**PROJECTION OF SECTIONED SOLIDS ANDDEVELOPMENT OF SURFACES**

**BASICS OF SECTION OF SOLIDS**

**1.To understand some of the hidden**

geometry of components an imaginary plane

is used to cut the object which is called

a) auxiliary plane

b) picture plane

c) section plane

d) additional plane**Answer: c**To understand some of the hidden geometry of components an imaginary plane is used to cut the object which is called section plane or cutting plane. The new imaginary face generated on the object iscalled the section.

Explanation:

**2.Which of the following is not the purpose**

of using cutting (section) plane?

a) Interpretation of object

b) Visualizing of object

c) Cutting the objects

d) Invisible features**Answer: c**Section plane or cutting plane

Explanation:

is an imaginary plane which is used to cut the

object to visualize the geometry which is

hidden inside the object and interpret it which

plays an important role in designing many

machine parts.

**3.To find the true shape of the section, it**

must be projected on a plane parallel to the

a) Profile plane

b) Vertical plane

c) Auxiliary plane

d) Section plane**Answer: dExplanation:** As we know true shape and

size is obtained only when an object is

projected on to the plane parallel to it.

Likewise, as section always be plane surface

to know its true shape it should be project

**4.The type of line used to represent the**

cutting plane in drawing is.

**Answer: cExplanation: **Continuous thick line is used for visible out-lines, dashed lines are used for line showing permissible surface treatment, long-dashed dotted lines are used for indication of surfaces for which a special requirement applies.

line showing permissible surface treatment,

long-dashed dotted lines are used for

indication of surfaces for which a special

requirement applies.

**5.A section plane is parallel to V.P the top**

view gives which is

to xy line.

a) true shape, parallel

b) straight line, parallel

c) straight line, perpendicular

d) true shape, perpendicular**Answer: b**The projection of section plane

Explanation:

on the plane to which it is perpendicular gives

a straight line which is parallel,

perpendicular, inclined as due to section if it

is parallel, perpendicular, inclined to

reference planes.**6.The projection of a section plane, on the**

plane to which it is perpendicular is a straight

line.

a) True

b) False**Answer: a**The projection of a section

Explanation:

plane, on the plane to which it is

perpendicular is a straight line. The projection

of a section on the reference plane to which

the section plane is perpendicular will be a

straight line coinciding with the trace of the

section plane of it.**7.The projection of section surface on the**

other plane to which it is inclined is called

auxiliary section.

a) True

b) False**Answer: b**No it is not auxiliary plane but

Explanation:

apparent section. This is obtained by

projecting on the other plane, the points at

which the trace of the section plane intersects

the edges of the solid and drawing lines

joining these points in proper sequence.**8.The section plane is perpendicular to H.P**

and inclined to V.P the front view of section if

section is a line. It xy line.

a) is perpendicular to

b) is parallel to

c) is inclined to V.P

d) crosses**Answer: b**The projection of section plane

Explanation:

on the plane to which it is perpendicular gives

a straight line. It is given the section is line

and also from front view the section lies

parallel to xy reference line.**9.The section plane is perpendicular to H.P**

and inclined to V.P the top view of section if

section is a line. It xy**line.**

a) is perpendicular to

b) is parallel to

c) is inclined to V.P

d) crosses**Answer: c**The projection of section plane

Explanation:

on the plane to which it is perpendicular gives

a straight line. Here it is given section plane is

inclined with V.P so top view gives a line

inclined to xy reference line.**10.A section is perpendicular to both the**

reference planes the true shape and size is

obtained by taking projection of section on to

plane.

a) horizontal

b) vertical

c) profile

d) auxiliary**Answer: c**Given the section is perpendicular to both horizontal and vertical plane that is it is parallel to profile plane which is otherwise called as picture plane. Always remember the true shape and size will be trace if projections are drawn on to the plane parallel to section plane.

Explanation:

**11.A section is parallel to horizontal plane**

the true shape and size is obtained by taking

projection of section on to plane.

a) horizontal

b) vertical

c) profile

d) auxiliary**Answer: a**Always remember the true

Explanation:

shape and size will be trace if projections are

drawn on to the plane parallel to section

plane. So here as the section is parallel to

horizontal plane the projection is to be taken

on horizontal plane.**12.A section is parallel to vertical plane the**

true shape and size is obtained by taking

projection of section on to plane.

a) horizontal

b) vertical

c) profile

d) auxiliary

Answer: b

Explanation: Always remember the true

shape and size will be trace if projections are

drawn on to the plane parallel to section

plane. So here as the section is parallel to a

vertical plane the projection is to be taken on

vertical plane.

