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MATHS MCQ

Visualising Solid Shapes · ICSE STD 8 (ICSE - English Medium). 15 questions.

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15 questions · timed · auto-graded

MCQ 11 Mark
A polyhedron have $4$ faces, $4$ vertices and $6$ edges. Name the polyhedron.
  • A
    A rectangular prism
  • B
    A triangular prism
  • C
    A rectangular pyramid
  • ✓
    A triangular pyramid
Answer
Correct option: D.
A triangular pyramid
A polyhedron has $4$ faces, $4$ vertices and $6$ edges.
$\therefore$ It is triangular pyramid. 
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MCQ 21 Mark
In a polyhedron $F = 17, V = 30,$ then $E$ is
  • A
    $30$
  • ✓
    $45$
  • C
    $60$
  • D
    none of these
Answer
Correct option: B.
$45$
$F = 17, V = 30$
$F + V = E + 2$
$\Rightarrow E = F + V – 2$
$\Rightarrow E = 17 + 30 – 2 = 45$
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MCQ 31 Mark
In a polyhedron $F = 5, E = 8$, then $V$ is
  • A
    $3$
  • ✓
    $5$
  • C
    $7$
  • D
    $9$
Answer
Correct option: B.
$5$
$F + V = E + 2$
$\Rightarrow 5 + V = 8 + 2$
$\Rightarrow 5 + V = 10$
$\Rightarrow V = 10 – 5 = 5$
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MCQ 41 Mark
In a polyhedron $E = 15, V = 10$, then $F$ is
  • A
    $3$
  • B
    $5$
  • ✓
    $7$
  • D
    $9$
Answer
Correct option: C.
$7$
$E = 15, V = 10$
$F + V = E + 2$
$\Rightarrow F = E + 2 – V = 15 + 2 – 10 = 7$
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MCQ 51 Mark
The number of rectangular faces in a hexagonal prism are
  • ✓
    $6$
  • B
    $8$
  • C
    $10$
  • D
    $12$
Answer
Correct option: A.
$6$
A hexagonal prism has $6$ rectangular faces. 
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MCQ 61 Mark
The number of edges in a pentagonal pyramid are
  • A
    $5$
  • ✓
    $10$
  • C
    $15$
  • D
    $20$
Answer
Correct option: B.
$10$
A pentagonal pyramid has $10$ edges. 
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MCQ 71 Mark
The number of triangular faces of a triangular prism are
  • ✓
    $2$
  • B
    $3$
  • C
    $4$
  • D
    $5$
Answer
Correct option: A.
$2$
A triangular prism has $2$ triangular faces, 
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MCQ 91 Mark
Which amongst the following is not a polyhedron?
  • A
    Image
  • B
    Image
  • ✓
    Image
  • D
    Image
Answer
Correct option: C.
Image
Figure $(c)$ is not a polyhedron. 
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MCQ 101 Mark
How many congruent isosceles triangle does a square pyramid have?
  • A
    $2$
  • ✓
    $4$
  • C
    $6$
  • D
    $8$
Answer
Correct option: B.
$4$
A square pyramid has $4$ congruent isosceles triangles. 
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MCQ 111 Mark
How many pairs of congruent parallel faces does a rectangular prism have?
  • A
    $8$
  • B
    $6$
  • C
    $4$
  • ✓
    $3$
Answer
Correct option: D.
$3$
A rectangular prism has $3$ pairs of congruent and parallel faces. 
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MCQ 121 Mark
How many parallel and congruent faces does a cylinder have?
  • A
    $4$
  • B
    $3$
  • ✓
    $2$
  • D
    none
Answer
Correct option: C.
$2$
A cylinder has two parallel and congruent faces.
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MCQ 131 Mark
Name the pyramid shown in the given figure.
Image
  • A
    Nonagonal pyramid
  • ✓
    Octagonal pyramid
  • C
    Decagonal pyramid
  • D
    Hexagonal pyramid
Answer
Correct option: B.
Octagonal pyramid
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MCQ 141 Mark
Which of the following is a $3-$ dimensional shape?
  • A
    Parallelogram
  • ✓
    Cylinder
  • C
    Square
  • D
    none of these
Answer
Correct option: B.
Cylinder
Cylinder is a $3-$ dimensional shape. 
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MCQ 151 Mark
Which of the following is not a $2-$ dimensional shape?
  • A
    Triangle
  • B
    Circle
  • ✓
    Sphere
  • D
    Rectangle
Answer
Correct option: C.
Sphere
Sphere is not a two$-$dimensional shape, 
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