Multiple choice questions or MCQs are order of the day and with each passing day use of MCQs is on the increase especially because of computers and internet. This page covers Chemistry Class 11. MCQs are made in such a way that no important aspect is missed out. Any student taking a test and getting more than 90% marks will surely get similar marks in board exam. This will also form basis for your preparation for entry test. All lessons of Chemistry class 11 are covered. Environmental Chemistry is inter-related with all other branches of _____________? ______________ is three times lighter than air? The gases Nitric oxide NO and Nitrogen dioxide NO2 are represented by ___________?
Synthetic organic chemicals at ______________ concentrations can cause nausea dizziness, tremors and blindness? BOD value is the Biological oxidation of dissolved __________ matter in the sample? The _____________ pH can prevent the formation of Chloramines? The incineration may reduce the _____________ of the waste by two third? Incineration system consists of a _____________ kiln which accept all types of wastes including liquid, solid or sludge? The recycling of _____________ is done by reprocessing, depolymerization or transformation? The layer of gases surrounding the earth is called atmosphere? Lithosphere consists of rigid rocky crust of earth?
The atmosphere is polluted when useful substances which damage the environment? The residence time of NO and NO2 in the atmosphere are 5 and 6 days respectively? ? Natural sources of carbon monoxide emission are volcanic eruption, natural gas emission and oxidation of CH4 in the atmosphere? Basic rain now a days is termed as acid deposition? The thickness of the ozone layer has been increasing? Petroleum or crude oil is a complex mixture of many compounds mainly hydrocarbons? Polyethylene terephthalate can be thermally depolymerized in the presence of a catalyst?