CBSE Class 11 Chemistry VBQs Basic Concepts Of Chemistry

CBSE Class 11 Chemistry VBQs Basic Concepts of Chemistry. Value based questions are very important and always form part of examinations and class tests. Students are requested to download the VBQs and practice them to get better marks in examinations. 

CLASS –XI

VALUE BASED QUESTIONS WITHOUT ANSWERS

UNIT – 1 (BASIC CONCEPTS OF CHEMISTRY)

Question 1 Two friends Riya and Pooja were discussing that which is better for expressing the concentration of a solution: Molality or Molarity ?Pooja told Riya that Molality is considered better for expressing the concentration as compared to Molarity and explained the reason as well.

(i) What would be the explanation of Pooja?

(ii) What are the units of molarity & molality?

(iii) What is the difference between molality & molarity?

Question 2. Mohan learnt the term mol in his chemistry class. He discussed the term mol with her elder sister Anshika. Anshika explained about and then Mohan got satisfied.

(i) What was the probable answer given by Anshika ?

(ii) What for term mol stands?

(iii) What values are associated with Anshika?

Question 3. Radhika ,Supriya and Hema were asked by the PGT chemistry to find the mass of a metal piece independently one by one using the same balance and same weight box. Each student was asked to take three observations. The students reported their result as shown in the following table: 

class_11_chemistry_vbq_6

If the actual mass of the metal piece is 1.325g and the permitted uncertainty in the measurement is 0.001g, answer the following questions:

(i) Whose measurement is both accurate and precise? Justify your answer.

(ii) Whose measurement is precise and not accurate Justify your answer?

(iii) Whose measurements are neither accurate nor precise? Justify your answer.

(iv)  Mention the associated value or values with these observations.

 Please click the link below to download CBSE Class 11 Chemistry VBQs Basic Concepts of Chemistry.

Tags: 

 


Click to View or Download pdf file
Click for more Chemistry Study Material

Latest NCERT & CBSE News

Read the latest news and announcements from NCERT and CBSE below. Important updates relating to your studies which will help you to keep yourself updated with latest happenings in school level education. Keep yourself updated with all latest news and also read articles from teachers which will help you to improve your studies, increase motivation level and promote faster learning

Live session by CBSE Experts for holistic wellbeing

CBSE and Fit India Mission have collaborated to provide live sessions by experts covering a range of topics for holistic well-being of school going children, which will include simple actionable tips around Basic Exercises, Nutrition, Yoga & Meditation, boosting...

Board Exams Class 10 and Class 12 Datesheet 2020

CBSE has announced the datesheet for the remaining exams of class 10 and class 12 exams. The exams are going to start in July. The class 10 and 12th board exams will be conducted for the remaining 29 papers from July 1 to July 15, 2020, at various centers nominated by...

CBSE Board Results for Class 10 and Class 12

Anticipated CBSE result 2020 Date and Time: This is all you wish to know! Here is the news which all students are waiting for. The expected date and time for the CBSE Class X and XII Results 2020 can be viewed here by the students. CBSE Result 2020: The Central Board...

Important announcement regarding rescheduling of Class 10 and 12 Board Exams

CBSE Board Exams 2020: Here's when Board will organize the CBSE Class X and Class XII Board Exams. All the candidates appearing for CBSE Standard X and Standard XII Board Exams 2020 can cross check the essential notice released by the board concerning rearrangement of...

Checking of Boards Answer sheets starts today

CBSE has instructed almost 3000 schools to start the evaluation work for class 10th and class 12th board exam answer sheets from today. The checking of answer sheets for class 10th and class 12th was stopped earlier due to covid crisis in the country. Now in order to...

Class 10 Board Exams to be held

The CBSE board has announced that there is no change in the decision of conducting the CBSE board exams for the 29 subjects, which were canceled due to coronavirus crisis. So when the lockdown gets relaxed completely, the board will conduct the exams for the students,...

×
Studies Today