# Mathematics MCQS for class 12 with Answers Chapter 7

#### Mathematics MCQS for class 12 with Answers

If any two vectors of scalar triple product are equal, then its value is
1
0
2
-1

If a & b are two non-zero vectors, then a vector perpendicular to each of the vectors is:
b x a
None of these
a . b
a x b

If terminal point B of vector AB coincides with its initial point A then it is called:
Zero vector
Both (b)&(c)
Null vector
Unit vector

For a unit vector
2
-1
0
1

The magnitude of dot and cross product of two vectors are zero and 1 respectively, then angle between vectors is
30
45
60
90

j . k x i is equal to
j
1
-1
i

If U = 2i + 7j + 9b, then U x U =
-4j
3i + 5j + 19k
0
19j

The unit vector along z-axis is denoted by:
î
k?
?
None of these

The vector i = [0, 1,0] is called ________ along x-axis
None of these
Null vector
Unit vector
Position vector

The vector i = [1,0] is called ___________ along x-axis
None of these
Unit vector
Null vector
Position vector

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