CBSE Class 9 Mathematics MCQs Set A

 

Question: If (2,-3) is solution of eqn  3x-ky=2 then the value of K is

  • a) -2
  • b) -2/3
  • c) -4
  • d) -4/3

Answer: -4/3


Question: If the slant height of a cone is 10 cm and its radius is 6cm, then height of cone is

  • a) 9cm
  • b) 13cm
  • c) 16cm
  • d) 8cm

Answer: 8cm


Question: If the lateral surface area of cube is 1600cm2 then its edge is

  • a) 15cm
  • b) 18cm
  • c) 25cm
  • d) 20cm

Answer: 20cm


Question: Which one is solution of eqn x-3y=2

  • a) (4,1)
  • b) (6,2)
  • c) (5,1)
  • d) (0,2)

Answer: (5,1)


Question: A die is thrown once. The probability of getting an even no. is

  • a) 1/2
  • b) 1/3
  • c) 1/5
  • d) 2

Answer: 1/2


Question: Class mark of class interval 90-110 is

  • a) 90
  • b) 110
  • c) 100
  • d) None

Answer: 100


Question: Three angle of a quadrilateral is 60°, 110° and 86°. The fourth angle of quadrilateral is

  • a) 104°
  • b) 124°
  • c) 94°
  • d) 84°

Answer: 104°


Question: The value of x in the given figure is










  • a) 22°
  • b) 33°
  • c) 44°
  • d) 68°

Answer: 22°

 

Question: Which was the Tabled city of gold?

  • a) Peru
  • b) Mexico
  • c) El Doeodo
  • d) Spain

Answer: El Doeodo


Question: Which of the following is an irrational number?

  • a) 3.14
  • b) 3.141
  • c) 3.1411
  • d) 3.141141114

Answer: 3.141141114


More Questions...................


Question: The zeros of the polynomial p(x)=x2+x-6 are

  • a) 2,3
  • b) -2, 3
  • c) 2,-3
  • d) -2, -3

Answer: 2,-3


Question: The value of k, for which the polynomial x3-3x2+3x+k has 3 as its zero, is

  • a) -3
  • b) 9
  • c) -9
  • d) 12

Answer: -9


Question: When (x31+31) is divided by (x+1) the remainder is

  • a) 0
  • b) 1
  • c) 30
  • d) 31

Answer: 30


Question: In the given figure, AOB is a straight line. If <AOC = 40°, <COD = 4x° and <BOD = 3x° then <COD=







  • a) 80°
  • b) 100°
  • c) 120°
  • d) 140°

Answer: 80°


Question: In the figure ABC is an equilateral triangle and BDC is an isosceles right triangle, right angled at D,<ABD equals.






  • a) 45°
  • b) 60°
  • c) 105°
  • d) 120°

Answer: 105°


Question: In a

  • a) 60cm2
  • b) 30cm2
  • c) 15√3cm2
  • d) 45cm2

Answer: 30cm2

 

Question: The perimeter of an equilateral triangle is 60m. The area is

  • a) 100√3 m2
  • b) 10√3 m2
  • c) 15√4 m2
  • d) 20√3 m2

Answer: 100√3 m2

 

Question: The number of planks of dimensions (4 m × 50 cm × 20 cm) that can be stored in a pit which is 16 m long, 12m wide and 4 m deep is

  • a) 1900
  • b) 1920
  • c) 1800
  • d) 1840

Answer: 1920


Question: In a cylinder, radius is doubled and height is halved, curved surface area will be

  • a) halved
  • b) doubled
  • c) same
  • d) four times

Answer: doubled


Question: The marks obtained by 17 students in a mathematics test (out of 100) are given below : 91, 82, 100, 100, 96, 65, 82, 76, 79, 90, 46, 64, 72, 68, 66, 48, 49. The range of the data is :

  • a) 46
  • b) 54
  • c) 90
  • d) 100

Answer: 54


Question: The equation 2x + 5y = 7 has a unique solution, if x, y are :

  • a) Natural numbers
  • b) Positive real numbers
  • c) Real numbers
  • d) Rational numbers

Answer: Natural numbers


Question: AD is a diameter of a circle and AB is a chord. If AD = 34 cm, AB = 30 cm, the distance of AB from the centre of the circle is :

  • a) 17 cm
  • b) 15 cm
  • c) 4 cm
  • d) 8 cm

Answer: 15 cm


Question: In Δ ABC, BC = AB and ∠B = 80°. Then ∠A is equal to

  • a) 80°
  • b) 40°
  • c) 50°
  • d) 100°

Answer: 50°


Question: Abscissa of all the points on the x-axis is

  • a) 0
  • b) 1
  • c) 2
  • d) any number

Answer: any number


Question: Two coins are tossed 1000 times and the outcomes are recorded as below :




  • a) 1/5
  • b) 1/4
  • c) 4/5
  • d) 3/4

Answer: 3/4

 

Question: Point (– 10, 0) lies

  • a) on the negative direction of the x-axis
  • b) on the negative direction of the y-axis
  • c) in the third quadrant
  • d) in the fourth quadrant

Answer: on the negative direction of the x-axis


Question: In Δ ABC, AB = AC and ∠B = 50°. Then ∠C is equal to

  • a) 40°
  • b) 50°
  • c) 80°
  • d) 130°

Answer: 50°


Question: ABCD is a cyclic quadrilateral such that AB is a diameter of the circle circumscribing it and ∠ADC = 140º, then ∠BAC is equal to:

  • a) 80°
  • b) 50°
  • c) 40°
  • d) 30°

Answer: 40°


Question: The linear equation 2x – 5y = 7 has

  • a) A unique solution
  • b) Two solutions
  • c) Infinitely many solutions
  • d) No solution

Answer: Infinitely many solutions


Question: The class-mark of the class 130-150 is :

  • a) 130
  • b) 135
  • c) 140
  • d) 145

Answer: 140


Question: The radii of two cylinders are in the ratio of 2:3 and their heights are in the ratio of 5:3. The ratio of their volumes is:

  • a) 10 : 17
  • b) 20 : 27
  • c) 17 : 27
  • d) 20 : 37

Answer: 20 : 27


Question: Two coins are tossed 1000 times and the outcomes are recorded as below :




  • a) 1/5
  • b) 1/4
  • c) 4/5
  • d) 3/4

Answer: 3/4


Question: In a cylinder, radius is doubled and height is halved, curved surface area will be

  • a) halved
  • b) doubled
  • c) same
  • d) four times

Answer: doubled

 


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