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Chemistry

Chemistry
The most electronegative element among the following is

bromine
fluorine
oxygen
sodium

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Chemistry
The high reactivity of fluorine is due to

its high electro negativity
strong F - F bond
availability of d-orbitals
small size of fluorine atom

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Chemistry
What material is used to make electric heater coil ?

Silver
Iron
Nichrome
Copper

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Chemistry
Vulcanization of rubber is carried out by adding

Carbon
Sulphur
Ozone
Phosphorus

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Chemistry
PH value between 6.5-7.5 makes the soil

None of these
Basic
Acidic
Neutral

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Chemistry
The fiber least prone to catch fire is

Terylene
Cotton
Nylon
Polyester

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