Chapter 7: Diversity in Living Organisms
In-Text Questions Solved NCERT Textbook for Class 9 Science – Page 80Question 1. Why do we classify organisms?Answer: For easier and convenient study we classify organisms. Question 2. Give three examples of the range of variations that you…
Chapter 12: Electricity
Question 1A piece of wire of resistance R is cut into five equal parts. These parts are then connected in parallel. If the equivalent resistance of this combination is R’, then the ratio R/R’ is :(a) 125(b) 15(c) 5(d)…
Chapter 11: Human Eye and Colourful World
Question 1The human eye can focus objects at different distances by adjusting the focal length of the eye lens. This is due to(a) presbyopia(b) accommodation(c) near – sightedness(d) far – sightednessAnswer:(b) Accommodation Question 2The human eye forms…
Chapter 9: Force and Laws of Motion
In-Text Questions Solved NCERT Textbook for Class 9 Science – Page 118Question 1. Which of the following has more inertia:(a) a rubber ball and a stone of the same size?(b) a bicycle and a train?(c) a five-rupees…
Chapter 10: Gravitation
In – Text Questions Solved NCERT Textbook for Class 9 Science – Page 141Questin 1. Why is it difficult to hold a school bag having a strap made of a thin and strong string?Answer: The force exerted by…
Chapter 10: Light Reflection and Refraction
Question 1Which one of the following materials cannot be used to make a lens ?(a) Water(b) Glass(c) Plastic(d) ClayAnswer:(d) Clay Question 2The image formed by a concave mirror is observed to be virtual, erect and larger than…
Chapter 11: Work Power and Energy
NCERT Textbook for Class 9 Science – Page 148Q1: A force of 7 N acts on an object. The displacement is, say 8 m, in the direction of the force. Let us take it that the force…
Chapter 9: Heredity and Evolution
Question 1.A Mendelian experiment consisted of breeding tall pea plants bearing violet flowers with short pea plants bearing whfte flowers. The progeny all bore violet flowers, but almost half of them are short. This suggests that the…
Chapter 8: How do Organisms Reproduce?
Question 1Asexual reproduction takes place through budding in(a) amoeba(b) yeast(c) plasmodium(d) leishmaniaAnswer:(b) Yeast Question 2Which of the following is not a part of the female reproductive system in human beings ?(a) Ovary(b) Uterus(c) Vas deferens(d) Fallopian tubeAnswer:(c)…
