MP Board Class 12th Biology Solutions Chapter 12 Biotechnology And its Application Biotechnology And its Application NCERT Text Book Questions and Answers Question 1. Crystals of Bt toxin produced by some bacteria do not kill the bacteria themselves because: (a) Bacteria are resistant to the toxin, (b) Toxin is immature (c) Toxin is inactive (d) … Read more
MP Board Class 12th Biology Solutions Chapter 4 जनन स्वास्थ्य जनन स्वास्थ्य NCERT प्रश्नोत्तर प्रश्न 1. समाज में जनन स्वास्थ्य के महत्व के बारे में अपने विचार प्रकट कीजिए। उत्तर जनन स्वास्थ्य का तात्पर्य जनन के सभी पहलुओं जैसे शारीरिक, भावनात्मक, व्यावहारिक तथा सामाजिक स्वास्थ्य से है। दुनिया में भारत पहला ऐसा देश है जिसने … Read more
MP Board Class 12th Chemistry Solutions Chapter 6 General Principles and Processes of Isolation of Elements General Principles and Processes of Isolation of Elements NCERT Intext Exercises Question 1. Which of the ores mentioned in Table 6-1 ? Can be concentrated by mag-netic separation method ? Answer: Magnetic ores are separated from non-magnetic impurities by … Read more
MP Board Class 12th Biology Solutions Chapter 7 Evolution Evolution NCERT Textbook Questions and Answers Question 1. Explain antibiotic resistance observed in bacteria in light of Darwinism selection theory. Answer: Darwinism theory of natural selection states that environment selects organisms with favourable variations and these organisms thus, survive and reproduce. It is observed when bacterial … Read more
MP Board Class 12th Biology Solutions Chapter 14 Ecosystem Ecosystem NCERT Text Book Questions and Answers Question 1. Fill in the Blanks: 1. Plants are called as …………….. because they fix carbon dioxide. 2. In an ecosystem dominated by trees, the pyramid (of numbers) is ………………… type. 3. In aquatic ecosystem, the limiting factor for … Read more
MP Board Class 12th Biology Solutions Chapter 4 Reproductive Health Reproductive Health NCERT Textbook Questions and Answers Question 1. What do you think is the significance of reproductive health in a society? Answer: Significance of reproductive health in a society are : Control over the transmission of STDs. Less death due to reproduction related diseases … Read more
MP Board Class 12th Biology Solutions Chapter 15 Biodiversity And Conversation Biodiversity and Conversation NCERT Text Book Question and Answers Question 1. Name the three important components of biodiversity. Answer: Three important components of biodiversity are : Genetic diversity. Species diversity. Ecosystem diversity. Question 2. How do ecologists estimate the total number of species present … Read more
MP Board Class 12th Biology Solutions Chapter 3 Human Reproduction Human Reproduction NCERT Textbook Questions and Answers Question 1. Fill in die Blanks: Humans reproduce …………………….. (asexually/ sexually) Humans are …………………….. (oviparous, viviparous, ovoviviparous) Fertilization is …………………….. in humans, (external / internal) Male and female gametes are …………………….. (diploid / haploid) Zygote is …………………….. (diploid … Read more
MP Board Class 12th Chemistry Solutions Chapter 5 Surface Chemistry Surface Chemistry NCERT Intext Exercises Question 1. Why are substance like platinum and palladium used for carrying electrolysis of aqueous solutions ? Answer: These metals are not attacked by the ions of the electrolytes or the products of electrolysis. Electrodes of such metals are called … Read more
MP Board Class 12th Biology Solutions Chapter 16 Environmental Issues Environmental Issues NCERT Textbook Question and Answers Question 1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Answer: Domestic sewage are the waste originating from the kitchen, toilet, laundry and other sources. They contain impurities such … Read more
MP Board Class 12th Biology Solutions Chapter 2 Sexual Reproduction in Flowering Plants Sexual Reproduction in Flowering Plants NCERT Textbook Questions and Answers Question 1. Name the parts of an angiosperm flower in which development of male and female gametophyte take place. Answer: Development of male gametophyte takes place in anther and female gametophyte in ovary. … Read more
MP Board Class 12th Biology Solutions Chapter 1 Reproduction in Organisms Reproduction in Organisms NCERT Textbook Questions and Answers Question 1. Why is reproduction essential (neccessary) for organisms? Answer: An organism gives rise to young ones by reproduction. The offspring grow, mature and in turn produce new offspring. Thus, there is a cycle of birth, … Read more
MP Board Class 12th Chemistry Solutions Chapter 4 Chemical Kinetics Chemical Kinetics NCERT Intext Exercises Question 1. For the reaction R → P, the concentration of reactant changes from 0.03M to 0.02M in 25 minutes. Calculate the average rate of reaction using units of time both in minutes and seconds. Answer: For the reaction R … Read more
MP Board Class 12th Chemistry Solutions Chapter 3 Electrochemistry Electrochemistry NCERT Intext Exercises Question 1. How would you determine the standard electrode potential of the system Mg2+ | Mg ? Answer: can be determined by forming a cell with standard hydrogen electrode (SHE). Mg(s) | Mg2+ 1 M || H+g | H2 (1 atm) Pt. … Read more
MP Board Class 12th Chemistry Solutions Chapter 1 The Solid State The Solid State NCERT Intext Exercises Question 1. Why are solids rigid ? Answer: Solids are rigid due to presence of strong inter- molecular forces between the constituent particles. Question 2. Why do solids have a definite volume ? Answer: In solids, the constituent … Read more