⟩ The Tyndall Effect can be demonstrated when light is passed through which of the following
1. a colloidal suspension
2. supercritical water
3. aqueous solutions
4. mixtures of gasses
Answer: A
1. a colloidal suspension
2. supercritical water
3. aqueous solutions
4. mixtures of gasses
Answer: A
Which of the following two sets are disjoint? a) {1, 3, 5} and {1, 3, 6} b) {1, 2, 3} and {1, 2, 3} c) {1, 3, 5} and {2, 3, 4} d) {1, 3, 5} and {2, 4, 6}
Two sets are called disjoint if there _____________ is the empty set. a) Union b) Difference c) Intersection d) Complement
The union of the sets {1, 2, 5} and {1, 2, 6} is the set _______________. a) {1, 2, 6, 1} b) {1, 2, 5, 6} c) {1, 2, 1, 2} d) {1, 5, 6, 3}
The intersection of the sets {1, 2, 5} and {1, 2, 6} is the set ___________. a) {1, 2} b) {5, 6} c) {2, 5} d) {1, 6}
The function f(x)=x+1 from the set of integers to itself is onto. Is it True or False? a) True b) False
The g -1({0}) for the function g(x)= ⌊x⌋ is ________. a) {x | 0 ≤ x < 1} b) {x | 0 < x ≤ 1} c) {x | 0 < x < 1} d) {x | 0 ≤ x ≤ 1}
The inverse of function f(x) = x3 + 2 is __________. a) f -1 (y) = (y - 2) 1/2 b) f -1 (y) = (y - 2) 1/3 c) f -1 (y) = (y) 1/3 d) f -1 (y) = (y - 2)
The function f(x) = x3 is bijection from R to R. Is it True or False? a) True b) False
Let f and g be the function from the set of integers to itself, defined by f(x) = 2x + 1 and g(x) = 3x + 4. Then the composition of f and g is ________. a) 6x + 9 b) 6x + 7 c) 6x + 6 d) 6x + 8
Which of the following function f Z X Z → Z is not onto? a) f(a, b) = a + b b) f(a, b) = a c) f(a, b) = |b| d) f(a, b) = a - b