The introduction of case-based questions within the CBSE board exam 2021 pattern for classes 10, 11, and 12 is perhaps within the best interest of scholars . These questions although appear to be like classic passage-based questions that the majority folks are conversant in within the curriculum but they’re considerably different within the sense that these questions would require you to link the given case together with your topic within the respective chapter then answer based upon your understanding.
How to attempt these questions?
One must remember to not find the solution s directly within the given passage but also think efficiently to derive the answer.
Case based questions are either MCQs or Assertion Reason Questions, so for attempting such questions you want to follow the rule of elimination.
Eliminate the choices which you think that can’t be the solution to the given question. This increases your chance of being right.
Do not be impulsive once you see the choice which is in your mind. It’s better to over other options also .
How to steel oneself against these questions?
Preparation of those questions requires you to review NCERT textbooks line by line ensuring that you simply have proper knowledge of every and each topic that’s there in your curriculum. Any case-based question that appears within the board exam will always be linked to at least one or the opposite topic from the textbook. Covering all topics will offer you confidence in such questions.
Following is an example of a case-based question for students of classes 10, 11, 12:
“The word organic means concerning life. In early times, people considered a substance like sugar, protein can only be obtained from living organisms like plants and plants. So, they called such substances as organic compounds and handling them was named .”
Also, as there was no known method of preparing them in laboratory at that point so it had been believed that there was some “vital force” of nature which will produce such compounds.
“The life force theory was disproved when, in 1828, a Scientist F. Wohler synthesised the primary compound urea in lab process. So, the old concept of was given, and it had been accepted that is that the study of Hydrocarbons and it’s derivatives.”
For questions no 1 to 2, two statements are given one labelled Assertion (A) and therefore the other labelled Reason (R). Select the right answer to those questions from the codes (i), (ii), (iii) and (iv) as given below:
i. Both Assertion (A) and Reason (R) are correct statements, and Reason (R) is that the correct explanation of the Assertion (A).
ii. Both Assertion (A) and Reason (R) are correct statements, but Reason (R) isn’t the right explanation of the Assertion (A).
iii. Assertion (A) is correct, but Reason (R) is wrong statement.
iv. Assertion (A) is wrong , but Reason (R) is correct statement.
1. ASSERTION(A) – is that the study of compounds derived from plant and animal sources.
REASON(R) – Organic means concerning life.
2. ASSERTION – Although CO2 , carbonates and Bicarbonates are carbon compounds, but they’re not studied under .
REASON- is study of Natural compounds.
1(iv). is study of hydrocarbons and its derivatives. Tip : If you had just studied first paragraph and attempted this question, your answer would are (ii) and it might are wrong. because it is mentioned in third paragraph that earlier theories were discarded therefore the old concept isn’t true anymore.
2(iii). If you’re taking a glance at assertion, this statement isn’t there within the given passage. But this doesn’t make it false. Here, you’ve got to use your own knowledge to unravel this question. Carbonates and oxides are studied in . includes study of Hydrocarbons like methane and their derivatives like acetic acid , etc.
So, proper knowledge, patience, practice, and preparation will assist you through case-based questions within the final examination . confirm you undergo a spread of such questions before taking the exam. Good Luck!