CBSE 11TH MATHEMATICS - Online Test
Q1. is equal to
Answer : Option C
Explaination / Solution:
We have for a complex number x+iy the argument or amplitude is a value of satisfying
Q2.
Find the number of terms in the expansion of
Answer : Option A
Explaination / Solution:
Q3. If A , B , C be any three sets such that A∪B=A∪C and A∩B=A∩C , then
Answer : Option C
Explaination / Solution:
Q5. The solution set of 6x − 1 > 5 is :
Answer : Option A
Explaination / Solution:
Hence the solution set is
Q6. If three positive numbers a, b, c are in G. P. then log a, log b, log c are in
Answer : Option A
Explaination / Solution:
Q7. Mean deviation from the mean for the observations – 1 , 0 ,4 is
Answer : Option C
Explaination / Solution:
mean=−1+0+43=3/3=1M.D=1n∣∣∑(Xi−X¯)∣∣=2+1+33=2
Q8. If ( x , y ) are the coordinates of point in the plane , then 
represents
represents
Answer : Option C
Explaination / Solution:
The given determinant can be written as 2 
On expansion we get
2[3(8-y) - 4(5 - x) +1(5y - 8x)]
On simplifying the equation 2( - 4x+2y+4) = 0 represents a striaght line.
Q9. Let p and q be two propositions. Then the implication ∼(p↔q) is :
Answer : Option D
Explaination / Solution:
∼(p↔q)≡(p∧∼q)∨(q∧∼p)
Q10. The eccentricity of the hyperbola is
Answer : Option C
Explaination / Solution:
above equation can be written as,
comparing it with the standard equation we get a=3 and b=3
as c=
we get c= 3
and as e =
we get e =
