Ans. Nucleus is located in the center of the cell. It is the main cell organelle and controls all the activities of cell. A membrane having pores surrounds
CLASS-9 SCIENCE EXTRA QUESTIONS. CHAPTER 9 - FORCE AND LAWS OF MOTION. MCQ QUESTIONS. 1. Which of the following statement is not correct for an object moving
CLASS-9 SCIENCE EXTRA QUESTIONS. Chapter 10 - Gravitation. MCQ QUESTIONS. 1. Two objects of different masses falling freely near the surface of moon would. (a)
CLASS-9 SCIENCE EXTRA QUESTIONS. CHAPTER 1 - MATTER IN OUR SURROUNDINGS. MCQ QUESTIONS. 1. Which of the following are also considered to be the states of
CLASS-9 SCIENCE EXTRA QUESTIONS. CHAPTER 4 - STRUCTURE OF THE ATOM. MCQ 9. The ion of an element has 3 positive charges. Mass number of the atom is 27 and ...
CLASS-9 SCIENCE EXTRA QUESTIONS. Chapter 11 - Work and Energy. MCQ QUESTIONS. 1. When a body falls freely towards the earth then its total energy. (a)
CLASS-9 SCIENCE EXTRA QUESTIONS. Chapter 8 MOTION. MCQ QUESTIONS. 1. A particle is moving in a circular path of radius r. The displacement after half a circle.
The conversion by certain soil microorganisms such as rhizobia
CLASS-9 SCIENCE EXTRA QUESTIONS. Chapter 13 - Why Do We Fall ill. MCQ QUESTIONS. 1. Which one of the following is not a viral disease? (a) Dengue. (b) AIDS. (c)
Manure is less rich in plant nutrient in comparison to fertilizers. Page 9. 9. 5. Fertilizers are compounds given to plants to promote
CLASS-9 SCIENCE EXTRA QUESTIONS