Solved NCERT Questions For Class 6 Maths Chapter 12 In Hindi - Free PDF
FAQs on NCERT Solutions For Class 6 Maths Chapter 12 Ratio And Proportion in Hindi - 2025-26
1. How can I use the NCERT Solutions for Class 6 Maths Chapter 12 to solve problems from Exercise 12.1?
The NCERT Solutions for Exercise 12.1 guide you on how to correctly set up and find ratios. The key steps emphasised in the solutions are:
- Identifying the two quantities to be compared.
- Ensuring both quantities are in the same units before forming a ratio.
- Writing the ratio in its fractional form (a/b) and then simplifying it to its lowest terms.
2. What is the correct method to check if two ratios are in proportion, as explained in the solutions for Chapter 12?
To check if two ratios, say a:b and c:d, are in proportion, you must verify if the product of the extremes equals the product of the means. This is the standard method used in NCERT Solutions.
- Extremes are the first and fourth terms (a and d).
- Means are the second and third terms (b and c).
3. How is the unitary method from NCERT Class 6 Maths Chapter 12 used to solve problems?
The unitary method is a technique to solve problems by first finding the value of a single unit. The step-by-step process detailed in the solutions for Exercise 12.3 is:
1. First, find the value of one unit by dividing the total value by the number of units.
2. Then, multiply the value of one unit by the number of units you need to find.
For example, if the cost of 5 pens is Rs. 50, the cost of 1 pen is Rs. 50 ÷ 5 = Rs. 10. The cost of 7 pens would be Rs. 10 × 7 = Rs. 70.
4. Why is it important to simplify a ratio to its lowest form when solving problems in Chapter 12?
Simplifying a ratio to its lowest form is a crucial step for two main reasons:
1. Standardisation: It provides a single, standard answer. For instance, the ratios 50:100, 5:10, and 1:2 all represent the same relationship, but 1:2 is the simplest and standard form.
2. Comparison: Simplified ratios are much easier to compare. It's simpler to determine if 1:2 is equal to 3:4 than to compare 50:100 and 75:100. The NCERT solutions consistently show this final simplification step for clarity and full marks.
5. How many exercises are there in NCERT Class 6 Maths Chapter 12, and what does each one cover?
NCERT Class 6 Maths Chapter 12, Ratio and Proportion, contains three exercises, each focusing on a specific concept. The solutions are structured accordingly:
- Exercise 12.1: Focuses on the basics of finding ratios between different quantities and simplifying them.
- Exercise 12.2: Deals with the concept of proportion and methods to check if given ratios are proportional.
- Exercise 12.3: Covers the application of the unitary method to solve practical, real-world problems.
6. What is a common mistake to avoid when setting up a proportion for a word problem in Chapter 12?
A very common mistake is incorrectly ordering the terms in the proportion. The order of quantities in the first ratio must match the order in the second ratio. For example, if you are setting up a ratio of cost to quantity (e.g., Rs. 10 : 2 pens), the second ratio must also be in the cost to quantity format (e.g., Rs. 50 : 10 pens). Mixing the order like (cost : quantity :: quantity : cost) will lead to an incorrect solution.
7. How do the NCERT Solutions help in understanding the difference between a ratio and a proportion?
The NCERT Solutions clarify this by demonstrating their distinct roles:
A ratio is a comparison of two quantities (e.g., 2 boys to 3 girls or 2:3).
A proportion, on the other hand, is an equation stating that two ratios are equal (e.g., 2:3 = 4:6). The solutions for Exercise 12.1 focus on calculating ratios, while solutions for Exercise 12.2 focus on using two ratios to form a proportion and check for equality.
8. How do you find an equivalent ratio for a given ratio, for example 2:5, using the method from NCERT Class 6 Maths?
To find an equivalent ratio, you must multiply or divide both the first term (antecedent) and the second term (consequent) by the same non-zero number. For the ratio 2:5:
- Multiplying by 3 gives (2 × 3) : (5 × 3) = 6:15.
- Multiplying by 4 gives (2 × 4) : (5 × 4) = 8:20.

















