Match List-I (oxidation number) with List-II (the element) and select the correct answer using the codes given below the lists : List-I A. 2 B. 3 C. 4 D. 6 List-II 1. Oxidation number of Mn in MnO₂ 2. Oxidation number of S in H₂SO₄ 3. Oxidation number of Ca in CaO 4. Oxidation number of Al in NaAlH₄

Match list-I with List- II and select the correct answer using the codes given below the list: List-I (Characteristic) A. Zero mass B. Fractional charge C. Fractional spin D. Integral spin List-II (P…

Consider the following statements regarding matter: 1. Elements cannot be broken down into simpler substances. 2. A compound has variable composition and can be broken down into elements. 3. The solu…

Consider the following statements: 1. The temporary hardness in water is due to the presence of bicarbonates of calcium. 2. The permanent hardness in water is due to the presence of soluble chlorides…

Consider the following statements: Statement I: Studies indicate that carbon dioxide emissions from cement industry account for more than 5% of global carbon emissions. Statement II: Silica-bearing c…

Consider the following : 1. Carbon dioxide 2. Oxides of Nitrogen 3. Oxides of Sulphur Which of the above is/are the emission/ emissions from coal combustion at thermal power plants?