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Bihar Board 12th Chemistry Objective Questions and Answers Bihar Board 12th Chemistry Objective Answers Chapter 12 Aldehydes, Ketones and Carboxylic Acids Question 1. Which of the following structures is not correctly matched ? Answer: (c) Question 2. Which of the following carbonyl compounds is most polar ? Answer: (d) Question 3. Ketones can be obtained … Read more
Bihar Board 12th Maths Objective Questions and Answers Bihar Board 12th Maths Objective Answers Chapter 10 Vector Algebra Question 1. If are the direction cosines of a line, then the value of n is (a) (b) (c) (d) Answer: (a) Question 2. Find the magnitude of vector . (a) √157 (b) 4√11 (c) √213 (d) … Read more
Bihar Board 12th Biology Objective Questions and Answers Bihar Board 12th Biology Objective Answers Chapter 14 Ecosystem Question 1. Term ‘ecosystem’ was coined by (a) Odum (b) Tansley (c) Lindeman (d) Elton. Answer: (b) Tansley Question 2. Which of the following pairs is not correct ? (a) E. Haeckel – Coined the term ‘Ecology’ (b) … Read more
Bihar Board 12th Maths Objective Questions and Answers Bihar Board 12th Maths Objective Answers Chapter 9 Differential Equations Question 1. The order of the differential equation of all tangent lines to the parabola y = x2 is (a) 1 (b) 2 (c) 3 (d) 4 Answer: (a) 1 Question 2. The differential equation of all parabolas … Read more
Bihar Board 12th Physics Objective Questions and Answers Bihar Board 12th Physics Objective Answers Chapter 11 Dual Nature of Radiation and Matter Question 1. Who established that electric charge is quantised ? (a) J.J. Thomson (b) William Crookes (c) R.A Millikan (d) Wilhelm Rontgen Answer: (c) R.A Millikan Question 2. Cathode rays were discovered by … Read more
Bihar Board Class 12th Hindi Book Solutions Bihar Board Class 12th Hindi Book Solutions पद्य Chapter 2 सूरदास के पद सूरदास के पद वस्तुनिष्ठ प्रश्न निम्नलिखित प्रश्नों के बहुवैकल्पिक उत्तरों में से सही उत्तर बताएँ प्रश्न 1. सूरदास का जन्म कब हुआ था? (क) 1478 ई. में (ख) 1470 ई. में (ग) 1475 ई. में … Read more