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प्रश्न
Choose the correct answer from the options given below:
Aluminum powder is used in thermite welding because
A. It is a strong reducing agent
B. It is a strong oxidizing agent
C. It is corrosion resistant
D. It is a good conductor of heat
उत्तर
It is a strong reducing agent
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संबंधित प्रश्न
Choose the correct answer from the options given below:
The main ore used for the extraction of iron is
A. Haematite
B. Calamine
C. Bauxite
D. Cryolite
State the main components of the following alloys:
Bronze
How does aluminum react with the Air ?
Name an ore which is concentrated by:
forth floatation process
Give three ways in which the metal zinc differs from the non-metals carbon. At least one of the differences must be a chemical difference?
State a reason why zinc is used in:
cosmetics?
Arrange the metals:
calcium, iron, magnesium and sodium in order of their reactivity with water placing the most reactive first.
Brass is an alloy of ______.
Name the main constituent metal in the following alloy:
Brass
Metal sheets : Malleable : : Electric wires : _______
