Questions

Q:

What is the relationship between Resistivity and Conductivity?

Answer

Resistivity :


Resistivity is a measure of the resistance to the flow of electrons. 


Conductivity :


Conductivity is just the inverse of resistivity, σ = 1/ρ, where σ is conductivity and ρ is resistivity.


 


Example:


Think of a pipe and water, the bigger the pipe, the easier water can flow and thus the lower the resistance. 

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Q:

The speed of a boat when travelling downstream is 32 km/h, whereas when travelling upstream it is 28 km/h. What is the speed of the boat in still water?

A) 27 km/h B) 29 km/h
C) 31 km/h D) Cannot be determined
 
Answer & Explanation Answer:

Explanation:

Ans.  Suppose the speed of boat in still water is x km/h and speed of stream is y km/h

Speedof boat in downstream = (x + y) km/h x+ y = 32 …(i) 

Speed of boat in upstream = (x – y) km/h

x – y = 28 …(ii)

Add. Eqs. (i) and (ii), we get 2x = 60

x = 30 km/h

 

 

 

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Q:

Which is the first Sanskrit film produced in India

Answer

Adi Sankara

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Subject: Indian Culture

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Q:

Monopotassium tartarate was used in

A) Fertiliser B) Explosives
C) Photography D) Baking
 
Answer & Explanation Answer: D) Baking

Explanation:

Monopotassium tartarate was used in baking powder.

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Q:

Which of the following is the lightest computer?

A) Desktop B) Tablet
C) Laptop D) Ultrabook
 
Answer & Explanation Answer: B) Tablet

Explanation:

The lightest computer is the tablet.

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Q:

Read the passage carefully and choose the best answer to each question out of the four alternatives and click the button corresponding to it.


Dyslexia is a perceptual disorder often occurring in persons of normal, or even above average intelligence. The reader is unable to perceive correctly what is on a page. Letters and numbers often appear reversed: "b" seems to be "d","quite" is "quiet" and "from" is "form". The reader tends to leave out letters or words or insert words or letters that are not there. Vowel and consonant sounds may be confused. Many dyslexics are left­handed or able to write with either hand. They often confuse left and right. Learning to speak may also be delayed beyond infancy. The condition seems to be inherited. It may persist into adulthood. However, with early recognition and specialized approaches to teaching reading, most dyslexics can learn to read.

Some researchers believe that latent dyslexia may be aggravated by the way reading is taught. The modern whole­word, or look­and­say, method seems to be more of a hindrance to learning for dyslexics than it is for ordinary pupils. The phonetic method of teaching students to learn letters and sound them out appears to achieve better reading results. The problem of words that cannot be sounded out ­ such as rough, laugh or through ­ is not solved by phonetics. These words must simply be memorized. However, for children with dyslexia the problem can be compounded by the failure of parents or teachers to recognize the condition. This can easily lead to emotional problems for dyslexic children, who cannot understand their failure to keep up with their classmates.


In Dyslexia, letters and figures often appear __________

A) Inverted B) Blurred
C) Reversed D) Clustered
 
Answer & Explanation Answer: C) Reversed

Explanation:
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Q:

Which best describes the fossil record?

A) The fossil record provides evidence of a common ancestor to many species B) The fossil record is inaccurate because scientists are not able to date fossils
C) The fossil record cannot provide evidence of evolution D) The fossil record provides evidence that disputes the theory of evolution
 
Answer & Explanation Answer: A) The fossil record provides evidence of a common ancestor to many species

Explanation:

A fossil is a traces or remainings of plants and animals that lived in the past. The fossil record provides evidence of a common ancestor to many species is the option that best describes the fossil record.

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Q:

Which of the following states become the first to have four International Airports?

A) Telangana B) Maharashtra
C) Kerala D) Uttar Pradesh
 
Answer & Explanation Answer: C) Kerala

Explanation:

Kerala state become the first to have four International Airports with Kannur Airport.

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