• Skip to main content
  • Skip to secondary menu
  • Skip to primary sidebar
  • Skip to footer
  • NCERT Solutions
    • NCERT Books
  • Class 10
  • Class 9
  • Class 8
  • Class 7
  • Class 6
  • Class 11
  • Class 12
  • MCQ Questions
    • CBSE MCQ

Learn Insta

RD Sharma Solutions , RS Aggarwal Solutions and NCERT Solutions

  • Extra Questions
  • CBSE Notes
  • RD Sharma Solutions
    • RD Sharma Class 12 Solutions
    • RD Sharma Class 11 Solutions
    • RD Sharma Class 10 Solutions
    • RD Sharma Class 9 Solutions
    • RD Sharma Class 8 Solutions
  • RS Aggarwal Solutions
    • RS Aggarwal Solutions Class 10
    • RS Aggarwal Solutions Class 9
    • RS Aggarwal Solutions Class 8
    • RS Aggarwal Solutions Class 7
    • RS Aggarwal Solutions Class 6
  • ML Aggarwal Solutions
    • ML Aggarwal Class 10 Solutions
    • ML Aggarwal Class 9 Solutions
    • ML Aggarwal Class 8 Solutions
    • ML Aggarwal Class 7 Solutions
    • ML Aggarwal Class 6 Solutions
  • English Grammar
    • Words with Letters
    • English Summaries
    • Unseen Passages

Value Based Questions in Science for Class 9 Chapter 1 Matter in Our Surroundings

June 19, 2018 by Prasanna

Value Based Questions in Science for Class 9 Chapter 1 Matter in Our Surroundings

These Solutions are part of Value Based Questions in Science for Class 9. Here we have given Value Based Questions in Science for Class 9 Chapter 1 Matter in Our Surroundings.

Question 1.
Mohan was asked by his teacher to determine the boiling point of a liquid. He set up the apparatus as shown in the figure. He recorded the boiling point of the liquid as 140°C and reported the reading to his teacher. The teacher asked him to repeat the experiment after dipping the bulb of the thermometer in the liquid and also placing the beaker on a tripod stand covered with a wire gauze. After reading this narration, answer the following questions:
Value Based Questions in Science for Class 9 Chapter 1 Matter in Our Surroundings image - 1

  1. Was the reading taken by the student correct ?
  2. What was the necessity of wire gauze ?
  3. How did teacher help the student ?
  4. What is the value based information associated with this ?

Answer:

  1. No, it was wrong. The bulb of the thermometer must dip in the liquid.
  2. If the beaker is in direct contact with the flame, it might crack.
  3. Teacher guided the student properly. By direct heating, an accident can occur and can cause serious injuries to the student.
  4. In the laboratory or in the Kitchen, we should never heat glass beakers directly on the flame. These are likely to crack. However, Borocil beakers can be heated on direct flame.

More Resources

  • Value Based Questions in Science for Class 9
  • HOTS Questions for Class 9 Science
  • NCERT Solutions for Class 9 Science
  • NCERT Exemplar Solutions for Class 9 Science
  • Previous Year Question Papers for CBSE Class 9 Science

Question 2.
A student was determining the melting point of ice in the laboratory. The teacher was taking the round. He found that the student was not using any stirrer. Teacher asked him to use a glass stirrer and then determine the melting point of ice.

  1. Is the use of a stirrer necessary during heating ?
  2. What is its purpose ?

Answer:

  1. Yes, it is necessary.
  2. Stirring with a glass stirrer or glass rod provides uniform heating otherwise the results may not be correct.

Question 3.
Ashutosh was getting late for the office. He tried to sip boiling hot coffee from a cup. He felt very uncomfortable. His wife immediately brought a plate and asked him to sip the coffee from the plate. Ashutosh followed her advice and did not face any problem.

  1. Why was Ashutosh feeling uncomfortable ?
  2. How did sipping coffee from a plate was more comfortable ?
  3. How did wife help Ashutosh ?
  4. What is the value associated with it ?

