Questions

Q:

Optical fiber works on the principle of

A) Scattering B) interference
C) total internal reflection D) refraction
 
Answer & Explanation Answer: C) total internal reflection

Explanation:

Optical_fiber_works_on_the_principle_of1556277954.jpg image

 

Optical fiber works on the principle of total internal reflection.

 


The Total Internal Reflection is the phenomenon in which the complete reflection of a light ray reaching an interface with a less dense medium when the angle of incidence exceeds the critical angle.

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Q:

In the binary Language each letter of  the alphabet, each number and each special character is made up of a unique combination of  _________

A) eight bytes B) eight kilobytes
C) eight characters D) eight bits
 
Answer & Explanation Answer: D) eight bits

Explanation:
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Q:

Eye Test Logical Challenge

lines1499317691.jpg image

A) 15 B) 14
C) 16 D) 17
 
Answer & Explanation Answer: A) 15

Explanation:
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58 16845
Q:

Which of the following statement(s) is/are INCORRECT?

I. Alkenes are fairly unreactive.

II. Alkenes burn with blue flame.

III. Alkanes burn with yellow flame.

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: D) All I, II and III

Explanation:
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Q:

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

Genetic variation is the cornerstone of evolution, without which there can be no natural selection, and so a low genetic diversity decreases the ability of a species to survive and reproduce, explains lead author Yoshan Moodley, Professor at the Department of Zoology, University of Venda in South Africa.

Two centuries ago, the black rhinoceros – which roamed much of sub Saharan Africa – had 64 different genetic lineages; but today only 20 of these lineages remain, says the paper. The species is now restricted to five countries, South Africa, Namibia, Kenya, Zimbabwe and Tanzania. Genetically unique populations that once existed in Nigeria, Cameroon, Chad, Eritrea, Ethiopia, Somalia, Mozambique, Malawi and Angola have disappeared. The origins of the 'genetic erosion' coincided with colonial rule in Africa and the popularity of big game hunting. From the second half of the 20th century, however, poaching for horns has dramatically depleted their population and genetic diversity, especially in Kenya and Tanzania.


From the second half of the 20th century what has caused a dramatic fall in black rhinoceros population?

A) poaching B) colonial rule
C) big game hunting D) fall in genetic diversity
 
Answer & Explanation Answer: A) poaching

Explanation:
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Q:

What will be output of following program ?

#include
int main()

{

int a = 10;
void *p = &a;
int *ptr = p;
printf("%u",*ptr);
return 0;

}

A) 10 B) Address
C) 2 D) Compilation error
 
Answer & Explanation Answer: A) 10

Explanation:

Void pointer can hold address of any data type without type casting. Any pointer can hold void pointer without type casting.

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Q:

Rearrange the parts of the sentence in correct order.

 

Stem cells

P : are being researched

Q : forming blood vessels

R : especially for

 

A) RQP B) QRP
C) PQR D) PRQ
 
Answer & Explanation Answer: D) PRQ

Explanation:
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Q:

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

There's more than the 101-seater dining table at the Falaknuma Palace that is awe inspiring. The library done in rosewood and mahogany is a place that will force anyone to pause, if only to admire the fine original polish, the furniture and the walnut carved high roof. The last is supposedly an imitation of the one at Windsor Castle.

The library is almost the size of a large banquet hall and acts as the passage to other parts of the palace including the dining area. For years the palace had no librarian because they couldn't find the right person to do justice to the treasure trove of books collected by the Nizam's family over several decades. That is until they found Asif Husain Arastu who belongs to the family that owned the famous A A Husain book store in Abids. So when his friend and historian Anuradha Naik pointed out the palace's requirement at the library, Husain was delighted. On his very first day as the librarian at the magnificent Taj Falaknuma palace, Asif Husain found a reference book on 'How to paint grass' by Alfred East.

Which part of the palace is an imitation of the Windsor Palace?

A) 101-seater dining table B) The library's roof
C) The banquet hall D) The library's furniture
 
Answer & Explanation Answer: B) The library's roof

Explanation:
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