Metals and Elements GK Questions – Part 9
81. The atoms in a molecule are joined together by _____________
a. Covalent bond
b. Ionic bond
c. Single bond
d. Double bond
ANSWER:
a. Covalent bond
82. After any chemical reaction __________________
a. Total mass of products is same as the total mass of the reactants
b. Total mass of products is less than the total mass of the reactants
c. Total mass of products is more than the total mass of the reactants
d. None of the above
ANSWER:
a. Total mass of products is same as the total mass of the reactants
83. Reactive metals are extracted by ______________
a. Carbon
b. Carbon monoxid.
c. Emulsion
d. Electrolysis
ANSWER:
d. Electrolysis
84. Why are noble metals so named.
a. Because they are expensive
b. Because they are generally resistant to corrosion and oxidation
c. Because they are rarely found in the earth
d. Because they are more malleable and ductile than others
ANSWER:
b. Because they are generally resistant to corrosion and oxidation
85. Metals are good conductors of electricity because
a. they are electrically unstable
b. atoms in their molecules are loosely packed
c. they have free electrons
d. they are ductile
ANSWER:
d. they are ductile
86. Into which of the following metals does radioactive Uranium decay when it loses all its radioactivity?
a. Radium
b. Carbon
c. Lead
d. Hydrogen
ANSWER:
c. Lead
87. Galvanized iron has a thin coating of :
a. copper
b. tin
c. zinc
d. aluminium
ANSWER:
c. zinc
88. The Venus symbol (?), a circle with a small cross below it, is the gender symbol for female and also the metal –
a. gold
b. copper
c. zinc
d. silver
ANSWER:
b. copper
89. Plumbism is a condition due to the poisoning effect of –
a. lead
b. mercury
c. copper
d. uranium
ANSWER:
a. lead
90. Duralumin is an alloy of copper and
a. lead
b. zinc
c. tin
d. aluminium
ANSWER:
d. aluminium
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- Metals and Elements GK Questions – Part 12
- Metals and Elements GK Questions – Part 11
- Metals and Elements GK Questions – Part 10
- Metals and Elements GK Questions – Part 8
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Metals and Elements
- Metals and Elements GK Questions and Answers
- Metals and Elements GK Questions – Part 2
- Metals and Elements GK Questions – Part 3
- Metals and Elements GK Questions – Part 4
- Metals and Elements GK Questions – Part 5
- Metals and Elements GK Questions – Part 6
- Metals and Elements GK Questions – Part 7
- Metals and Elements GK Questions – Part 8
- Metals and Elements GK Questions – Part 9
- Metals and Elements GK Questions – Part 10
- Metals and Elements GK Questions – Part 11
- Metals and Elements GK Questions – Part 12
- Metals and Elements GK Questions – Part 13
- Metals and Elements GK Questions – Part 14
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