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Abdulrazak umar Usman
Questions (125)
Three point charges Q+10x10-12C, Q₂= -6 x 10-12C, and Q3+10x10-12C, are situated at the corners of an equilateral triangle of
1 answer
66 views
What is the combined resistance of a 6-ohms resistor which is connected in series with a parallel Arrangement of two resistors
1 answer
65 views
Particle that contains 8 protons, 9 neutrons and 7 electrons could be written as
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32 views
(c) 120
1. Particle that contains 8 protons, 9 neutrons and 7 electrons could be written as
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39 views
(c) 120
1. Particle that contains 8 protons, 9 neutrons and 7 electrons could be written as (d) 20 (3) 10 (6) 0 2. What is the
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33 views
Question.
Which blockchain network is designed to provide a decentralized, censorship-resistant domain name system (DNS)? (A)
1 answer
58 views
Question.
Which blockchain network is designed to provide a decentralized, censorship-resistant domain name system (DNS)?
1 answer
79 views
What is the function of a "cold wallet" in the context of cryptocurrency storage?
1 answer
55 views
What is the purpose of a timestamp" in a blockchain transaction?
1 answer
54 views
Q10. Given that the roots of the equation 2x^{2}=-2x+3 are Alpha and Beta. The equations whose roots are 1/alpha and 1/Beta is
Q1
1 answer
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Q10. Given that the roots of the equation 2x^{2}=-2x+3 are a and 3. The equations whose roots are 1/a. and 1/b if a
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34 views
Q10. Given that the roots of the equation 2x^{2}=-2x+3 are a and 3. The equations whose roots are 1/a. and 1/b is
1 answer
32 views
Q10. Given that the roots of the equation 2x^{2}=-2x+3 are a and 3. The equations whose roots are 1/a.
1 answer
32 views
Q9. Suppose the equation x^{2}-3x+1=q(x-3) has equal roots. The possible value of o are
1 answer
35 views
Q8. Expand \frac{1}{(1+7x)^{1}} in ascending powers of x as far as the term in x^{2}
(A
1 answer
116 views
Q7. Expand (5-3x)^{3} by Pascal's triangle
(A) 125+225x+135x^{2}+27x^{3}+\cdot\cdot\cdot (C)
1 answer
76 views
Q6. The relationship between combination and permutation is
(A) nPr (B) nPr+1 (C) nPr /r! (D) nPr/r
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65 views
Q6. The relationship between combination and permutation is
1 answer
34 views
Q5. Evaluate \frac{(4n+1)!}{(4n-1)!}
1 answer
33 views
Q4. The nth term 7, in terms of n for the sequence: 3,5,7,9,...is
1 answer
48 views
Q3. Which term of the sequence \overline{2187,729,243,...is1/9=?
(A)10 (B)11 (C)12 (D)13
1 answer
57 views
The sum of the first 16 terms of the sequence: 2,5,8,11,14,.........is (A) 196 (B)197 (C)198 (D)199
1 answer
46 views
The sum of the first 16 terms of the sequence: 2,5,8,11,14,.........is
1 answer
34 views
Q2. The sum of the first 16 terms of the sequence: 2,5,8,11,14,.........s
1 answer
47 views
Q2. The sum of the first 16 terms of the sequence : 2,5,3,11,14,...,is
1 answer
32 views
Q1. Positive and negative natural numbers are called
(A) (C) Irrational numbers Q2. The sum of the first 16 terms of the sequence
1 answer
62 views
4a. Draw the rock cycle. State two characteristics of the three (3) main rock types
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4a. Draw the rock cycle. State two characteristics of the three (3) main rock types
b. State three (3) characteristics of a
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61 views
3a. Why do rocks formed at greater depths weather easily under surface conditions?
b. With equations, state what is leaching c.
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61 views
1a. With equations, explain (1) Oxidation and (il) Dehvaration
b. How does (1) rock type (ii) slope (iii) climate influence
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51 views
1a. With equations, explain (1) Oxidation and (il) Dehvaration
5. How does (1) rock type (ii) slope (iii) climate influence
1 answer
52 views
1a. With equations, explain (¡) Oxidation and (¡¡) Dehydration
b. How does (1) rock type (ii) slope (iii) climate influence
1 answer
69 views
1a. With equations, explain (1) Oxidation and (il) Dehvaration
5. How does (1) rock type (ii) slope (iii) climate influence
1 answer
43 views
Question 19 to 30.
