⟩ The use of electricity to decompose molten sodium chloride into its component elements is an example of
1. electrolysis
2. galvanization
3. a voltaic cell
4. electroplating
Answer: ELECTROLYSIS
1. electrolysis
2. galvanization
3. a voltaic cell
4. electroplating
Answer: ELECTROLYSIS
The complement of the set A is _____________. a) A - B b) U - A c) A - U d) B - A
The difference of {1, 2, 3} and {1, 2, 5} is the set _________. a) {1} b) {5} c) {3} d) {2}
The bit string for the set {2, 4, 6, 8, 10} (with universal set of natural numbers less than or equal to 10) is ____________________. a) 0101010101 b) 1010101010 c) 1010010101 d) 0010010101
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)