Match the chemical elements in Column-I with their respective valency in Column-II: Column-I (Element): a. Silicon b. Fluorine c. Aluminium d. Sulphur Column-II (Valency): i. 1 ii. 2 iii. 3 iv. 4 Select the correct answer using the codes given below:

Match List-I (Symbol of Element) with List-II (Group of Element): A. Sm - 1. Transition Elements; B. Cs - 2. Alkali Metals; C. Os - 3. Actinoid Elements; D. Np - 4. Lanthanoid Elements. Codes:

Consider the following statements with respect to noble metals : 1. Noble metals are found in pure form in nature. 2. Uranium and lead are examples of noble metal. Which of the above statements is ar…

Which one of the following is the correct order of the valencies of elements Ne, Si, N and Mg?

Which one among the following are the correct symbols for the elements gold, tin and lead, respectively?

Consider the following statements: Statement I: Some rare earth elements are used in the manufacture of flat television screens and computer monitors. Statement II: Some rare earth elements have phos…