**SECTIONS OF PRISMS**

**1.A regular triangular prism is resting on H.P**

and section plane is parallel to H.P and

cutting the prism the section would be a

a) triangle

b) rectangle

c) trapezium

d) parallelogram**Answer: b**Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there exist same cross-section along the length perpendicular to axis.

If the cutting plane parallel to axis we get

rectangle.**2.A cube is rested on H.P on one of its base**

such that base’s diagonal is perpendicular to

V.P and section plane is parallel to V.P the

section will be a

a) triangle

b) rectangle

c) trapezium

d) parallelogram**Answer: b**Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there exist same crosssection along the length perpendicular to axis.

If the cutting plane parallel to axis we get

rectangle.**3.A cube is rested on H.P on one of its base**

such that base’s diagonal is perpendicular to

V.P and section plane is making 45 degrees

with both H.P and V.P and section plane is

not intersecting more than 3 edges the section

will be a

a) triangle

b) rectangle

c) trapezium

d) parallelogram

Answer: a

Explanation: Prisms are obtained by

extruding required shape up to some

appreciable length so there will be same

cross-section along the length perpendicular

to axis. If the cutting plane is parallel to axis

we get rectangle if inclined to axis the section

depends on the position where it is cutting.

**4.A cube is rested on H.P on one of its base**

such that base’s diagonal is perpendicular to

V.P and section plane is making 45 degrees

with V.P and perpendicular to H.P the section

will be a

a) triangle

b) rectangle

c) trapezium

d) parallelogram**Answer: b**Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there exist same crosssection along the length perpendicular to axis.

If the cutting plane parallel to axis we get

rectangle.**5.A cube is placed on H.P on its base and**

vertical face is making 30 degrees with V.P,

section plane is perpendicular to V.P the

section will give a shape of a

a) triangle

b) rectangle

c) trapezium

d) parallelogram**Answer: c**Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there will be same

cross-section along the length perpendicular

to axis. If the cutting plane is parallel to axis

we get rectangle if inclined to axis the section

depends on the position where it is cutting.**6.A square prism has its base on H.P and its**

faces equally inclined to V.P is cut at most

critical place by a plane which is

perpendicular to V.P and inclined 60 degrees

with H.P the section will have shape like a

a) irregular pentagon

b) rectangle

c) trapezium

d) parallelogram**Answer: a**Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there will be same

cross-section along the length perpendicular

to axis. If the cutting plane is parallel to axis

we get rectangle if inclined to axis the section

depends on the position where it is cutting.**7.A triangular prism resting on one of its**

longest faces on H.P and axis of prism is

parallel to V.P, the section plane is

perpendicular to both V.P and H.P the section

will be a

a) triangle

b) rectangle

c) trapezium

d) parallelogram**Answer: a**Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there exist same crosssection along the length perpendicular to axis.

If the cutting plane parallel to axis we get a

rectangle.**8.A pentagonal prism resting on one of its**

longest faces on H.P and axis of prism is

parallel to V.P, the section plane is

perpendicular to both V.P and H.P the section

will be a

a) pentagon

b) irregular pentagon

c) rectangle

d) trapezium**Answer: a**Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there exist same cross-section along the length perpendicular to axis.

If the cutting plane parallel to axis we get a

rectangle.**9.A pentagonal prism resting on one of its longest faces on H.P and axis of prism is parallel to V.P, the section plane is parallel to both V.P/ H.P the section will be a**

a) pentagon

b) irregular pentagon

c) rectangle

d) trapezium

**Answer: cExplanation:** Prisms are obtained by

extruding required shape up to some

appreciable length so there exist same crosssection along the length perpendicular to axis.

If the cutting plane parallel to axis we get a

rectangle.

10.**10.A hexagonal prism is resting on H.P onone of its longest faces, axis is perpendicularto V.P the section plane is parallel to V.P andperpendicular to H.P. The section will be like a**

a) hexagon

b) irregular hexagon

c) rectangle

d) trapezium

**Answer: a**

Explanation:Prisms are obtained by

Explanation:

extruding required shape up to some

appreciable length so there exist same crosssection along the length perpendicular to axis.

