TN 12TH MATHS - Online Test
Q1.
The volume of a sphere is increasing in volume at the rate of 3π
cm3 / sec .
Answer : Option A
Explaination / Solution:
Q2. If | adj(adj A) |=| A |9 , then the order of the square matrix A is
Answer : Option B
Explaination / Solution:
Q3. A circular template has a radius of 10 cm. The
measurement of radius has an approximate error of 0.02 cm. Then the percentage
error in calculating area of this template is
Answer : Option B
Explaination / Solution:
Q4. in + in+1 + in+2 + in+3 is
Answer : Option A
Explaination / Solution:
Q5. The value of 
is
is
Answer : Option A
Explaination / Solution:
Q6. The order and degree of the differential
equation 
are respectively
are respectively
Answer : Option A
Explaination / Solution:
Q7. A zero of x3 + 64 is
Answer : Option D
Explaination / Solution:
Q8. The value of sin−1 (cos x), 0 ≤ x ≤ π is
Answer : Option C
Explaination / Solution:
Q9.
Let x be random
variable with probability density function
Answer : Option B
Explaination / Solution:
Q10. The equation of the circle
passing through (1, 5) and (4,1) and touching y -axis is x2 +
y2 − 5x − 6 y + 9 + λ (4x + 3y
−19) = 0 where λ is equal to
Answer : Option A
Explaination / Solution:
