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Q:

Ananas comosus is the scientific name of ________.

A) Custard Apple B) Pineapple
C) Bamboo D) Pomegranate
 
Answer & Explanation Answer: B) Pineapple

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Filed Under: General Science
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Q:

Any online 'demo' is

A) An interactive presentation B) A non-interactive presentation
C) Not a sequential presentation D) An active user interface
 
Answer & Explanation Answer: B) A non-interactive presentation

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Filed Under: Computer
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Q:

A drainage pattern where a river is joined by its tributaries approximately at right angles is ____________

A) Dendritic B) Trellis
C) Rectangular D) Radial
 
Answer & Explanation Answer: B) Trellis

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Q:

The Indian musical instrument 'Surbahar' is of which type?

A) Impact B) Wind
C) String D) Percussion
 
Answer & Explanation Answer: C) String

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Q:

The attenuation in optical fibre is mainly due to

A) Scattering B) Absorption
C) Both (a) and (b) D) Neither absorption nor scattering
 
Answer & Explanation Answer: A) Scattering

Explanation:

The reason for transmitting data over optical fibers, is because the speed of data transmission through optical wires are equal to the speed of light. The intense speed of data transfer speed, has lead to the use of optical fibers. The optical fiber uses the technology of transferring light beams, from one end to the other end of optical cables. The attenuation in optical fiber is due to Scattering. The reason why scattering is caused, due to the folding, in the wire.

 

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Filed Under: Physics
Exam Prep: Bank Exams , CAT

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Q:

Insulators have resistivity of the order of 

A) 106 Ω m to 108 Ω m B) 10-12 Ω m to 10-17 Ω m
C) 10-8 Ω m to 10-6 Ω m D) 1012 Ω m to 1017 Ω m
 
Answer & Explanation Answer: D) 1012 Ω m to 1017 Ω m

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Filed Under: Physics
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Q:

Which of the following elements has the lowest melting point?

A) Titanium B) Sulphur
C) Argon D) Zinc
 
Answer & Explanation Answer: C) Argon

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Filed Under: Chemistry
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Q:

Nitrogen fixation is a process of

A) Assimilation of nitrate B) Utilisation of nitrogen gas
C) Conversion of organic nitrogen to proteins D) Conversion of molecular nitrogen to ammonia
 
Answer & Explanation Answer: C) Conversion of organic nitrogen to proteins

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Filed Under: Chemistry
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