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6. Olds and bases Make predictions for the following ?(AS) i) Aluminium is used to make electrical wires ii) Iron is used in constructing bridges and houses

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Similar Questions
Q1
Give reasons for the following:
a)Sodium does not occur in the free state.
b)Copper is usedfor making electrical wires.
c)Iron is used to construct bridges and houses.
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Q2
Give reason for the following - 1) sulphur is used in the vulcanisation of rubber. 2)iron is used for constructing bridges and houses. 3) copper is used for electrical wires. 4)aluminium foils are used to wrap food items. 5) graphite is used as an electrod in dry cells.
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Q3

why iron is used in constructing bridges and houses?

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Q4

Assertion:- Copper wires are used for electricity transmission in our houses but outside our houses, aluminium wires are used for electricity transmission.

Reason:- Aluminium is inexpensive and lighter than copper.


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Q5

Assertion (A) - Copper wires are used for electricity transmission in our houses but outside our houses, aluminium wires are used for electricity transmission.

Reason (R)- Aluminium is inexpensive and lighter than copper.


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