19. Pick out an electron charge-to-mass ratio ratio's value from the options. (a) 1.758820 × 1011 Ckg-1 (b)
1 answer
55 views
Question 1 to 17.
1. According to Bronsted - Lowry definition, an acid is a (a) Proton acceptor (b) proton donor (c) electron
1 answer
109 views
Question 51 to 70.
Q51) London force is also known as (A) dispersion force (B) Vander-Waals forces (C) hydrogen bonding (D)
1 answer
85 views
Q35) For the reaction (4HBr+O_{2}=2H_{2}O+2Br_{2}), the order of the reaction with respect to [O_{2}] is 1 and che overall
Questi
1 answer
67 views
Question 35 to 50.
Q35) For the reaction (4HBr+O_{2}=2H_{2}O+2Br_{2}), the order of the reaction with respect to [O_{2}] is 1 and
1 answer
99 views
Question 23 to 34.
Q23) The commonest forros of equilibrium constants are and... ....(A) k_{P} and Kc (B) Ka and Kc (C) K_{D} and
1 answer
62 views
Question 21 to 22.
Q21) Calculate the change in internal energy of a system that absorbs 10kJ of heat and does 2kJ of work. ( A)
1 answer
59 views
Question 7 to 20
Q7) All are periodic properties except (A) ionization energy (B) electronegativity ( dipole rooment (D) electron
1 answer
61 views
Question 1 to 6.
Q1.In Mendeleev's periodic table, elements are arranged in the increasing order of their (A) numbers of neutrons
1 answer
107 views
Question 1 to 7.
Q1.In Mendeleev's periodic table, elements are arranged in the increasing order of their (A) numbers of neutrons
1 answer
106 views
19........... Is the set of defined rules that allows devices to communicate across the network.
1 answer
52 views
18............. is a carrier used to interconnect computers in a network, such as coaxial cable, twisted pair and optical fibre
1 answer
77 views
17........... is the name of the network topology in which there are bidirectional links between each possible node
1 answer
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2. a.
Briefly explain the classes of language translators given at-least an example for each b. Define communication software and
1 answer
90 views
1. a. Copy and complete the following table of difference between FTP and TFTP
S.N. Parameter FTP TFTP Operation Authentication
1 answer
76 views
24. TCP offers one of following services to the
processes at the application layer a) linkage delivery service b) optimization
1 answer
109 views
Question 23
23. Which of the following specifies the format of the packets that are sent and received among router and end
1 answer
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Question 23 to 24.
23. Which of the following specifies the format of the packets that are sent and received among router and end
1 answer
85 views
22. Computers that manage network resources and provide centralized storage areas are referred to as
a) workstations b) servers
1 answer
63 views
Question 22 to 24.
22. Computers that manage network resources and provide centralized storage areas are referred to as ) a
1 answer
78 views
21. The name of the program that displays the on- screen elements with which a user interacts is
a) Software System b) utility
1 answer
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21. The name of the program that displays the on- screen elements with which a user interacts is
a) Software System a) utility
1 answer
80 views
20. A trackball is an example of the common computer
a) Input devices b) Output devices devices c) Processing d) input and output
1 answer
76 views
Question 20 to 21
20. A trackball is an example of the common computer a) Input devices b) Output devices devices c) Processing
1 answer
88 views
Question 21 to 24.
21. The name of the program that displays the on- screen elements with which a user interacts is a) Software
1 answer
93 views
Question 2o to 24.
20. A trackball is an example of the common computer a) Input devices b) Output devices c)Processing devices
1 answer
98 views
Question 21 to 24.
20. A trackball is an example of the common computer a) Input devices b) Output devices c)Processing devices
1 answer
92 views
Question 20 to 24.
20. A trackball is an example of the common computer a) Input devices b) Output devices c)Processing devices
1 answer
126 views
Question 15 to 19.
15. The task of performing operations like arithmetic and logical operations s is called........... 16........
1 answer
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Question 1 to 14.
1 ............is the wit of the computer that performs the Arithmetic, moving, and processing of information 2.
1 answer
53 views
Question 29 to 30.
29. The following are animals that exhibit internal fertilization except a) Human b) Cow c) Dog d) Fish 30.
1 answer
75 views
Question 21 to 28.
21. The upward movement of water and nutrients in plants is primarily driven by_a) Capillary action b) Gravity
1 answer
66 views
Question 16 to 20.
16. When organisms get rid of unwanted materials from their bodies they carryout a) urination b) Faeces c)
1 answer
68 views
Question 16 to 30.
