4. Brass is an alloy of which of the following pairs of - TopicsExpress



          

4. Brass is an alloy of which of the following pairs of metals? (1) Aluminum and Copper (2) Chromium and Tin (3) Copper and Tin (4) Copper and Zinc Ans. (4) 5. Which one of the following bacteria helps in improving the soil fertility? (1) Clostridium (2) Rhizobium (3) Salmonella (4) Staphylococcus Ans. (2) 6. Consider the following statements: 1. In a person suffering from Myopia, the image of a distant object is formed behind the retina. 2. Myopia can be corrected by using a concave lens. Which of the above statements is/are correct ? (1) l only (2) 2 only (3) Both land 2 (4) Neither 1 nor 2 Ans. (2) 7. Match List-I with List-II and select the correct answer using the code given below the lists: List-I List -II (Theory/Law/Principle) (Scientist) A. Electromagnetism 1.Darwin B. Principles of Inheritance 2. Faraday C. Laws of Inertia 3.Mendel D. Theory of Natura1 Selection 4. Newton Codes: (a) (b) (c) (d) (1) 1 4 3 2 (2) 2 3 4 1 (3) 1 3 4 2 (4) 2 4 3 1 Ans. (2)
Posted on: Sat, 30 Nov 2013 17:58:43 +0000

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