Toppers Study Toppers Study Toppers StudyGet complete NCERT Solutions for 9 Science 1. Matter in Our Surroundings with detailed explanations. Easy-to-understand answers to help students study effectively and score better.
Get complete NCERT Solutions for 9 Science 1. Matter in Our Surroundings with detailed explanations. Easy-to-understand answers to help students study effectively and score better.
Preparing for exams becomes easier with Additional -Questions 2. Whether you are studying for board exams or mid-term exams, 9 Science Chapter 1. Matter in Our Surroundings solutions provide quick revising points, well-structured answers, and additional practice material to help you score better.
ncert_solutionsQ1. The mass per unit volume of a substance is called density.
(density = mass/volume).
Arrange the following in order of increasing density –
air, exhaust from chimneys, honey, water, chalk, cotton and iron.
Q2. (a) Tabulate the differences in the characterisitcs of states of matter.
(b) Comment upon the following: rigidity, compressibility, fluidity, filling a gas container, shape, kinetic energy and density.
Q3. Give reasons
(a) A gas fills completely the vessel in which it is kept.
(b) A gas exerts pressure on the walls of the container.
(c) A wooden table should be called a solid.
(d) We can easily move our hand in air but to do the same through a solid block of wood we need a karate expert.
Q4. Liquids generally have lower density as compared to solids. But you must have observed that ice floats on water. Find out why?
Q1. Convert the following temperature to celsius scale:
a. 300 K b. 573 K.
Q2. What is the physical state of water at:
a. 250ºC b. 100ºC
Q3. For any substance, why does the temperature remain constant during the change of state?
Q4. Suggest a method to liquefy atmospheric gases.
Q1. Why does a desert cooler cool better on a hot dry day?
Q2. How does the water kept in an earthen pot (matka) become cool during summer?
Q3. Why does our palm feel cold when we put some acetone or petrol or perfume on it?
Q4. Why are we able to sip hot tea or milk faster from a saucer rather than a cup?
Q5. What type of clothes should we wear in summer?
Q1. Convert the following temperatures to the Celsius scale.
(a) 300 K (b) 573 K.
Q2. Convert the following temperatures to the Kelvin scale.
(a) 25°C (b) 373°C.
Q3. Give reason for the following observations.
(a) Naphthalene balls disappear with time without leaving any solid.
(b) We can get the smell of perfume sitting several metres away.
Q4. Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.
Q5. What is the physical state of water at—
(a) 25°C (b) 0°C (c) 100°C ?
Q6. Give two reasons to justify—
(a) water at room temperature is a liquid.
(b) an iron almirah is a solid at room temperature.
Q7. Why is ice at 273 K more effective in cooling than water at the same temperature?
Q8. What produces more severe burns, boiling water or steam?
Q9. Name A,B,C,D,E and F in the following diagram showing change in its state
Additional -Questions 2 are created by experts to give step-by-step explanations. Around 60–70% of exam questions are based on NCERT concepts. Our 9 Science Chapter 1. Matter in Our Surroundings solutions help you understand the core concepts and practice effectively.
Revision is the key to exam success. Our notes for 9 Science highlight important formulas, key definitions, and exam-ready points from Chapter 1. Matter in Our Surroundings. These quick revision notes make last-minute preparation easy.
Every NCERT chapter ends with exercises, and solving them is crucial. Our Additional -Questions 2 include complete solutions for 9 Science Chapter 1. Matter in Our Surroundings exercises. With step-by-step answers, you gain clarity and confidence to attempt similar exam questions.
To boost your preparation, we also provide additional important questions with answers. These are prepared from previous year board papers, sample papers, and important concepts of Chapter 1. Matter in Our Surroundings. Practicing these ensures you are well-prepared for both board and mid-term exams.
Our Additional -Questions 2 are useful for both board exams and mid-term exams. For 9 Science, we provide notes, exercises, and important Q&A so that you can revise smartly and write perfect answers in exams.
In short, Additional -Questions 2 for 9 Science Chapter 1. Matter in Our Surroundings are a complete study package. With quick revising points, NCERT exercises, and additional important questions, you can prepare effectively for exams. Make these solutions your study companion and excel in your academic journey.
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