Bihar Board 12th Chemistry Objective Questions and Answers Bihar Board 12th Chemistry Objective Answers Chapter 4 Chemical Kinetics Question 1. When a chemical reaction takes place, during the course of the reaction the rate of reaction (a) keeps on increasing with time (b) remains constant with time (c) keeps on decreasing with time (d) shows … Read more
Bihar Board 12th Physics Objective Questions and Answers Bihar Board 12th Physics Objective Answers Chapter 14 Semiconductor Electronics: Materials, Devices and Simple Circuits Question 1. At absolute zero, Si acts as a (a) metal (b) Semiconductor (c) insulator (d) None of these Answer: (c) insulator Question 2. In good conductors of electricity the type of … Read more
Bihar Board 12th Biology Objective Questions and Answers Bihar Board 12th Biology Objective Answers Chapter 5 Principles of Inheritance and Variation Question 1. The colour based contrasting traits in seven contrasting pairs, studied by Mendel in pea plant were (a) 1 (b) 2 (c) 3 (d) 4 Answer: (c) 3 Question 2. _________ pairs of … Read more
Bihar Board 12th Economics Model Papers Bihar Board 12th Economics Model Question Paper 5 in English Medium Time : 3 Hour. 15 Min Full Marks : 100 Instructions Candidates are required to give their answers in their own words as far as practicable. Figures in the right hand margin indicate full marks. 15 minutes of … Read more
Bihar Board 12th Physics Objective Questions and Answers Bihar Board 12th Physics Objective Answers Chapter 3 Current Electricity Question 1. 1 ampere current is equivalent to (a) 6.25 × 1018 electrons s-1 (b) 2.25 × 1018 electrons s-1 (c) 6.25 × 1014 electrons s-1 (d) 2.25 × 1014 electrons s-1 Answer: (a) 6.25 × 1018 … Read more
Bihar Board 12th Physics Objective Questions and Answers Bihar Board 12th Physics Objective Answers Chapter 15 Communication Systems Question 1. Who invented world wide web? (a) J.C.R. Licklider (b) Tim Berners-Lee (c) Alexander Graham Bell (d) Samuel F.B. Morse Answer: (b) Tim Berners-Lee Question 2. Essential elements of a communication system are (a) transmitter and … Read more
Bihar Board 12th Biology Objective Questions and Answers Bihar Board 12th Biology Objective Answers Chapter 4 Reproductive Health Question 1. RCH stands for (a) routine check-up of health (b) reproduction cum hygiene (c) reversible contraceptive hazards (d) reproductive and child health care. Answer: (d) reproductive and child health care. Question 2. Amminocentesis is a technique … Read more
Bihar Board 12th Maths Model Papers Bihar Board 12th Maths Model Question Paper 4 in English Medium Time : 3 Hours 15 Min Full Marks: 100 Instructions for the candidates : Candidates are required to give their answers in their own words as far as practicable. Figure in the right-hand margin indicates full marks. While … Read more
Bihar Board 12th Maths Objective Questions and Answers Bihar Board 12th Maths Objective Answers Chapter 3 Matrices Question 1. Answer: (b) Question 2. The matrix A = is a (a) unit matrix (c) symmetric matrix (b) diagonal matrix (d) skew-symmetric matrix Answer: (d) skew-symmetric matrix Question 3. If , then the values of x, y, … Read more
Bihar Board 12th Economics Model Papers Bihar Board 12th Economics Model Question Paper 4 in English Medium Time : 3 Hour. 15 Min Full Marks : 100 Instructions Candidates are required to give their answers in their own words as far as practicable. Figures in the right hand margin indicate full marks. 15 minutes of … Read more
Bihar Board 12th Biology Objective Questions and Answers Bihar Board 12th Biology Objective Answers Chapter 3 Human Reproduction Question 1. Temperature of the scrotum which is necessary for the functioning of testis is always __________ around below body temperature. (a) 2°C (b) 4°C (c) 6°C (d) 8°C Answer: (a) 2°C Question 2. Which of the … Read more