16. When organisms get rid of unwanted materials from their bodies they carryout a) urination b) Faeces c)
1 answer
73 views
egulation of a a) Homeostasis
nearly constant b) Hormone internal c) Enzyme environment is d) Humidity
1 answer
62 views
Question 10.
10. The first-generation computer is known to have used vacuum tubes and............................
1 answer
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Question 9.
9. Automation is one the characteristics of computer that makes it to take decision of its own. TRUE FALSE
1 answer
57 views
Question 8.
.................................8. are the devices that is used to print single or multiple-colored images and
1 answer
60 views
Question 7.
7. ...................is the process of producing useful information for the user.
1 answer
56 views
Question 6.
6. .....................Is the unit responsible for converting the data received from the user into computer
1 answer
65 views
Question 5.
5. The general speed of microprocessor chip is measured in...............
1 answer
60 views
Question 4.
4. ALU performs Logical operations in addition to....................
1 answer
61 views
Question 3.
3. Providing the user interface, controlling the computer's resources and running of programs are some functions
1 answer
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Q3.
3. Providing the user interface, controlling the computer's resources and running of programs are some functions
1 answer
51 views
Question 2.
2. Word processing package is a type of software that can be described as an..................
1 answer
49 views
Question 1.
1. ............................is an input device that utilizes a light-sensitive
1 answer
59 views
Question 28
28. The pressure and absolute temperature of the gas sample whose volume is fixed are related with one or more of the
1 answer
92 views
Question 27 to 35.
27. A sheet of copper has an area of 500cm2 at what is the area at 500C? For copper, linear expansibility is
1 answer
59 views
Question 17 to 26.
17. A gardener pushes a wheelbarrow with a force of 100N. If the handle of the wheel barrow makes an angle
1 answer
79 views
Question 14 to 16.
14. The potential energy in an elastic string of force constant k which has been extended by x metres is
1 answer
64 views
Question 9 to 13
9. The moment of a force about a point is defined as the: (a) product of force and its distance from fulcrurn
1 answer
78 views
Question 9 to 16.
9. The moment of a force about a point is defined as the: (a) product of force and its distance from fulcrurn
1 answer
74 views
Question 1 to 8.
1.A man throws a ball vertically upward with an initial speed of 20ms^{-1}. What is the maximum height reached
1 answer
80 views
15. A gas does 5J of work while expanding adiabatically. What is the change in internal energy? a. 6J b. -6J c. 5/ d. -5/
1 answer
55 views
Question 13 to 14.
13.How many molecules are there 70cm^{3} of benzene? For benzene, \rho=0.88g/cm^{3} and M = 78kg/kmol.
1 answer
61 views
12. The thermodynamic process carried out at constant pressure is known as
a. isothermal b. adiabatic c. isobaric d. isovolumic
1 answer
65 views
Question 10 to 11.
10. Compute the volume change of a solid copper cube of initial volume 6.4\times10^{-5}m^{3} when subjected to
1 answer
89 views
Question 10 to 12.?
10. Compute the volume change of a solid copper cube of initial volume 6.4\times10^{-5}m^{3} when subjected
1 answer
75 views
Question 10 to 12.
10. Compute the volume change of a solid copper cube of initial volume 6.4\times10^{-5}m^{3} when subjected to
1 answer
73 views
Question 10 to 12
10. Compute the volume change of a solid copper cube of initial volume 6.4\times10^{-5}m^{3} when subjected to
1 answer
64 views
10. Compute the volume change of a solid copper cube of initial volume 6.4\times10^{-5}m^{3} when subjected to a pressure of
20\t
1 answer
91 views
Question 1 to 9
1. Time can be considered of all of the followings except? Event from past, present and future b. What clocks
1 answer
91 views
Question37 to 40.
37. The pH of pure water is neutral, the best explanation for this is (A) in pure water, the [H] and [OH]
1 answer
192 views
Question
35. Exothermic enthalpy changes are indicated with (A) positive AH value (B) negative AH value (C) ± AH value (D) none
1 answer
54 views
Question 8. The mass of NaOH required to prepare 250~cm^{3} of 0.1M NaOH is?
(A) 10g (B) 4g (C) 40g (D) 1g
1 answer
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8. The mass of NaOH required to prepare 250~cm^{3} of 0.1M NaOH is (A) 10g (B) 4g (C) 40g (D) 1g
1 answer
77 views
7. To prepare 500~cm^{3} of 0.15 mol/dm³ sulphuric acid from a stock solution of 2.0~mol/dm^{3} sulphuric acid. The volume of
1 answer
81 views
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