TN 12TH MATHS - Online Test
Q1. The value of 
is
is
Answer : Option D
Explaination / Solution:
Q2. The order of the differential equation of all
circles with centre at ( h, k ) and radius ‘a’ is
Answer : Option B
Explaination / Solution:
Q3. If α , β , and γ are the zeros of x3
+ px2 + qx + r , then 
is
is
Answer : Option B
Explaination / Solution:
Q4. If sin−1 x = 2 sin−1 α has a solution, then
Answer : Option A
Explaination / Solution:
Q5. A pair of dice numbered 1, 2, 3, 4, 5, 6 of a
six-sided die and 1, 2, 3, 4 of a four-sided die is rolled and the sum is
determined. Let the random variable X
denote this sum. Then the number of elements in the inverse image of 7 is
Answer : Option D
Explaination / Solution:
Q6. The length of the diameter
of the circle which touches the x -axis at the point (1,0) and passes through the point (2, 3)
Answer : Option C
Explaination / Solution:
Q7. In the set ℝ of real numbers ‘ * ’ is defined as follows. Which one of the
following is not a binary operation on ℝ ?
Answer : Option D
Explaination / Solution:
Q8. If 
, 
, 
are three unit vectors such
that is perpendicular to , and is parallel to then x ( x ) is equal to
, , are three unit vectors such
that is perpendicular to , and is parallel to then x ( x ) is equal to
Answer : Option B
Explaination / Solution:
No Explaination.
Q9. The point on the curve 6y = x3 + 2 at which y-coordinate changes 8 times as fast
as x-coordinate is
Answer : Option A
Explaination / Solution:
Q10. if 
, then 9I2 – A =
, then 9I2 – A =
Answer : Option D
Explaination / Solution:
