## Selina Concise Class 10 Chemistry Chapter 1 Periodic Table, Periodic Properties and Variations of Properties Solution

Selina Concise Class 10 Chemistry Solution Chapter No. 1- ‘Periodic Table, Periodic Properties and Variations of Properties’ For ICSE Board Students 1.) What is the significance of atomic number in the modern periodic table ? Answer-the significance of atomic number in the modern periodic table is , i) In a Periodic Table the chemical and […]

## Selina Concise Class 9 Maths Chapter 6 Simultaneous Equations 6F Solutions

Selina Concise Class 9 Maths Chapter 6 Simultaneous Equations Exercise 6F Solutions   EXERCISE – 6F   (Q1) Five years ago, A’s age was four times the age of B. Five years hence, A’s age will be twice the age of B. Find their present ages. Solution: Let present age of A be x years […]

## Selina Concise Class 9 Maths Chapter 6 Simultaneous Equations 6B Solutions

Selina Concise Class 9 Maths Chapter 6 Simultaneous Equations Exercise 6B Solutions   EXERCISE – 6B   For solving each pair of equations, in this exercise use the method of elimination by equating coefficients (i) 13 + 2y = 9x 3y = 7x Solution: Given equations are, 13 + 2y = 9x —– (i) 3y […]

## Selina Concise Class 9 Maths Chapter 6 Simultaneous Equations 6A Solutions

Selina Concise Class 9 Maths Chapter 6 Simultaneous Equations Exercise 6A Solutions   EXERCISE – 6A   (Q1) Solve the points of liner (Simultaneous) equations by the method of elimination by substitution. (1) 8x + 5y = 9 3x + 2y = 4 Solution: Given equations are – 8x + 5y = 9 —- (i) […]

## Selina Concise Class 9 Maths Chapter 4 Expansions 4C Solutions

Selina Concise Class 9 Maths Chapter 4 Expansions Exercise 4C Solutions   Exercise – 4C   (1) Expand (i) (x + 8) (x + 10) => Solution:- given that, (x + 8) (x + 10) = x × (x + 10) + 8 × (x + 10) = x2 + 10x + 8x + 80 […]

## Selina Concise Class 8 Physics Chapter 2 Physical Quantities and Measurement Solution

Selina Concise Class 8 Physics Solution Chapter No. 2- ‘Physical Quantities and Measurement’ For ICSE Board Students. Selina Concise Physics Solutions for Class 8th Chapter 2 Physical Quantities and Measurement with easy language, expert answers and doubt clearing sections. The book is especially designed keeping in mind the syllabus of ICSE board and the difficulty […]

## Selina Concise Class 9 Maths Chapter 4 Expansions 4B Solutions

Selina Concise Class 9 Maths Chapter 4 Expansions Exercise 4B Solutions   Exercise 4B   (1) Find the cube of (i) 3a – 7b => Solution:- We have to cube of (3a – 7b) Now, we have to use formula (a+ b)3 = a3 + 3ab (a+ b) + b3 and also, we have to […]

## Selina Concise Class 9 Maths Chapter 4 Expansions 4A Solutions

Selina Concise Class 9 Maths Chapter 4 Expansions Exercise 4A Solutions   EXERCISE – 4A   (1) Find the square of (i) 2a + b = Solution: We have to square of (2a + b) Now, we have to use formula (a + b)2 = a2 + 2ab + b2 a = 2a and b […]

## Selina Concise Class 8 Physics Chapter 1 Matter Solution

Selina Concise Class 8 Physics Solution Chapter No. 1- ‘Matter’ For ICSE Board Students. Selina Concise Physics Solutions for Class 8th Chapter 1 Matter with easy language, expert answers and doubt clearing sections. The book is especially designed keeping in mind the syllabus of ICSE board and the difficulty level faced by the students of […]

## Selina Concise Class 10 Math Chapter 14 Equation of a line Exercise 14E Solutions

Selina Concise Class 10 Math Chapter 14 Equation of a line Exercise 14E Solutions   Exercise 14E   (Q1) Find the value of K for which the lines kx – 5y + 4 = 0 and 5x -2y + 5 = 0 are perpendicular to each other. Solution: Given equation of – Lines are kx […]