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Chemistry

Chemistry
Williamson's synthesis is widely used in the laboratory preparation of

Esters
Ethers
Alcohols
Aldehydes

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Chemistry
Physico-chemical characteristics of water in water sources undergo changes due to

Evapotranspiration
Auatic fungi
Effluents
Aquatic macrophytes

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Chemistry
Two electrons in an orbital are differentiated by which of the following ?

Magnetic quantum number
Spin quantum number
Principal quantum number
Azimuthal quantum number

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

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

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Chemistry
Which among the following is found in chlorophyll ?

A l3+
Mg2+
Ca2+
Fe2+

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Chemistry
Which gas is used as fire extinguisher ?

Carbon monoxide
Carbon dioxide
Carbon suboxide
Sulphur dioxide

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