# Category Class 12

## Bihar Board 12th Maths Objective Answers Chapter 7 Integrals

Bihar Board 12th Maths Objective Questions and Answers Bihar Board 12th Maths Objective Answers Chapter 7 Integrals Question 1. Evaluate: ∫(2tan x – 3cot x)2 dx (a) -4tan x – 9cot x – 25x + C (b) 4tan x –…

## Bihar Board 12th Hindi 50 Marks Model Question Paper 1

Bihar Board 12th Hindi Model Papers Bihar Board 12th Hindi 50 Marks Model Question Paper 1 समय 1 घंटे 37.5 मिनट पूर्णांक 50 परीक्षार्थियों के लिए निर्देश परीक्षार्थी यथा संभव अपने शब्दों में उत्तर दें। दाहिनी ओर हाशिये पर दिये…

## Bihar Board 12th Physics Objective Answers Chapter 8 Electromagnetic Waves

Bihar Board 12th Physics Objective Questions and Answers Bihar Board 12th Physics Objective Answers Chapter 8 Electromagnetic Waves Question 1. Maxwell in his famous equations of electromagnetism introduced the concept of (a) ac current (b) displacement current (c) impedance (d)…

## Bihar Board 12th Chemistry Objective Answers Chapter 11 Alcohols, Phenols and Ethers

Bihar Board 12th Chemistry Objective Questions and Answers Bihar Board 12th Chemistry Objective Answers Chapter 11 Alcohols, Phenols and Ethers Question 1. IUPAC name of (a) 3-propylbutan-l-ol (b) 2-ethylpentan-l-ol (c) 3-methyl hydroxyhexane (d) 2-ethyl-2-propyl ethanol Answer: (a) 3-propylbutan-l-ol Question 2.…

## Bihar Board 12th Physics Objective Answers Chapter 7 Alternating Current

Bihar Board 12th Physics Objective Questions and Answers Bihar Board 12th Physics Objective Answers Chapter 7 Alternating Current Question 1. Alternating voltage (V) is represented by the equation (a) V(t)=Vmewt (b) V(t) = Vm sinωt (c) V(t) = Vm cosωt…

## Bihar Board 12th English 100 Marks Model Question Paper 2

Bihar Board 12th English Model Papers Bihar Board 12th English 100 Marks Model Question Paper 2 Time 3 Hrs, 15 Minutes Full Marks: 100 Instructions Candidates are required to give their answers in their own words as for as practicable.…

## Bihar Board 12th Chemistry Objective Answers Chapter 8 The d-and f-Block Elements

Bihar Board 12th Chemistry Objective Questions and Answers Bihar Board 12th Chemistry Objective Answers Chapter 8 The d-and f-Block Elements Question 1. General electronic configuration of transition metals is (a) (n – 1)d 1–10 ns2 (b) nd10 ns2 (c) (n-1)d10…

## Bihar Board 12th Biology Objective Answers Chapter 13 Organisms and Populations

Bihar Board 12th Biology Objective Questions and Answers Bihar Board 12th Biology Objective Answers Chapter 13 Organisms and Populations Question 1. Refer to the given flow chart. Identify X and select the correct option. (a) Communities (b) Biospheres (c) Biomes…

## Bihar Board Class 12th Hindi Book Solutions गद्य Chapter 2 उसने कहा था

Bihar Board Class 12th Hindi Book Solutions Bihar Board Class 12th Hindi Book Solutions गद्य Chapter 2 उसने कहा था उसने कहा था वस्तुनिष्ठ प्रश्न निम्नलिखित प्रश्नों के बहुवैकल्पिक उत्तरों में से सही उत्तर बताएँ प्रश्न 1. चन्द्रधर शर्मा ‘गुलेरी’…

## Bihar Board 12th Biology Objective Answers Chapter 12 Biotechnology and its Applications

Bihar Board 12th Biology Objective Questions and Answers Bihar Board 12th Biology Objective Answers Chapter 12 Biotechnology and its Applications Question 1. All are the biotechnological applications in order to increase food production except (a) apiculture (b) agro-chemical based agriculture…

## Bihar Board 12th Physics Objective Answers Chapter 10 Wave Optics

Bihar Board 12th Physics Objective Questions and Answers Bihar Board 12th Physics Objective Answers Chapter 10 Wave Optics Question 1. The idea of secondary wavelets for the propagation of a wave was first given by (a) Newton (b) Huygens (c)…