SSC (English Medium) १० वीं कक्षा - Maharashtra State Board Important Questions

Give two examples of alloys with their chemical composition.

In the extraction of aluminium: Name the process of concentration of bauxite.

Answer the following question.

What are alloys?

In the extraction of aluminium Write the cathode reaction in electrolytic reduction of alumina.

In the extraction of aluminium: Write the function and formula of cryolite in the extraction of aluminium.

What is ‘3R’ mantra?

Write ‘3R’ mantra significance

What is recycling of waste?

Differentiate between Toilet soap and Laundry soap.

Choose the correct alternative and rewrite the following: 

Acetic acid ..................

Find the values of k for which the quadratic equation 9x² - 3kx + k = 0 has equal roots.

If -5 is a root of the quadratic equation 2x² + px – 15 = 0 and the quadratic equation p(x² + x)k = 0 has equal roots, find the value of k.

If one root of the quadratic equation is `3 – 2sqrt5` , then write another root of the equation.

Form the quadratic equation if its roots are –3 and 4.

Solve the quadratic equation 2x² + 5x + 2 = 0 using formula method.

If a = 1, b = 8 and c = 15, then find the value of  `"b"^2 - 4"ac"`

From the quadratic equation if the roots are 6 and 7.

Choose the correct alternative answer for the following sub questions and write the correct alphabet.

What is the value of discriminant for the quadratic equation X² – 2X – 3 = 0?

If roots of a quadratic equation 3y² + ky + 12 = 0 are real and equal, then find the value of ‘k’

Complete the following activity to solve the given quadratic equation by formula method.

2x² + 13x + 15 = 0

Activity: 2x² + 13x + 15 = 0

a = (______), b = 13, c = 15

b² – 4ac = (13)² – 4 × 2 × (______)

= 169 – 120

b² – 4ac = 49

x = `(-"b" +- sqrt("b"^2 - 4"ac"))/(2"a")`

x = `(- ("______") +- sqrt(49))/4` 

x = `(-13 +- ("______"))/4`

x = `(-6)/4` or x = `(-20)/4`

x = (______) or x = (______)