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Chemistry

Chemistry
Which one of the following metals does not react with water to produce Hydrogen ?

Potassium
Cadmium
Lithium
Sodium

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Chemistry
The gas present in the stratosphere which filters out some of the sun's ultraviolet light and provides an effective shield against radiation damage to living things is

oxygen
ozone
methane
helium

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Chemistry
Which is known as carbolic acid?

Oxalic acid
Phenol
Acetic acid
Ethanol

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Chemistry
Which of the following is a monoatomic gas?

Nitrogen
Neon
Fluorine
Oxygen

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Chemistry
In a reaction of the type A+B ? C+D one could ensure it to be a first order reaction by :

Increasing the temperature
Adding a catalyst
Increasing the concentration of a reactant
Increasing the concentration of a product

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Chemistry
Which one of the following statements is not correct? Vulcanisation of rubber makes it

Chemical resistant
Soft and flexible
Withstand higher temperatures
Strong and hard

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