Which one of the following radioactive radiation consists of high-energy rays?
Anonymous Quiz
18%
Alpha rays
6%
Beta rays
73%
Gamma rays
3%
Beta particles
In Niels Bohr's model of the atom, electrons are said to occupy specific energy levels or orbits around the nucleus. What is the primary feature of these orbits?
Anonymous Quiz
28%
Electrons can exist anywhere around the nucleus.
52%
Electrons can only occupy certain allowed energy levels.
13%
Electrons are stationary and do not move.
8%
Electrons can only be found in the nucleus.
❤2
What is the electron configuration for magnesium(Mg) metal? Z = 12
Anonymous Quiz
4%
1s²2s²2p⁶3s¹
77%
1s²2s²2p⁶3s²
5%
1s²2s²2p⁵3s¹
14%
1s²2s²2p⁶3s²
❤3
What is the core electron configuration of calcium (Ca) metal? Z = 20.
Anonymous Quiz
6%
[Ne]4s²
78%
[Ar]4s²
7%
[Ar] 4s¹
9%
[Ar] 4s² 3d¹
❤3
What is the next term in the sequence: 1, 4, 7, 10, ......?
Anonymous Quiz
0%
15
10%
12
8%
14
82%
13
❤1
What is the common difference in the arithmetic sequence: 1, 4, 7, 10, ........?
Anonymous Quiz
0%
1
4%
2
93%
3
4%
4
Which one of the following sequence is an arithmetic sequence?
Anonymous Quiz
16%
1, 4, 9, 16, 25, .......
11%
1, 8, 27, 64, 125, ........
10%
1, 8, 18, 32, 50, .........
64%
1, 6, 11, 16, 21, ..........
What is the possible value of t in the sequence 100, 98, 94, 86, t, 38, . . . ?
Anonymous Quiz
12%
78
22%
82
51%
70
15%
54
What is the next number in the sequence: 2, 6, 12, 20, 30, ...?
Anonymous Quiz
18%
40
68%
42
9%
44
5%
46
What is the next term in the sequence 1, 1, 2, 3, 5, 8, 13, ...?
Anonymous Quiz
52%
21
15%
14
17%
20
17%
18
Which one of the following is the sum of all even natural numbers less than 99?
Anonymous Quiz
13%
2550
32%
5100
23%
5050
32%
2450
What is the value of x in the sequence -1, 0, 2, 6, x, 30, 62, ...?
Anonymous Quiz
8%
10
59%
14
20%
16
13%
15
If x - 2 is a factor of f(x) = 3x⁴ - 8x² - kx + 6, then which of the following is equal to the value of k ?
Anonymous Quiz
10%
-11
49%
11
33%
22
8%
-22
What are the values of a ànd k respectively so that x - 2 is a factor of f(x) = x⁴ - 2ax³ + ax² - x + k and f(-1) = 3 ?
Anonymous Quiz
30%
1 and -2
30%
-1 and -2
19%
-1 and 2
22%
1 and -2
Which one of the following can be the zero of a polynomial function p(x) = 4x² - 25 ?
Anonymous Quiz
13%
2/5
18%
5
31%
-2/5
38%
-5/2
Which one of the following statement is NOT true about the zeros of a polynomial function?
Anonymous Quiz
14%
For a polynomial function f and a real number c, if f(c) = 0; then c is a zero of f.
11%
If x - c is a factor of f(x), then c is a zero of f(x).
39%
A polynomial function can have more zeros than its degree.
36%
A polynomial function of degree 4 may not have any real zero.
Consider the polynomial function p(x) = (x + 6)(x - 3)², then which of the following is true about zeros and its multiplicity?
Anonymous Quiz
5%
6 is a zero of multiplicity 1.
31%
-3 is a zero of multiplicity 2.
21%
2 is a zero of multiplicity 3.
43%
3 is a zero of multiplicity 2.