Mercury is a toxic substance that severely contaminates land, water, air and the food chain. Which among the following is/are source(s) of mercury pollution? I. Pesticides II. Dental amalgam fillings III. Fluorescent lamp IV. Coal-based thermal power plants Select the correct answer using the codes given below:

Which of the following is/are the function(s) of environment ? 1. Supplying resources 2. Sustaining life 3. Providing aesthetic services Select the correct answer using the code given below :

Which of the following statements is/are correct? 1. India is a signatory to the United Nations Convention to Combat Desertification (UNCCD). 2. Ministry of Home Affairs is the nodal Ministry in the…

Due to some reasons, if there is a huge fall in the population of species of butterflies, what could be its likely consequence/consequences? 1. Pollination of some plants could be adversely affected.…

With reference to ecological niche, which of the following statements is/are correct? 1. It represents the range of conditions that it can tolerate the resources it utilizes and its functional role i…

Which of the following practices can help in water conservation in agriculture? 1. Reduced or zero tillage of the land 2. Applying gypsum before irrigating the field 3. Allowing crop residue to remai…