Maths - Online Test
Q1. A solid sphere of radius x cm is melted and cast into a shape of a solid cone of same radius. The height of the cone is
Answer : Option C
Explaination / Solution:
Q2. Which of the following is incorrect?
Answer : Option A
Explaination / Solution:
No Explaination.
Q3. If f (x) = 2x2
and g(x) = 1/3x then f o g is
Answer : Option C
Explaination / Solution:
Q4. An A.P. consists of 31 terms. If its 16th term is m, then the sum of all the terms of this A.P. is
Answer : Option C
Explaination / Solution:
Q5. The values of a and b
if 4x 4 − 24x 3 + 76x 2 +
ax +b is a perfect square are
Answer : Option C
Explaination / Solution:
Q6. 
In the given figure, PR
= 26 cm, QR = 24 cm. ∠PAQ = 90° ,
PA=6 cm and QA = 8 cm. Find ∠PQR
Answer : Option D
Explaination / Solution:
Q7. The equation of a line
passing through the origin and perpendicular to the line 7x − 3y
+ 4 = 0 is
Answer : Option C
Explaination / Solution:
Q8. If the ratio of the height of a tower and the length of its shadow is √3 : 1 then the angle of elevation of the sun has measure
Answer : Option D
Explaination / Solution:
Q9. A frustum of a right circular cone is of height 16cm with radii of its ends as 8cm and 20cm. Then, the volume of the frustum is
Answer : Option A
Explaination / Solution:
Q10. The probability a red
marble selected at random from a jar containing p red, q blue and
r green marbles is
Answer : Option B
Explaination / Solution:
