1. The major components in "Gun Metal" are: (a) Cu, Ni and Fe (b) Al, Cu, Mg and Mn (c) Cu, Sn and Zn 2. 3. Which of the following ore is concentrated using group 1 cyanide salt (a) Calamine (b) Sphalerite (c) Siderite In Freundlich adsorption isotherm, slope of AB line is: (d) Cu, Zn and Ni Siderite (d) A (d) Malachite log E (a) with 0.5) 4. A B log P = 0 to n to 1) (b) log n with (n> 1) 1 n (c) log-with(n <1) (d) n with (n, 0.1 to Match List with List II. List I (Monomer Unit) (a) Caprolactum (b) 2-Chloro-1, 3-butadiene (c) Isoprene (d) Acrylonitrile List II (Polymer) (i) Natural rubber (ii) Buna-N (iii) Nylon 6 (iv) Neoprene Choose the correct answer from the options given below: (a) (a)(iii), (b)(iv), (c)(i), (d) (ii) (b) (a)(iv), (b)(iii), (c)(ii), (d) (i) 5. (c) (a)(ii), (b)(i), (c) (iv), (d) (iii) (d) (a)(i), (b)(ii), (c) (iii), (d) (iv) What is the correct order of the following elements with respect to their density? (a) Zn < Cr