# XII_Maths_Matrices and Determinants_2 Online Test

If I is a unit matrix, then 3I is ____.
A unit matrix
A triangular matrix
A scalar matrix
None of the above
In a skew symmetric matrix, the diagonal elements are all ____.
Different from each other
Zero
One
None of the above
Given 2x –y +2z =2, x –2y +z =-4, x+ y +(z =4 then the value of ( such that the given system of equation has NO solution, is
3
1
0
-3
The parameter, on which the value of the determinant  does not depend upon is
a
p
d
x
Consider the set A of all determinants of order 3 with entries 0 or 1 only. Let B be the subset of A consisting of all determinants with value 1. Let C be the subset of A consisting of all determinants with value –1. Then
C is empty
B has as many elements as C
A = B ( C
B has twice as many elements as elements as C
Normal type of MCQ with one correct option A square matrix A is called idempotent if
A2 = I
A2 = O
2A = I
A2 = A
/
A,B
B
C,D
A,B & D
/
A
B
C
A+B+C


Both A and R are true and R is correct explanation of A
Both A and R are true and R is not correct explanation of A
A is true, R is false
A is false, R is true
Description:

This test consist of 10 questions.Students should ideally take 10 minutes to complete the test. This test is useful for those students who are preparing for IIT JEE, AIEEE or any other engineering entrance test. This test consist of questions from Matrices and Determinants which, in general, is focused in AIEEE and IIT JEE. Last year 3 questions asked from this chapter in AIEEE. In Matrices and Determinants, Elementary operations are key topics and mostly application based questions are asked.

Discussion

there should be more questions!!

3069 days 14 hours 39 minutes ago

useful questions

4006 days 21 hours 55 minutes ago

good

4046 days 21 hours 32 minutes ago

good

4046 days 21 hours 32 minutes ago

repeated questions!!!!!!!!!

4337 days 18 hours 20 minutes ago

Good Questions.....

4546 days 11 hours 45 minutes ago 76 Members Recommend
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