Chemistry

Q181

Brass gets discoloured in air because of the presence of which of the following gases in air ________ ?

Q182

By which process does the smell of cooking spread to all the rooms in a house?

Q185

Clive in one of his Gazettes made it mandatory that no Muslim shall be given an employment higher than that of chaprasy or a junior clerk has recorded by______________?

Q186

Day and night are the results of__________?

Q187

Diamond is harder than Graphite because of___________?

Q188

Dr.Abdul Qadeer Khan did his Ph.D. from Leaven University of____________?

Q189

During rainy season Wooden doors are difficult to open or closure because of ________ ?

Q190

Electrostatic precipitator is used to control?

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