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CBSE CLASS 10th 2021 : Case Study Questions For Maths & Science

This article will guide you through:

What are case study questions?
Class 10 Case Study question examples
How to get case-based questions for free?
How to attempt the case-based questions?

What are case study questions?

Questions based on case studies are some real-life examples. The questions are asked based on a given paragraph i.e. Case Study. Usually, 4-5 questions are asked on the basis of the given passage. In most cases, these are either MCQs or assertion & reason type questions. Let’s take an example to understand. There is one paragraph on how nitrogen is generated in the atmosphere. On the basis of this paragraph, the board asks a few objective type questions. In other words, it is very similar to the unseen passages given in language papers. But the real cause may be different. So, read this article till the end to understand it thoroughly.

Class 10 Science Case Study Question Examples:

Case-based Question -1

Read the following and answer any four questions:
Salt of a strong acid and strong base is neutral with a pH value of 7. NaCl common salt is formed by a combination of hydrochloride and sodium hydroxide solution. This is the salt that is used in food. Some salt is called rock salts bed of rack salt was formed when seas of bygone ages dried up. The common salt thus obtained is an important raw material for various materials of daily use, such as sodium hydroxide, baking soda, washing soda, bleaching powder.

1. Which of the following does not form an acidic salt?
  1. Phosphoric acid
  2. Carbonic acid
  3. Hydrochloric acid
  4. Sulphuric acid
2. Which of the following salts has no water of crystallization?
  1. Blue vitriol
  2. Washing soda
  3. Baking soda
  4. Gypsum
3. The formula of baking soda is
  1. K₂CO
  2. KHCO₃
  3. NaHCO₃
  4. Na₂CO₃
4. Which of the following is treated with chlorine to obtain bleaching powder
  1. CaSO₄
  2. Ca(OH)₂
  3. Mg(OH)₂
  4. KOH
5. Which of the following salt is used for removing the permanent hardness of water?
  1. Washing soda
  2. Baking soda
  3. Bleaching powder
  4. NaOH

Case-based Question -2

Read the following and answer any four questions:
In resistance for a system of the resistor, there are two methods of joining the resistors together as shown below

It showed an electric current in which 3 resistors having resistor R₁, R₂ and R₃ respectively are join end to end i.e series. While the combination of the resistor in which 3 resistors connected together which points X and Y are said to be parallel.

1. The total potential difference across a combination of a resistor in series is equal to
  1. V₁ + V₂ + V₃
  2. V₁– V₂+V₂
  3. V₁+ V₂
  4. None of these
2. In a series combination of resistor, the current is
  1. same at every point of the circuit
  2. different at every point of the circuit
  3. zero
  4. can not be determined
3. The electrical energy disputed in the resistor is given by
  1. W = VIT
  2. W = VIR
  3. W = RIT
  4. W = RT
4. If 5 resistor, each of value 0.2 ohm are connected in series what will be the resultant resistance
  1. 1 ohm
  2. 10 ohm
  3. 6 ohm
  4. 8 ohm

Case-based Question -3

Read the following and answer any four questions:
In the electrolytic refining of copper. The electrolyte is a solution of acidified copper sulfate. There are an anode and cathode. Refining is carried out by passing an electric current.

1. The anode is ________.
  1. pure strips
  2. impure copper
  3. refined copper
  4. none of these
2. Anode mud consists of:
  1. insoluble impurities
  2. soluble impurities
  3. pure metal
  4. impure metal
3. Which of the following are refined electrolytically: (A) Au, (B) Cu, (C) Zn, (D) K
  1. A and B
  2. B and C
  3. A, B, and C
  4. B, C, and D
4. On passing, electric current Cu is deposited on:
  1. cathode
  2. anode
  3. bottom of cathode
  4. bottom of anode
5. Which one of the following four metals would be displaced from the solution of its salt by the other three metals?
  1. Zn
  2. Mg
  3. Cu
  4. Ag

How to Attempt the Case-Based Questions in Science?

Before answering this question, let’s read the text given:

All living cells require energy for various activities. This energy is available by the breakdown of simple carbohydrates either using oxygen or without using oxygen.

See, there are only two sentences and CBSE is asking you 5 questions based on these two sentences. Now let’s check the first questions given there.

(i) Energy in the case of higher plants and animals is obtained by
a) Breathing
b) Tissue respiration
c) Organ respiration
d) Digestion of food

Now let us know if you can relate the question with the paragraph directly. The two sentences are about energy and how it is obtained. But neither the question nor the options have any similar text in the paragraph.

So the conclusion is, in most cases, you will not get direct answers from the passage. You will get only an idea about the concept. If you know it, you can answer it but reading the paragraph even 100 times is not going to help you.

Case Study based Questions Class 10 Mathematics:

Here is an example of a case study based question for class 10 Mathematics.

Suresh is having a garden near Delhi. In the garden, there are different types of trees and flower plants. One day due to heavy rain and storm one of the trees got broken as shown in the figure. The height of the unbroken part is 15 m and the broken part of the tree has fallen at 20 m away from the base of the tree.
Using the Pythagoras answer the following questions:

What is the length of the broken part?
1. 15 m
2. 20 m
3. 25 m
4. 30 m
What was the height of the full tree?
1. 40 m
2. 50 m
3. 35 m
4. 30 m
In the formed right-angle triangle what is the length of the hypotenuse?
1. 15 m
2. 20 m
3. 25 m
4. 30m
What is the area of the formed right angle triangle?
1. 100 m²
2. 200 m²
3. 60 m²
4. 150 m²
What is the perimeter of the formed triangle?
1. 60 m
2. 50 m
3. 45 m
4. 100 m

Is it Easy or Difficult?

As discussed, all the questions are objective only and most of them are very straightforward questions so, these questions are going to be very easy to solve. Students can score good marks if they practice such questions before the board exams.