CBSE Class 10 Maths (Standard) Marking Scheme 2020

QUESTION PAPER CODE 30/1/1

EXPECTED ANSWER/VALUE POINTS

SECTION – A

Q. No. 1 to 10 are multiple choice type questions of 1 mark each.

Select the correct option.

Q. No.

Marks

1.

If one of the zeroes of the quadratic polynomial x2 + 3x + k is 2, then the value of k is

(a) 10

(b) –10

(c) –7

(d) –2

Ans: (b) –10

1

2.

The total number of factors of a prime number is

(a) 1

(b) 0

(c) 2

(d) 3

Ans: (c) 2

1

3.

The quadratic polynomial, the sum of whose zeroes is –5 and their product is 6, is

(a) x² + 5x + 6

(b) x² – 5x + 6

(c) x² – 5x – 6

(d) –x² + 5x + 6

Ans: (a) x² + 5x + 6

1

4.

The value of k for which the system of equations x + y – 4 = 0 and 2x + ky =3 has no solution, is (a) –2

(b) ≠2

(c) 3

(d) 2

Ans: (d) 2

1

5.

The HCF and the LCM of 12, 21, 15 respectively are

(a) 3,140

(b) 12,420

(c) 3,420

(d) 420,3

Ans: (c) 3,420

1

6.

The value of x for which 2x,(x + 10) and ( 3x + 2 ) are the three consecutive terms of an AP, is

(a) 6

(b) –6

(c) 18

(d) –18

Ans: (a) 6

1

7.

The first term of an AP is p and the common difference is q, then its 10th term is

(a) q + 9p

(b) p – 9q

(c) p + 9q

(d) 2p + 9q

Ans: (c) p + 9q

1

9.

If the point P(k, 0) divides the line segment joining the points A(2, –2) and B(–7, 4) in the ratio 1 : 2, then the value of k is,

(a) 1

(b) 2

(c) –2

(d) –1

Ans: (d) –1

1

10.

The value of p, for which the points A(3, 1), B(5, p) and C(7, –5) are collinear, is

(a) –2

(b) 2

(c) –1

(d) 1

Ans: (a) –2

1