General Science-77

     1.      Superconductivity is a material property associated with:

a.       cooling a substance without a phase change

b.      frictionless liquid flow

a.       a loss of thermal resistance

b.      a loss of electrical resistance

     2.      If a metal can be drawn into wires relatively easily it is called:

a.        Malleable

b.      Ductile

c.       Extractive

d.      Tactile

     3.      In which country was a method for making rust-resistant iron discovered in the fifth century B.C.?

a.       Sumeria

b.      Egypt

c.       India

d.      Babylon

     4.      Cystitis is the infection of which of the following?

a.       Liver

b.      Urinary Bladder

c.       Pancreas

d.      Lung

     5.      At room temperature, most elements are in which phase of matter?

a.      Solid

b.      Liquid

c.       Gas

d.      Plasma

     6.      Who is called the Father of the Nuclear Navy?

a.       Edward Teller

b.      Robert Oppenheimer

a.      Hymen Rickover

b.      Chester Nimitz

     7.      The science of weights and measures is called:

a.      Metrology

b.       Meteorology

a.       Mineralogy

b.      Morphology

     8.      Which of the following is primarily composed of calcium carbonate?

a.       Fish scales

b.      Shark teeth

a.      Oyster Shells

b.      Whale bones

     9.      Yeast, used in making bread is a:

a.       Plant

b.      Fungus

c.       Bacteria

d.      Seed

    10.  At what point are the Celsius and Fahrenheit scales equal?

a.       37 Degree

b.      100 Degree

c.       0 Degree

d.      -40 Degree

    11.  In a certain electronic circuit the output is positive if input 1 is positive and input 2 is zero. If both inputs are positive the output is zero. This is:

a.       an AND circuit

b.      a NOR circuit

c.       an OR circuit

d.      a high-pass filter

     12.  To reverse the direction of rotation of a three-phase AC induction motor, do one of the following:

a.      reverse any two of the three-phase connections

b.      change the frequency of the applied AC power

c.       operate the motor below the stall torque at very high slip

d.      none of the above

     13.   What are the three elements of a bipolar transistor? Are they the:

a.       grid, plate, cathode

b.      suppressor, deflector, target

c.       energizer, controller, terminus

d.      emitter, base, collector

     14.  Seawater (i.e. saltwater) freezes at:

a.       the same temperature as fresh water.

b.      at a slightly higher temperature than fresh water.

c.       at a slightly lower temperature than fresh water.

d.       seawater does not freeze.

     15.  Nitrous oxide, commonly called laughing gas, has been a matter of concern to environmentalists recently because:

a.       it is thought to cause cancer at low concentrations.

b.       it produces photochemical smog.

c.        it is a greenhouse gas.

d.      none of the above

      16.  Ozone in the upper atmosphere is produced from:

a.       Lightning

b.      photochemical reactions

c.       electrical appliances on Earth

d.      model fractals

      17.  Pollination by wind is called:

a.       Autogamy

b.      Entomophily

c.       Anemophily

d.      Ornithophily

      18.  What is the technique by which lasers are used to photograph objects and reproduce them in three dimensions?

a.      Holography

b.      Sonography

c.       Exography

d.      Photography

      19.  Atolls are most probably formed by:

a.       a rise in the earth's crust

b.      sand brought in from the mainland

c.       collapse of the center of a volcano

d.      coral reef upbuilding during subsidence

      20.  The radioactive element most commonly detected in humans is:

a.      potassium-40

b.      cobalt-60

c.       iodine-131

d.      plutonium-238