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Q:

Which   one   of   the   following   is   not   a semiconductor?

A) Silicon B) Germanium
C) Quartz D) Gallium arsenide
 
Answer & Explanation Answer: C) Quartz

Explanation:

Semiconductors are the basic materials used in the present solid state electronic devices like diode, transistor, ICs, etc. 2. Lattice structure and the atomic structure of constituent elements decide whether a particular material will be insulator, metal or semiconductor. Semiconductors are elemental (Si, Ge) as well as compound (GaAs, CdS, etc.). Silicon, Germanium, Gallium Arsenide are semiconductors, but Quartz is an insulator.

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Filed Under: Chemistry
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Q:

If x + y = 12 and x2 + y2 = 94, then xy is 

A) 25 B) 50
C) 144 D) 238
 
Answer & Explanation Answer: A) 25

Explanation:
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Filed Under: Simplification
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Q:

Which of these is India's National Anthem?

A) Ae Mere Pyare Watan B) Maa Tujhe Salaam
C) Aisa Desh Hai Mera D) Jana Gana Mana
 
Answer & Explanation Answer: D) Jana Gana Mana

Explanation:
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Filed Under: General Awareness
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Q:

What is the value of (sin60° + 2/√3) ?

A) (2√3+1)/√3 B) 7/2√3
C) 3 D) 2+√3
 
Answer & Explanation Answer: B) 7/2√3

Explanation:
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Q:

Which one of the following is an insulator?

A) copper B) wood
C) mercury D) aluminium
 
Answer & Explanation Answer: B) wood

Explanation:
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Filed Under: Chemistry
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Q:

A truck covers a distance of 550 metres in one minute where as a bus covers a distance of 33 km in 3/4 hours. Then the ratio of their speeds is :

A) 1:3 B) 2:3
C) 3:4 D) 1:4
 
Answer & Explanation Answer: C) 3:4

Explanation:
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Filed Under: Ratios and Proportions
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Q:

Which figure can be formed by folding the figure given?

A) 1 B) 2
C) 3 D) 4
 
Answer & Explanation Answer: B) 2

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Filed Under: Paper Folding
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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/Phrase.
Will-o-the wisp

A) Something that is impossible to get or achieve. B) To keep off an unwanted and undesirable person.
C) To spend recklessly. D) Accept or leave the offer.
 
Answer & Explanation Answer: A) Something that is impossible to get or achieve.

Explanation:
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Filed Under: English
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