If the cutting plane parallel to axis we get a

rectangle.

**SECTIONS OF PYRAMIDS**

**1.A square pyramid is placed on V.P with**

square as base on V.P the cutting plane is

parallel to H.P and also parallel to one edge

of base, the section will be

a) triangle

b) rectangle

c) square

d) trapezium**Answer: d**If a pyramid is cut by a plane

Explanation:

parallel to axis and also parallel to any edge

of base then the section formed will be

trapezium if the section plane not parallel to

edge of base then the section will be triangle.**2.A square pyramid is placed on V.P with**

square as base on V.P the cutting plane is

parallel to V.P, the section will be

a) triangle

b) rectangle

c) square

d) pentagon**Answer: c**If a pyramid is cut by a plane

Explanation:

perpendicular to its axis section gives the

base shape or parallel to axis and also parallel

to any edge of base then the section formed

will be trapezium if the section plane not

parallel to edge of base then the section will

be triangle.**3.A pentagon pyramid is placed on V.P with**

square as base on V.P the cutting plane is

parallel to H.P and parallel to edge of base,

the section will be

a) triangle

b) rectangle

c)**trapezium**

d) pentagon**Answer: c**If a pyramid is cut by a plane

Explanation:

parallel to axis and also parallel to any edge

of base then the section formed will be

trapezium if the section plane not parallel to

edge of base then the section will be triangle.**4.A pentagon pyramid is placed on V.P with**

square as base on V.P the cutting plane is

perpendicular to H.P and inclined to V.P and

the section is cutting the whole cross-section,

the section will be

a) triangle

b) trapezium

c) irregular square

d) irregular pentagon**Answer: d**Given a regular pentagonal

Explanation:

pyramid it may of any size having any

distances in between them if a section plane

cutting the solid inclined to its base and

completely cutting the solid the section

formed will be irregular base shape.**5.A pentagon pyramid is placed on V.P with**

square as base on V.P the cutting plane is

perpendicular to H.P and inclined to V.P and

the section is cutting not more than 3 edges,

the section will be

a) triangle

b) trapezium

c) irregular square

d) irregular pentagon**Answer: a**: If a pyramid is cut by a plane

Explanation:

perpendicular to its axis section gives the

base shape or parallel to axis and also parallel

to any edge of base then the section formed

will be trapezium if the section plane not

parallel to edge of base then the section will

be a triangle.

**6.A square pyramid is placed on H.P on its**

square base and section plane is perpendicular

to V.P and inclined to H.P cutting given solid

in such a way that the perpendicular distance

from the ends of section to axis is same. The

section will be

a) square

b) triangle

c) irregular pentagon

d) rhombus

Answer: d**Explanation: Given a square pyramid it may**

of any size having any distances in between

them if a section plane cutting the solid

coincides with base edge and cutting pyramid

gives a irregular square and similar to other

based pyramids also.**7.A square pyramid is placed on H.P on its**

square base and section plane is perpendicular

to V.P and parallel to H.P and cutting the

solid. The section will be

a) square

b) triangle

c) irregular pentagon

d) rhombus

Answer: a

Explanation: If a pyramid is cut by a plane

perpendicular to its axis section gives the

base shape or parallel to axis and also parallel

to any edge of base then the section formed

will be trapezium if the section plane not

parallel to edge of base then the section will

be a triangle.**8.A square pyramid is placed on H.P on its**

square base and section plane is parallel to

V.P and not parallel to edge of base is cutting

the solid. The section will be

a) square

b) triangle

c) irregular pentagon

d) trapezium

Answer: b

Explanation: If a pyramid is cut by a plane

parallel to axis and also parallel to any edge

of base then the section formed will be

trapezium if the section plane not parallel to

edge of base then the section will be triangle.**9.A regular pentagonal pyramid of base side**

equal to 5 cm is resting on H.P on its

pentagon face and section plane is parallel to

axis and parallel to edge of base and plane is

2 cm away from axis. The section will be

a) triangle

b) trapezium

c) rectangle

d) pentagon**Answer: b**If a pyramid is cut by a plane

Explanation:

parallel to axis and also parallel to any edge

of base then the section formed will be

trapezium if the section plane not parallel to

edge of base then the section will be triangle.**10.A regular pentagonal pyramid of base side**

equal to 5 cm is resting on H.P on its

pentagon face and section plane is

perpendicular to axis. The section will be

a) triangle

b) trapezium

c) rectangle

d) pentagon**Answer: d**If a pyramid is cut by a plane

Explanation:

perpendicular to its axis section gives the

base shape or parallel to axis and also parallel

to any edge of base then the section formed

will be trapezium if the section plane not

parallel to edge of base then the section will

be triangle.

**SECTIONS OF CYLINDERS**

**1.A cylinder is placed on H.P on its base and**s

section plane is parallel to V.P cutting the

solid the section give

a) parabola

b) circle

c) rectangle

d) ellipse**Answer: c**Cylinder is formed by rotating

Explanation:

the rectangle about one of its sides which is

said to axis further. So if the cutting plane is

parallel to axis the section formed is rectangle

and if plane is perpendicular to axis it gives

circle.**2.A cylinder is placed on H.P on its base and**

section plane is parallel to H.P cutting the

solid the section gives

a) parabola

b) circle

c) rectangle

d) ellipse**Answer: b**Cylinder is formed by rotating

Explanation:

the rectangle about one of its sides which is

said to axis further. So if the cutting plane is

parallel to axis the section formed is rectangle

and if plane is perpendicular to axis it gives

circle.**3.A cylinder is placed on H.P on its base and**

section plane is inclined to V.P and

perpendicular to H.P cutting the solid the

section gives

a) parabola

b) circle

c) rectangle

d) ellipse

**Answer: cExplanation:** Cylinder is formed by rotating

the rectangle about one of its sides which is

said to axis further. So if the cutting plane is

parallel to axis the section formed is rectangle

and if plane is perpendicular to axis it gives

circle.

**4.A cylinder is placed on H.P on its base and**

section plane is inclined to H.P and

perpendicular to V.P cutting only less than

half of the generators of the solid the section

gives

a) parabola

b) circle

c) rectangle

d) ellipse**Answer: a**If a cylinder is been cut by

Explanation:

plane which is inclined to base or axis if it

cuts all the generator the section formed will

be ellipse and if the plane cuts less than half

of generators the section formed will be

parabola.**5.A cylinder is placed on V.P on its base and**

section plane is inclined to V.P and

perpendicular to H.P cutting all the generators

of the solid the section gives

a) parabola

b) circle

c) rectangle

d) ellipse**Answer: d**If a cylinder is been cut by

Explanation:

plane which is inclined to base or axis if it

cuts all the generator the section formed will

be ellipse and if the plane cuts less than half

of generators the section formed will be

parabola.**6.A cylinder is placed on V.P on its base and**

section plane is inclined to H.P and

perpendicular to V.P cutting the solid the

section gives

a) parabola

b) circle

c) rectangle

d) ellipse**Answer: c**Cylinder is formed by rotating

Explanation:

the rectangle about one of its sides which is

said to axis further. So if the cutting plane is

parallel to axis the section formed is rectangle

and if plane is perpendicular to axis it gives

circle.- 7
**.A cylinder is been cut by a plane parallel to**

its base the section will be

a) parabola

b) circle

c) rectangle

d) ellipse

Answer: b**Explanation:**Cylinder is formed by rotating

the rectangle about one of its sides which is

said to axis further. So if the cutting plane is

parallel to axis the section formed is rectangle

and if plane is perpendicular to axis it gives

circle. **8.A cylinder is been cut by a plane parallel to**

axis the section will be

a) parabola

b) circle

c) rectangle

d) ellipse**Answer: c**Cylinder is formed by rotating

Explanation:

the rectangle about one of its sides which is

said to axis further. So if the cutting plane is

parallel to axis the section formed is rectangle

and if plane is perpendicular to axis it gives

circle.

**SECTIONS OF CONES**

**1.A regular cone is placed on V.P on its base**

a section plane is parallel to H.P and section

plane is 2cm away from the axis the section will be

a) ellipse

b) hyperbola

c) circle

d) triangle**Answer: bExplanation:** If a cone made to cut by a plane

parallel to its axis and some distance away

from it the section formed is hyperbola. If the

section plane is perpendicular to axis the

section is circle. If section plane passes

through apex the section formed is a triangle.

