Explore topic-wise MCQs in 12th.

This section includes 406 Mcqs, each offering curated multiple-choice questions to sharpen your 12th knowledge and support exam preparation. Choose a topic below to get started.

151.

An equilateral triangle of side 10 cm is held parallel to horizontal plane and base is parallel to xy reference line. The length of line from side view will be

A. 8.66 cm
B. 10 cm
C. 0 cm
D. 12.47 cm
Answer» B. 10 cm
152.

While drawing projections if a triangle is parallel to horizontal plane, top should be drawn first and projections are drawn to it to get front view.

A. true
B. false
Answer» B. false
153.

If a plane is parallel to one of the reference plane then the projection onto the other reference planes would be a line.

A. true
B. false
Answer» B. false
154.

An ellipse is placed parallel to vertical plane which of the following projection is false?

A. front view-ellipse, top view- line
B. length in top view and side view will be same
C. ellipse is perpendicular to horizontal plane
D. the traces of plane containing this circle will not intersect at xy reference line
Answer» C. ellipse is perpendicular to horizontal plane
155.

A square of side 10 cm is held parallel to vertical plane and one diagonal is perpendicular to xy reference plane. The length of line in top view will be

A. 10 cm
B. 14.14 cm
C. 7.07 cm
D. 0 cm
Answer» C. 7.07 cm
156.

An equilateral triangle of side 10 cm is held parallel to horizontal plane and base is parallel to xy reference line. The length of line from front view will be

A. 8.66 cm
B. 10 cm
C. 0 cm
D. 12.47 cm
Answer» C. 0 cm
157.

The traces of plane are not intersecting at xy reference line then the plane is

A. inclined to h.p and perpendicular to v.p
B. parallel to h.p and perpendicular to v.p
C. perpendicular to both reference planes
D. inclined to v.p and perpendicular to h.p
Answer» C. perpendicular to both reference planes
158.

When a plane is perpendicular to a reference plane, its projection on that plane shows its true shape and size.

A. true
B. false
Answer» C.
159.

A plane parallel to vertical plane then which of the following is false statement.

A. vertical trace will not present
B. horizontal trace is parallel to xy
C. front view give true shape and size
D. top view give true shape and size
Answer» E.
160.

A plane perpendicular to vertical plane and inclined to horizontal plane then the vertical trace of that plane will be

A. parallel to horizontal plane
B. perpendicular to horizontal plane
C. parallel to xy reference line
D. inclined to horizontal plane
Answer» E.
161.

When a plane is perpendicular to both the reference planes, its traces are perpendicular to

A. xy reference line
B. lines on horizontal plane
C. lines on vertical plane
D. lines on given plane
Answer» B. lines on horizontal plane
162.

A circle is placed at 20 degrees with vertical the view from top view will be

A. line
B. circle
C. ellipse
D. oval
Answer» D. oval
163.

A square is held 30 degrees with horizontal plane and turned 30 degrees with respect to vertical plane keeping earlier condition constant. The front view will be

A. line
B. square
C. rectangle
D. parallelogram
Answer» E.
164.

A square is held 30 degrees with horizontal plane and turned 30 degrees with respect to vertical plane keeping earlier condition constant. The top view will be

A. line
B. square
C. rectangle
D. parallelogram
Answer» D. parallelogram
165.

A line AB is placed in such a way that the distance from A and B to vertical plane are 5 and 10 cm and distances from A and B to horizontal plane are 5 and 10 cm each. The traces would present

A. one on above and other below reference line
B. below the reference line
C. on xy reference line
D. above the reference line
Answer» D. above the reference line
166.

A line AB is placed in such a way that the distance from A and B to vertical plane are 5 and 10 cm and distances from A and B to horizontal plane are 4 and 8 cm each. The traces would present

A. one on above and other below reference line
B. below the reference line
C. on xy reference line
D. above the reference line
Answer» D. above the reference line
167.

A line AB is parallel to vertical plane and inclined to horizontal plane and held 5 cm apart from vertical plane. The expected trace will be placed at

A. above 5 cm from xy reference, on vertical plane
B. below 5 cm from xy reference, on horizontal plane
C. on the xy reference
D. above 5 cm from vertical reference, on vertical plane
Answer» C. on the xy reference
168.