Answer:

  1. Since coffee was very hot, it was not possible for Ashutosh to sip it hurridely. It could burn his tongue.
  2. A plate has more surface area than the cup. Evaporation becomes faster in this case. Since cooling is always caused during evaporation, the temperature got lowered. It became comfortable to sip coffee from a plate,
  3. With the timely help by his wife, Ashutosh could sip coffee quite comfortably and could reach office in time.
  4. We should never drink milk, tea or coffee when these are boiling hot. These are injurious to our throat. It is always better to allow them to cool. In case we are in a hurry, we must place them in a container with large surface area.

Question 4.
During vacation, Neha got an opportunity to visit a village. She found ladies cooking food in open pans. She sat with them for sometime and advised them to use pressure cookers instead of open containers in order to save time as well as fuel.

  1. How does cooking in a pressure cooker help in saving time ?
  2. How does cooking in a pressure cooker help in saving fuel ?
  3. What is the value associated with this gesture of Neha ?

Answer:

  1. Inside the pressure cooker, the temperature gets raised since the pressure is higher than the atmospheric pressure. The cooking becomes fast and this saves time.
  2. Since cooking takes place in lesser time, fuel is always saved.
  3. Neha was quite concerned about the welfare and safety of the villagers. She therefore, gave a very sincere advise.

 

Hope given Value Based Questions in Science for Class 9 Chapter 1 Matter in Our Surroundings are helpful to complete your science homework.

If you have any doubts, please comment below. Learn Insta try to provide online science tutoring for you.

Filed Under: CBSE Class 9

Primary Sidebar

  • Maths NCERT Solutions
  • Science NCERT Solutions
  • Social Science NCERT Solutions
  • English NCERT Solutions
  • Hindi NCERT Solutions
  • Physics NCERT Solutions
  • Chemistry NCERT Solutions
  • Biology NCERT Solutions
RS Aggarwal Solutions RD Sharma Solutions
RS Aggarwal Class 10 RD Sharma Class 10
RS Aggarwal Class 9 RD Sharma Class 9
RS Aggarwal Class 8 RD Sharma Class 8
RS Aggarwal Class 7 RD Sharma Class 11
RS Aggarwal Class 6 RD Sharma Class 12

Recent Posts

  • NCERT Important Extra Questions for Class 6, 7, 8, 9, 10, 11, and 12
  • MCQ Questions for Class 11 Maths Chapter 8 Binomial Theorem with Answers
  • Mechanical Properties of Solids Class 11 Important Extra Questions Physics Chapter 9
  • Selina Concise Mathematics Class 10 ICSE Solutions Chapter 8 Remainder and Factor Theorems Ex 8A
  • MCQ Questions for Class 9 Maths Chapter 2 Polynomials with Answers
  • MCQ Questions for Class 7 Maths Chapter 2 Fractions and Decimals with Answers
  • English Grammar for Class 6, 7, 8, 9, 10, 11 and 12
  • Unscramble Words With Letters | Make Words with These Letters
  • Fractions and Decimals Class 7 Notes Maths Chapter 2
  • MCQ Questions for Class 6 Maths Chapter 8 Decimals with Answers
DMCA.com Protection Status

Footer

CBSE Library
NCERT Library
NCERT Solutions for Class 12
NCERT Solutions for Class 11
NCERT Solutions for Class 10
NCERT Solutions for Class 9
NCERT Solutions for Class 8
NCERT Solutions for Class 7
NCERT Solutions for Class 6
ML Aggarwal Class 10 ICSE Solutions
Concise Mathematics Class 10 ICSE Solutions
CBSE Sample Papers
cbse
ncert
English Summaries
English Grammar
Biology Topics
Microbiology Topics
Chemistry Topics
Like us on Facebook Follow us on Twitter
Watch Youtube Videos Follow us on Google Plus
Follow us on Pinterest Follow us on Tumblr
Percentage Calculator

Copyright © 2022 Learn Insta