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Chemistry

Chemistry
Sea weeds are important source of

Chlorine
Bromine
Iodine
Iron

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Chemistry
For a spontaneous chemical process, the free energy change is

Depends on whether the reaction is exothermic or endothermic
Negative
Positive
Zero

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Chemistry
Sea water is saltier than rain water because

Sea beds have salt producing mines
Sea animals are salt producing
The air around the sea is saltish
Rivers wash away salts from earth and pour them into the sea

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Chemistry
The items amenable to detection by soft x-rays are

contrabands
genuine coins from counterfeit coins
lead in bullets
narcotics

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Chemistry
Glycol is used to manufacture which of the following ?

Nylon
Terylene
Rubber
Artificial silk

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Chemistry
Asbestos is formed of :

Copper, Zinc and Manganese
Calcium and Magnesium
Calcium and Zinc
Lead and Iron

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