A line AB has its one say B end in horizontal plane and vertical plane then horizontal trace and vertical trace will coincide in                     line.

A. xy reference
B. vertical reference
C. above xy reference
D. below xy reference
Answer» B. vertical reference
169.

If a line parallel to one plane then the line will not have trace on that plane.

A. true
B. false
Answer» B. false
170.

If a line has one of its ends in the vertical plane. Its vertical trace coincides with the

A. front
B. top
C. side
D. isometric
Answer» B. top
171.

If a line has one of its ends in the horizontal plane. Its horizontal trace coincides with the

A. front
B. top
C. side
D. isometric
Answer» C. side
172.

A line is perpendicular to horizontal plane. Its horizontal trace coincides with its             view.

A. front
B. top
C. side
D. isometric
Answer» C. side
173.

A line is perpendicular to vertical plane. Its vertical trace coincides with its            view.

A. front
B. top
C. side
D. isometric
Answer» B. top
174.

If a line meets horizontal plane the point of intersection is called

A. horizontal trace
B. regular trace
C. parallel trace
D. general trace
Answer» B. regular trace
175.

When a line is inclined to a plane, produced if necessary. The point in which the line meets the plane is called its

A. meeting point
B. locus
C. complete end
D. trace
Answer» E.
176.

A line parallel to profile plane is held at 85 degrees with vertical plane and top view gives 20 cm of length. What is the true length of line?

A. 1.7 cm
B. 229 cm c) 20.07 cm
C. 19.9 cm
Answer» D.
177.

A line parallel to profile plane is held at 25 degrees with vertical plane and side view gives 2 cm of length. What is the true length of line?

A. 4.7 cm
B. 2 cm
C. 2.2 cm
D. 0.84 cm
Answer» C. 2.2 cm
178.

A line parallel to vertical plane is held at 35 degrees with horizontal plane and side view gives 3 cm of length. What is the true length of line?

A. 5.2 cm
B. 3.66 cm
C. 2.45 cm
D. 1.72 cm
Answer» B. 3.66 cm
179.

A line parallel to profile plane is held at 30 degrees with horizontal plane and front view gives 2 cm of length. What is the true length of line?

A. 1 cm
B. 1.73 cm
C. 2.3 cm
D. 4 cm
Answer» E.
180.

A line which is parallel to horizontal plane is made to turn to an angle of 35 degrees with vertical and then turned to an angle of 45 degrees with horizontal plane and now the line has a length of 9 cm from front view. What is its true length?

A. 7.37 cm
B. 5.16 cm
C. 10.9 cm d) 15.69 cm
Answer» D.
181.

A line which is parallel to vertical plane and making an angle of 50 degrees with horizontal has a length of 5 cm from side view. What is its true length?

A. 6.52 cm
B. 7.77 cm
C. 3.2 cm
D. 3.8 cm
Answer» B. 7.77 cm
182.

A line of length 1 m is placed in profile plane making an angle of 180 degrees with the horizontal. What is the length of line top view?

A. 1m
B. 0 m
C. 0.5 m
D. 1.5 m
Answer» B. 0 m
183.

A line of length 20 cm is placed in profile plane making an angle of 65 degrees with the horizontal. What is the length of line side view?

A. 18.12 cm
B. 8.45 cm
C. 20 cm
D. 22.06 cm
Answer» D. 22.06 cm
184.

A line of length 20 cm is placed in profile plane making an angle of 65 degrees with the horizontal. What is the length of line front view?

A. 18.12 cm
B. 8.45 cm
C. 20 cm
D. 22.06 cm
Answer» B. 8.45 cm
185.

The length of line placed in profile plane and making an angle of 155 degrees with the horizontal is 3 cm from top view. What is the actual length?

A. 3.31 cm
B. 7.09 cm
C. 1.26 cm
D. 2.7 cm
Answer» B. 7.09 cm
186.

The length of line placed in profile plane from front view is product of actual length and         (angle with horizontal plane).

