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General Science - Questions and Answers

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771. What is the main constituent of natural gas ?
A. Methane
B. Ethane
C. Butane
D. Hydrogen
Explanation:
772. Rusting of iron is an example of :
A. rapid oxidation
B. spontaneous combustion
C. slow oxidation
D. reduction
Explanation:
773. Who developed the telegraphic code ?
A. Andre Ampere
B. Samuel Morse
C. Joseph Henry
D. Jean Fourier
Explanation:
774. Atmospheric air contains the following in varying amounts : 1. Nitrogen2. Carbondioxide3. Argon4. Oxygen
A. 4, 1, 2, 3
B. 1, 3, 2, 4
C. 3, 1, 2, 4
D. 1, 4, 3, 2
Explanation:
775. Amalgam isa mixture of :
A. any non-metal and chlorine
B. any metal and florine
C. any non-metal and lead
D. any metal and mercury
Explanation:
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