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10th maths Extra score questions chapter Pair of L...

By Jsunil
10th maths Extra score questions Pair of Linear Equation in Two Variable HOTS By JSUNIL TUTORIAL 1 mark questions :- Q. 1 Is the pair of linear equations consistent: - x + y = 3 ; 3x – 2y = 4 . Q. 2 Find out whether the lines representing the following pair of linear equations are parallel or coincide:- 6x – 3y +10 = 0 ; 2x – y + 9 = 0 Q. 3 Write the value of k for which the following pair of linear equations has unique solution:- x + k y + 6 = 0 ; 2x + 3y + 8 = 0 Q. 4 Write the value of k for which the following pair of linear equations has no solution: - 4x +y =11 ; k x + 3y =5 Q. 5 Write the value of k for which the system of equations has infinite solutions:- 2x – 3y +10 = 0 ; 3x – ky +15 = 0 Q. 6 Does (2, –3) lie on the linear equation 3x – 2y + 5 = 0 Read more »
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CBSE Assessment of Practical Skills in Science class X

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Set-1Practical Skills in Science 1. The two colours seen at the extreme ends of the pH chart are (a) red and blue.  (b) red and green. (c) green and blue. (d) orange and green Ans: (a) Red colour is at the top and blue colour is at the bottom. 2. A student observed that the colour of pH paper changes to green when shedipped it in water. She added a few drops of concentrated hydrochloric acid to the water. The colour of pH paper would turn to (a) light red.  (b) apple green. (c) dark blue. (d) lemon yellow. Ans: (a) The colour of pH paper is green in neutral medium, whereas it is red in acidic medium. 3. When zinc reacts with dilute hydrochloric acid (a) the surface of zinc becomes brighter.   (b) the surface of zinc becomes black and dull. (c) the metal turns into powder.                  (d) the reaction mixture turns green. Ans: (b)  The surface becomes black and dull as the reaction proceeds 4. Students A, B and C were given five raisins each of equal weight. The raisins  were soa
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