

Rishikesh is a city in India’s northern state of Uttarakhand. As the city is renowned as a center for studying yoga and meditation it is called as Yoga city in India.

 

Yoga_city_in_india_-_Rishikesh1561462362.jpg image

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Filed Under: Indian Geography
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Q:

Who is known as father of  Biology

A) Aristotle B) Darwin
C) Lamark D) Linneus
 
Answer & Explanation Answer: A) Aristotle

Explanation:
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Filed Under: Biology

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Q:

Synapsis occurs during

A) Mitosis B) Meiosis
C) Both A & B D) None
 
Answer & Explanation Answer: B) Meiosis

Explanation:

Synapsis is the pairing of two homologous chromosomes that occurs during meiosis. It allows matching-up of homologous pairs prior to their segregation, and possible chromosomal crossover between them.

Synapsis takes place during prophase I of meiosis.

It is also called as Syndesis.

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Filed Under: Biology
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Q:

Who is the new CEO of Ford Motors?

Answer

Mark Fields

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Subject: General Awareness

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