class 11 maths
Authored by vijay dubey
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12th Grade
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12 questions
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1.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
The marks obtained by a student of Class XI in first and second terminal examination are 62 and 48, respectively. Find the minimum marks he should get in the annual examination to have an average of at least 60 marks.
(a) 50
(b) 60
(c) 70
d) 80
2.
MULTIPLE CHOICE QUESTION
2 mins • 1 pt
Let n A m ( ) = and n B n ( ) = .
Then, the total number of non-empty relations that can be defined from A to B is
m^n
2^(mn) - 1
3.
MULTIPLE CHOICE QUESTION
1 min • 1 pt
If digits 3 and 4 come together, then number of ways to find mobile number (when repetition is not allowed), is
220
300
240
200
4.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
Let a complex number z, |z| ≠ 1, satisfy log1/√2 [(|z| + 11) / (|z| – 1)2] ≤ 2.
Then, the largest value of |z| is equal to
6
7
5.
MULTIPLE CHOICE QUESTION
5 mins • 1 pt
Let a relation R be defined by R = {(4, 5); (1, 4); (4, 6); (7, 6); (3, 7)} then R−1 o R is ________.
{(1, 1); (4, 4); (4, 7); (4,9), (7, 7); (3, 3)}.
{(2,2); (4, 4); (4, 7); (7, 4), (7, 7); (3, 3)}.
{(1, 1); (4, 4); (4, 7); (7, 4), (7, 7); (3, 3)}.
{(1, 1); (11,13); (4, 7); (7, 4), (7, 7); (3, 3)}.
6.
MULTIPLE CHOICE QUESTION
3 mins • 1 pt
3g of activated charcoal was added to 50 mL of acetic acid solution (0.06N) in a flask. After an hour it was filtered and the strength of the filtrate was found to be 0.042 N. The amount of acetic acid adsorbed (per gram of charcoal) is :
18mg
16mg
36mg
30mg
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
The compound of Xenon with zero dipole moment is :
(1)XeO3
(2) XeO2
(3) XeF4
(4) XeOF4
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