**2.A regular cone is placed such that axis is**

perpendicular to H.P and the section plane is

inclined to axis and parallel to one of the

generator then the section will be

a) ellipse

b) hyperbola

c) parabola

d) triangle

Answer: c

Explanation: If a regular cone is been cut by

plane which is inclined to axis of cone and

cutting all generators then the section formed

will be ellipse and if section plane is inclined

with axis with angle less than half of the

angle between the slanting ends then section

formed is a parabola.**3.A regular cone is placed such that axis is**

parallel to both reference planes the section

plane perpendicular to both reference planes

and cuts the cone the section will be like

a) ellipse

b) hyperbola

c) circle

d) triangle

Answer: c

Explanation: If a cone made to cut by a plane

parallel to its axis and some distance away

from it the section formed is hyperbola. If the

section plane is perpendicular to axis the

section is circle. If section plane passes

through apex the section formed is a triangle.**4.A regular cone is placed on H.P and**

section plane is parallel to axis cutting the

cone at the middle then the section will be

a) ellipse

b) hyperbola

c) circle

d) triangle**Answer: d**

Explanation: If a cone made to cut by a plane

parallel to its axis and some distance away

from it the section formed is hyperbola. If the

section plane is perpendicular to axis the

section is circle. If section plane passes

through apex the section formed is a triangle.**5.A regular cone is been cut by a cutting**

plane which passes through the apex of cone

and making some angle with axis less than

half of angle between the slanting ends the

section will be like

a) ellipse

b) hyperbola

c) circle

d) triangle**Answer: d**If a cone made to cut by a plane

Explanation:

parallel to its axis and some distance away

from it the section formed is hyperbola. If the

section plane is perpendicular to axis the

section is circle. If section plane passes

through apex the section formed is a triangle

**SECTIONS OF SPHERES**

**1.A sphere is placed on H.P and section**

plane is parallel to H.P the section is circle

and if the section plane is parallel to V.P the

section is again circle.

a) True

b) False**Answer: a**When a sphere is cut by a

Explanation:

plane, the true shape of the section is always a

circle. But here asked are views so it will be

lines or ellipse according to section plane

however the section plane will lay section

will be circle.**2.If a sphere is made to cut by a plane which**

is inclined to V.P when circle is on H.P the

section formed will be an ellipse.

a) True

b) False

b) ellipse, circle

c) line, ellipse

d) line, circle**Answer: d**When a sphere is cut by a

Explanation:

plane, the true shape of the section is always a

circle. But here asked are views so it will be

lines or ellipse according to section plane

however the section plane will lay section

will be circle.**3.A sphere is placed on V.P the section plane**

perpendicular to H.P and inclined to V.P

cutting the sphere section formed and front

view will be

a) circle, line

b) circle, circle

c) ellipse, circle

d) circle, ellipse**Answer: d**When a sphere is cut by a

Explanation:

plane, the true shape of the section is always a

circle. But here asked are views so it will be

lines or ellipse according to section plane

however the section plane will lay section

will be circle.

**5.A hemi sphere is placed on H.P on its base**

a section plane which is perpendicular to H.P

and inclined to V.P and cutting the

hemisphere the section will be

a) circle

b) ellipse

c) sector

d) segment**Answer: d**Hemisphere is the half sphere.

Explanation:

When a hemisphere is made to cut by a plane

parallel to base the section formed will be

circle. If the plane is inclined to base the

section formed will be segment.

**DEVELOPMENT OF SURFACES**

**1.Which method of development is**

employed in case of prisms?

a) Parallel-line development

b) Approximation method

c) Triangulation development

d) Radial-line development**Answer: a**Parallel-line method is

Explanation:

employed in case of prisms and cylinders in

which stretch out-line principle is used.

Radial-line development is used for pyramids

and cones in which the true length of the slant

edge or the generator is used as a radius.**2.Which method of development is**

employed in case of cones?

a) Parallel-line development

b) Approximation method

c) Triangulation development

d) Radial-line development

Answer: d

Explanation: Parallel-line method is

employed in case of prisms and cylinders in

which stretch out-line principle is used.

