General Science – Exercise – 3

General Science » Exercise – 3

101. One Joule is equal to

(a) 105 ergs
(b) 103 ergs
(c) 107 ergs
(d) 1011 ergs

102. Atoms of an element differ from those of all other elements in

(a) atomic number and electronic configuration
(b) number of neutrons and number of valence electrons
(c) atomic number and number of valence electrons
(d) number of neutrons and electronic configuration

103. What is the wavelength of visible spectrum?

(a) 8500 – 9800 angstrom
(b) 7800 – 8000 angstrom
(c) 3900 – 7600 angstrom
(d) 1300 – 3000 angstrom

104. Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?

(a) Thorium
(b) Radium
(c) Plutonium
(d) Radan

105. Electric current is measure by

(a) commutator
(b) anemometer
(c) ammeter
(d) voltmeter

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