Biology 12 Principles of Inheritance and Variation Chapter 5

Q.1. Mention the advantages of selecting pea plant for experiment by Mendel. Ans. Mendel selected pea plant because of the following special feature : Garden peas were found to differ in certain definite and easily detectable traits. The traits of each kind of pea plant were presented in generation after generation because the plants had […]

NCERT Physics 12 Electrostatic Potential and Capacitance Chapter 2 Exercise

Physics class 12 electrostatic potential and capacitance chapter 2 solution is here in this website. Also you can download sample paper from NCERT physics class 12. NCERT Physics 12 Electrostatic Potential and Capacitance Chapter 2 Exercise Q.1. Two charges 5  10-8  C and -3  10-8 C are located 10  cm apart. At what points on […]

Biology Reproductive Health Chapter 4 – Exercise

Biology Reproductive Health Chapter 4 – Exercise – NCERT Biology reproductive health exercise completed here read them carefully and these are useful for cbse 12 board exams and other competitive exams. Q.1. what do you think is the significance of reproductive health in a society. ans. Rapidly expanding human population, particularly,  in the developing countries […]

Biology 12 Environmental Issues Chapter 15 – Exercise

Q 1. What are the various constituents of domestic sewage? Discuss the effects of sewage discharge on a river. Ans 1. The domestic waste contains everything that down the drain into the sewer of the house. Suspended solids are soil particles (sand and silt), inorganic colloidal particles (e.g., clay) and organic colloidal matter (faecal matter, […]

NCERT 12 Physics Dual Nature Of Radiation And Matter Chapter 11 Exercise

Q.1. find the (a) maximum frequency and (b) minimum wave-length of X- rays produced by 30 KV electrons. Given, h = 6.6310-34 Js. Q.2. the work function of caesium metal is 2.14 eV. When light of frequency 6⨯1014 Hz is incident on the metal surface, photoemission of electrons occurs. What is the (a) maximum kinetic […]

NCERT 12 Maths Solutions of Inverse Trigonometric Functions – Chapter 2 (Ex.2.1)

NCERT 12 Maths Inverse Trigonometric Functions – Chapter 2 (Ex.2.1), NCERT Class 12 maths chapter 2 solutions. Direction (Q. No. 1 to 10) Find the principal values of the following questions. Direction (Q. Nos. 11 to 14) Find the values of the following questions: Direction (Q. Nos. 11 to 14) Find the values of the […]

NCERT Physics 12 Electrostatic Charges and Fields Chapter 1 – Exercise

NCERT physics class 12 chapter 1 all important questions and solutions are here, check the details of MCQ questions physics class 10th, cbse class 12 important questions pdf. Below we have also given, long answer type questions and solutions for each pdf. NCERT Physics 12 Electrostatic Charges and Fields Chapter 1 – Exercise Q.1. What […]

chemistry 12 solid state chapter 1 – exercise 1

CHEMISTRY NCERT EXERCISES WITH ANSWERS Q – 1.1 Why are solids rigid? Ans. In a solid, the constituent particles are very closely packed. Hence, the forces of attraction among these particles are very strong. Moreover, the constituent particles in solid have fixed position and can only oscillate about their mean positions. Hence, they are rigid. […]

Biology Human Reproduction Chapter 3 – Exercise

Q.1 Fill in the blanks: (a) Humans reproduce …………. (asexually/sexually) (b) Humans are …………. (oviparous/viviparous/ovoviviparous) (c) Fertilization is …………. in humans (external/internal) (d) Male and female gametes are …………. (diploid/haploid) (e) Zygote is …………. (diploid/haploid) (f) The process of release of ovum from mature follicle is called …………. (g) Ovulation is induced by a hormone […]

Biology 12 Strategies for Enhancement in Food Production Chapter 9 – Exercise

Strategies for Enhancement in Food Production Chapter 9 – Exercise Q 1. Explain in brief the role of animal husbandry in human welfare. Ans 1. Animal husbandry includes feeding, breeding and raising animals livestock whose primary purpose is to provide milk and meat. Milk is considered as the ‘most nearly perfect’ food for human consumption […]

NCERT 12 Chemistry General Principles and Processes Of Isolation of Elements Chapter 6 Exercise 2

Q.6.1. Which of the ores mentioned in Table 6.1 page 6/2 can be concentrated by magnetic separation method ? Ans. Ores which are magnetic in nature can be separated from the non-magnetic gangue particles by magnetic separation. For example, ores of iron such as haematite (haematite (Fe2O3), magnetite ( FeCO3) and iron pyrites(FeS3) being magnetic […]

NCERT Biology 12 Evolution chapter 7 – Exercise

Biology 12 Evolution chapter 7 – Exercise Q 1. Explain antibiotic resistance observed in bacteria in light of Darwinian selection theory. Ans 1. When a bacterial population encounters a particular antibiotic, those sensitive to it die. One or few bacteria having mutations which make them resistant to antibiotic, survive. Such resistant bacteria multiply quickly as […]

NCERT 12 Chemistry Surface chemistry Chapter 5 exercises 1

Q – 5.1. Why are substances like platinum and palladium often used for carrying out electrolysis of aqueous solution? Ans. Platinum and palladium form inert electrodes, i.e., they are not attacked by the ions of the electrolyte or the products is an electrolysis. Hence, they are used as electrodes for carrying out the electrolysis. Q […]

NCERT 12 Physics Magnetism And Matter Chapter 5 Exercise

Q.1. Answer the following questions regarding earth’s magnetism. (a) A vector needs three quantities for its specification. Name the three independent quantities conventionally used to specify the earth’s magnetic field. (b) The angle of dip at a location in southern India is about 180. Would you expect a grater or lesser dip angle in Britain […]

Biology Sexual Reproduction in Flowering Plants Chapter 2 – Exercise

Biology Sexual Reproduction in Flowering Plants Chapter 2 – Exercise : NCERT solutions of Biology chapter 2 exercises. We mentioned all important questions below check them, Or you can just directly download question paper. But you will get solutions in this page only. So you can book mark this page and you will find it easily. […]