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To get a P-type of Germanium, with which of the following
should germanium be mixed ?
(a) Trivalent impurities
(b) Tetravalent impurities
(c) Pentavalent impurities
(d) None of these
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Which of these is true for the speed of an electro-magnetic wave and the speed of light ? (a) The former is greater (b) Both speeds are equal (c) The latter is greater than the former (d) None of these
When one-fourth of a number is subtracted from one-third of the same number 12 is obtained. The number is (1) 63 (2) 72 (3) 120 (4) 144
please provide the sample question paper for RRB commercial apprentice exams @ abhishekmani@live.com
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Name the natural resources found in ocean (a) Sodium, Magnesium and Calcium salts (b) Precious metals (c) Precious stones and pearls (d) All of these
all railway recruitment board goods guard, assistant station master,commercial clerk and other non technical questions.
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Light year is a unit of (a) Time (b) Speed (c) Space (d) None of these
sir/madam i applied for RRB (Chennai)for section Engineer (S& T) can u plz send previous papers and syllabus to murali221423@gmail.com
Which of the following waterfalls is highest in the world? (1) King George VI (2) Ribbon (3) Angel (4) Niagra
A wire of resistance 10 ohms is drawn out to three times its original length. The new resistance will be (1) 90 ohm (2) 10 ohm (3) 30 ohm (4) 120 ohm
The sum of an even and an odd number is (a) Always even (b) Always odd (c) Sometimes odd and sometimes even (d) None of these
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