16.  Which of the following is not a valid domain name?

a

  www.yahoo.co.in

b

 www.yahoo.co.uk

c

 www.yahoo.com

d

 www.com.yahoo

Answer & Explanation
Answer : Option D
Explanation :

17.  Night blindness is caused by the deficiency of

a

  Vitamin C

b

 Vitamin A

c

 Vitamin D

d

 Vitamin B

Answer & Explanation
Answer : Option B
Explanation :

18.  Logarithm tables were invented by

a

  John Napier

b

 John Douglas

c

 John Doe

d

 John Harrison

Answer & Explanation
Answer : Option A
Explanation :

19.  Who invented Gunpowder?

a

  G. Ferdinand Von Zeppelin

b

 Sir Frank Whittle

c

 Leo H Baekeland

d

 Roger Bacon

Answer & Explanation
Answer : Option D
Explanation :

20.  Solar eclipse will take place when

a

  The earth is between the moon and the sun

b

 The moon does not lie on the line joining the sun and the earth

c

 The sun is between the moon and the earth

d

 The moon is between the sun and the earth

Answer & Explanation
Answer : Option D
Explanation :

21.  Rain water helps to increase the _________ to some extent.

a

  Phosphorous contents

b

 Calcium contents

c

 Potash contents

d

 Nitrogen contents

Answer & Explanation
Answer : Option B
Explanation :

22.  How many teeth does a normal adult dog have?

a

  32

b

 34

c

 38

d

 42

Answer & Explanation
Answer : Option D
Explanation :

23.  What is an FET?

a

  French Energy Transfer

b

 Field Effect Transformer

c

 Field Effect Transistor

d

 Farad Effect Transformer

Answer & Explanation
Answer : Option C
Explanation :

24.  If force is expressed in Newton and the distance in metre, then the work done is expressed in

a

  Kg wt

b

 Watt

c

 Kg wt m

d

 Joule

Answer & Explanation
Answer : Option D
Explanation :

25.  When was the first elevator built?

a

  1743

b

 1739

c

 1760

d

 1785

Answer & Explanation
Answer : Option A
Explanation :

26.  Inside an aeroplane, flying at a high altitude

a

  The pressure is the same as that outside

b

 The pressure inside is less than the pressure outside

c

 Normal atmospheric pressure is maintained by the use of air pumps

d

 Normal humidity and partial vacuum are maintained

Answer & Explanation
Answer : Option C
Explanation :

27.  Rainbow is produced when sunlight fall on drops of rain. Which of the following physical phenomena are responsible for this? I. Diffusion II. Refraction III. Internal reflection

a

  I and II

b

 I and III

c

 I, II and III

d

 II and III

Answer & Explanation
Answer : Option D
Explanation :

28.  What is not always necessary for accessing the Web?

a

  A Web browser

b

 A connection to an Internet Access Provider

c

 A computer

d

 A modem

Answer & Explanation
Answer : Option D
Explanation :

29.  When were blue jeans invented?

a

  1900s

b

 1870s

c

 1850s

d

 1860s

Answer & Explanation
Answer : Option C
Explanation :

30.  What does the abbreviation http stand for?

a

  Hypertext Transfer Protocol""

b

 Hindustan Times Technical Professionals

c

 Harvard Teletext Proof

d

 Hypertext Transfer Protocol

Answer & Explanation
Answer : Option D
Explanation :
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