Radial-line development is used for pyramids

and cones in which the true length of the slant

edge or the generator is used as a radius.**3.Which method of development is**

employed in case of double curved objects?

a) Parallel-line development

b) Approximation method

c) Triangulation development

d) Radial-line development**Answer: b**Approximation method is used

Explanation:

to develop objects of double curved or

warped surfaces as sphere, paraboloid,

ellipsoid, hyperboloid and helicoid.

Triangulation method is used for transition

pieces. This is simply a method of dividing a

surface into number of triangles and

transferring them into the development.**4.4.Which method is used to develop transition**

pieces?

a) Parallel-line development

b) Approximation method

c) Triangulation development

d) Radial-line development

Answer: c

Explanation: Approximation method is used

to develop objects of double curved or

warped surfaces as sphere, paraboloid,

ellipsoid, hyperboloid and helicoid.

Triangulation method is used for transition

pieces. This is simply a method of dividing a

surface into number of triangles and

transferring them into the development.

**5.Which method of development is**

employed in case of sphere, ellipsoid?

a) Parallel-line development

b) Approximation method

c) Triangulation development

d) Radial-line development**Answer: b**Approximation method is used

Explanation:

to develop objects of double curved or

warped surfaces as sphere, paraboloid,

ellipsoid, hyperboloid and helicoid.

Triangulation method is used for transition

pieces. This is simply a method of dividing a

surface into number of triangles and

transferring them into the development.**6.Developments of the lateral surface of a**

prism consist of the same number of

in contact as the number of the

sides of base of the prism.

a) squares

b) rectangles

c) triangles

d) parallelograms**Answer: b**

Explanation: Developments of the lateral

surface of a prism consist of the same number

of rectangles in contact as the number of the

sides of base of the prism. One side of the

rectangle is equal to the length of the axis and

the other side equal to the length of the side

of the base.

**7.The development of lateral surface of a**

pyramid consists of a number of equal

triangle in contact.

a) equilateral

b) isosceles

c) scalene

d) right angled**Answer: b**The development of lateral

Explanation:

surface of a pyramid consists of a number of

equal isosceles triangles in contact. The base

and sides of each triangle are respectively

equal to the edge of the base and slant edge of

the pyramid.

**INTERSECTION OF SURFACES**

**1.The surfaces of which intersect one another**

in lines which are called line of intersection.

a) True

b) False**Answer: a**In engineering practice, objects

Explanation:

constructed may have constituent parts, the

surfaces of which intersect one another in line

which are called line of intersection. A dome

fitted on a boiler is one such example. The

surface of the dome extends up to the line of

intersection only.

and between a plane surface and curved

surfaces is a

a) straight line, curve, curve

b) straight line, straight line, curve

c) straight line, curve, straight line

d) curve, curve, curve

3.Which method of development is**employed in case of double curved objects? The plane surfaces (faces of**

prisms and pyramids) intersect in a straight

line. The line of intersection between two

curved surfaces (of cylinders and cones) or

between a plane surface and curved surfaces

is a curve.**2.Drawing straight lines on both the surfaces**

of solids and then pointing the points where

they intersect and drawing lines which forms

the line of intersection this process of finding

the line of intersection is termed as

method.

a) assumption

b) line

c) removing material

d) cutting- plane**Answer: b**

Explanation: A number of lines are drawn on

the lateral surface of one of the solids and in

the region of the line of intersection. Points of

intersection of these lines with the surface of

the other solid are then located. These points

will obviously lie on the required line of

intersection.**4.**

a) assumption

b) line

c) removing material

d) cutting- plane

**Answer: dExplanation: **The two solids are assumed to

be cut by a series of cutting planes. The

cutting planes may be vertical, edgewise or

oblique. The cutting planes are so selected as

to cut the surface of one of the solids in

straight lines and that of the other in straight

lines or circle.

**5.The line of intersection formed is curve**

while two solids are intersecting the solids

may be

a) cylinder, sphere

b) prism, prism

c) cuboid, cube

d) prism, pyramid**Answer: a**If any of the solid in two of

Explanation:

intersecting solids is having curves surface

that is cylinder, cone, sphere etc the line of

intersection will give curve only but not

straight line for getting line of intersection

straight line both the solids should not have

curved surfaces.