A. cosine
B. sine
C. tangent
D. secant
Answer» C. tangent
187.

The view which gives the actual length of line in profile plane is

A. front view
B. top view
C. side view
D. bottom view
Answer» D. bottom view
188.

There will be no change in length if the line is viewed parallel to plane on which the line is present and also if the line is rotated with respect to perpendicular planes.

A. true
B. false
Answer» B. false
189.

A line of length X cm lied on horizontal plane turned 60 degrees with respect to horizontal plane by keeping one of its ends fixed and attained length of Y cm top view. Which of the following statement is true?

A. x =y
B. x=2 * y
C. x= ½ * y
D. x >y
Answer» D. x >y
190.

A line of length 15 cm at first lied on the vertical plane parallel to horizontal plane and then keeping one of its ends fixed turned 35 degrees with respect to horizontal plane and then turned 40 degrees with respect to vertical plane. What is the length of the line in top view?

A. 9.6 cm
B. 11.4 cm c) 12.28 cm
C. 8.6 cm
Answer» C. 8.6 cm
191.

A line of length 15 cm at first lied on the vertical plane parallel to horizontal plane and then keeping one of its ends fixed turned 35 degrees with respect to horizontal plane and then turned 40 degrees with respect to vertical plane. What is the length of the line in front view?

A. 9.6 cm
B. 11.4 cm
C. 12.28 cm
D. 8.6 cm
Answer» E.
192.

A line of length 20 cm at first lied on the profile plane parallel to the vertical plane and then keeping one of its ends fixed turned 40 degrees with respect to vertical plane and then turned 20 degrees with respect to profile plane. What is the length of the line in side view?

A. 18.79 cm
B. 6.8 cm c) 12.85 cm d) 15.32 cm
Answer» B. 6.8 cm c) 12.85 cm d) 15.32 cm
193.

A line of length 10 cm at first lied on the horizontal plane parallel to vertical plane and then keeping one of its ends fixed turned 30 degrees with respect to vertical plane and then turned 45 degrees with respect to horizontal plane. What is the length of line in front view?

A. 8.66 cm
B. 7.07 cm
C. 3.53 cm
D. 6.12 cm
Answer» B. 7.07 cm
194.

A line of length 12 inches is parallel to vertical plane and 5 inches away from it and making an angle of 5 degrees with profile plane. The distance from line to xy reference line in top view will be                 inches.

A. 5 inches
B. 12 inches
C. 4.9 inches
D. 0.43 inches
Answer» B. 12 inches
195.

A line of length 12 inches is parallel to vertical plane and 5 inches away from it and ends of it is 3, 4 inches away from the profile plane. The length of line in top view will be

A. 1 inch
B. 3 inches
C. 7 inches
D. 5 inches
Answer» B. 3 inches
196.

A line of length 15 cm is parallel to horizontal plane and vertical plane and 10 cm away from vertical plane. The distance from line to vertical reference line in side view will be

A. 10 cm
B. 15 cm
C. 0 cm
D. 10.06 cm
Answer» B. 15 cm
197.

A line of length 15 cm is parallel to horizontal plane and 10 cm away from it and making an angle of 45 degrees with profile plane. The distance from line to xy reference line in front view will be

A. 15 cm
B. 10 cm
C. 7.07 cm d) 10.06 cm
Answer» C. 7.07 cm d) 10.06 cm
198.

A line of length 5 inches parallel to horizontal plane and inclined to vertical plane with an angle of 35 degrees. What is the length in side view?

A. 7.28 inches
B. 2.86 inches
C. 4.09 inches
D. 5 inches
Answer» C. 4.09 inches
199.

A line is in vertical plane and perpendicular to horizontal plane at a distance of 10 cm from horizontal and 5 cm from profile plane. What is the distance from xy reference line to line in top view?

A. 10 cm
B. 5 cm
C. 6 cm
D. 0 cm
Answer» E.
200.

A line is in vertical plane and perpendicular to horizontal plane at a distance of 10 cm from horizontal plane and 5 cm from profile plane. What is the distance from vertical reference line to line?

A. 10 cm
B. 0 cm
C. 5 cm
D. 7.5 cm
Answer» D. 7.5 cm