11th Economics - Book Back Answers - Unit 12 - English Medium Guides

 

 

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Tamil Nadu Board 11th Standard Economics - Unit 12 : Book Back Answers and Solutions

    This post covers the book back answers and solutions for Unit 12 – Economics from the Tamil Nadu State Board 11th Standard textbook. These detailed answers have been carefully prepared by our expert teachers at KalviTips.com.

    We have explained each answer in a simple, easy-to-understand format, highlighting important points step by step under the relevant subtopics. Students are advised to read and memorize these subtopics thoroughly. Once you understand the main concepts, you’ll be able to connect other related points with real-life examples and confidently present them in your tests and exams.

    By going through this material, you’ll gain a strong understanding of Economics Unit 12 along with the corresponding book back questions and answers (PDF format).

Question Types Covered:

• 1 Mark Questions: Choose the correct answer, Fill in the blanks, Identify the correct statement, Match the following 
• 2 Mark Questions: Answer briefly 
• 3, 4, and 5 Mark Questions: Answer in detail

All answers are presented in a clear and student-friendly manner, focusing on key points to help you score full marks.

All the best, Class 11 students! Prepare well and aim for top scores. Thank you!

Unit 12:Mathematical methods for Economics

I. Multiple Choice questions.

1. Mathematical Economics is the integration of
a. Mathematics and Economics
b. Economics and Statistics
c. Economics and Equations
d. Graphs and Economics
Answer Key:
a. Mathematics and Economics
 
2. The construction of demand line or supply line is the result of using
a. Matrices
b. Calculus
c. Algebra
d. Analytical Geometry
Answer Key:
d. Analytical Geometry
 
3. The first person who used mathematics. in Economics is
a. Sir William Petty
b. Giovanni Ceva
c. Adam Smith
d. Irving Fisher
Answer Key:
b. Giovanni Ceva
 
4. Function with single independent variable is known as
a. Multivariate Function
b. Bivariate Function
c Univariate Function
d. Polynomial Function
Answer Key:
c Univariate Function
 
5. A statement of equality between two quantities is called
a. Inequality
b. Equality
c. Equations
d. Functions
Answer Key:
c. Equations
 
6. An incremental change in dependent variable with respect to change in independent variable is known as
a. Slope
b. Intercept
c. Variant
d. Constant
Answer Key:
a. Slope
 
7. (yy₁)=m(x-x₁) gives the
a. Slope
b. Straight line
c. Constant
d. Curve
Answer Key:
b. Straight line
 
8. Suppose D = 50-5P. When D is zero then
a. Pis 10
b.P is 20
c. Pis 5
d.Pis-10
Answer Key:
a. Pis 10
 
9. Suppose D15050P. Then, the slope is
a. -5
b. 50
c. 5
d. -50
Answer Key:
d. -50
 
10. Suppose determinant of a matri xA = 0, then the solution
a. Exists
b. Does not exist
c. is infinity
d. is zero
Answer Key:
b. Does not exist
 
11. State of rest is a point termed as
a. Equilibrium
b. Non-Equilibrium
c. Minimum Point
d. Maximum Point
Answer Key:
a. Equilibrium
 
12. Differentiation of constant term gives
a. one
b. zero
c. infinity
d. non-infinity
Answer Key:
b. zero
 
13. Differentiation of xⁿ is
a. nx^(n-1)
b. nx ⁽ⁿ⁺¹⁾
c. zero
d. one
Answer Key:
a. nx^(n-1)
 
14. Fixed Cost is the term in cost function represented in mathematical form.
a. Middle
b. Price
c. Quantity
d. Constant
Answer Key:
d. Constant
 
15. The first differentiation of Total Revenue function gives
a. Average Revenue
b. Profit
c. Marginal Revenue
d. Zero
Answer Key:
c. Marginal Revenue
 
16. The elasticity of demand is the ratio of
a. Marginal demand function and Revenue function
b. Marginal demand function to Average demand function
c. Fixed and variable revenues
d. Marginal Demand function and Total demand function
Answer Key:
b. Marginal demand function to Average demand function

 

17. If x+y 5 and x-y 3 then, Value of x
a. 4
b. 3
c. 16
d. 8
Answer Key:
a. 4
 
18. Integration is the reverse process of
a. Difference
b. Mixing
c. Amalgamation
d. Differentiation
Answer Key:
d. Differentiation
 
19. Data processing is done by
a. PC alone
b. Calculator alone
c. Both PC and Calculator
d. Pen drive
Answer Key:
c. Both PC and Calculator
 
20. The command Ctrl + M is applied for
a. Saving
b. Copying
c. getting new slide
d. deleting a slide
Answer Key:
c. getting new slide

 

II. Answer the following questions in one or two sentences.

a

III. Answer the following questions in one paragraph.

a

IV. Answer the following questions in about a page.

a