: 08023429251 ||
: 08023429251
This practice exam platform is designed with JAMB UTME past questions with the aim of helping you prepare for your exams as you embark on your quest for admission into the university.
0 of 40 questions completed Questions:
Welcome to ZAMGIST JAMB CBT Test Page for Biology, I hope you are fully ready? you are to answer 40 Questions in 27 minutes. Best of Luck!
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
0 of 40 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0) A plant which grows on another plant without apparent harm to the host plant is called Given the equation: The process represented by the above equation is….? GIVEN THE EQUATION: 6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll) The oxygen given off during the above process is derived from…? ONE OF THE FUNCTION OF XYLEM IS : ?? PEOPLE SUFFERING FROM MYOPIA …. People suffering from myopia The cilia in paramecium are use for Euglena may be classified as a plant because it A trawler on a fishing trip caught a type of animal with hairs on its body. This animal could have been which of these type of skeleton is most appropriate for a cockroach? One of the major ways in which the blood is able to defend the body against disease causing organisms is…? One of the major ways in which the blood is able to defend against disease is clumping. Which of the following is not a transmitable character in plants? Haemophilia is any of several hereditary illnesses that impact the body’s ability to control bleeding usually passed from mother to son. Inheritable character/features possessed by an organism can be referred to as? Trait is an inheritable character/inheritable feature possessed by an organism. One of the following is a process of transmission of hereditary characteristics by chromosomes Dictating the formation of a protein by a gene in a chromosome is a process of transmitting hereditary characteristics The attachment of the embryo to the wall of the uterus is called Implantation is the attachment of embryo to the uterus wall. Which of the reproductive system in mammals secretes a part of the seminal fluid which raises the pH of the fluid in the female reproductive system? Cowper’s gland is a reproductive system in male which secretes a part of the seminal fluid which raises the pH of the fluid in the female reproductive system. The part labelled a in the above diagram is used for…? Operculum or gill cover helps the tilapia fish in gaseous exchange. The tilapia fish can be classified under chordata phylum in the animal kingdom. One important characteristics of green plant is that they One of the important characteristics of green plant is that they can manufacture their food (Autotrophic). A virus can sometimes be regarded as a living organism because it A virus is regarded as animate is because it can reproduce in living cells. It can also be inanimate when it is not in living cells. A population is best described as A population is described as the total number of organisms of the same species living together in a given area at a particular time. The number of times an organism occurs within a given area of a habitat is referred to as Population frequency refers to the number of times an organism occurs within a given area of a habitat Reading the verdict of a case by a magistrate is an example of A voluntary action is controlled by the cerebrum in the forebrain which is the largest part of the brain. Which of the following structures controls the activities of the living cell? Nucleus is a part of living things which controls activities due to the presence of the DNA in it. Which of the following are components of glomerular filtrate? Glomerular filtrate contains H22O, glucose, salts and urea and it is identical to blood plasma that lacks most proteins. The sum total of adaptive changes from pre-existing form that have taken place over a long time resulting in diversity of forms, structures and functions among organism is referred to as Organic evolution is the sum total of adaptive changes from pre-existing or old form that have taken place over a long time resulting in diversity of forms, structures and functions among organisms. The specific portion of a habitat which is occupied by a particular species is referred to as Ecological niche refers to the specific portion of a habitat which is occupied by a particular species or organism. It is the functional position of an organism within the community. In plants, respiration occurs in Respiration can either be aerobic or anaerobic respiration. Hence, in plants, all living cells take part in a form of respiration. Plant respiration is a rather diffuse process. It occurs all over the plant. Which of the following is an example of discontinuous variation? Discontinuous variation is the differences of variations in behaviour by which organisms can be grouped into 2 or more classes within a population without any intermediates among them e.g Behaviour, ability to roll tongue. Which of the following type of soil has the highest water retaining capacity? Clay soil is the soil with highest water retaining capacity. Rabbits cannot survive in an aquatic habitat because they have Rabbits does not have the adaptive features of an aquatic habitat like gills therefore, it cannot survive in an aquatic habitat. Which of the following substances pass through the root cell membrane by osmosis? Water passes through the root cell membrane of plant in order for osmosis to take place. Trees in Savanna habitats usually have thick bark which mainly. Rate of transpiration is reduced in savannah forest due to thick barks of the trees in savannah forest. Competition among individuals of a population increases the Competition one of the biotic factors in ecological factors involves the interactions among two organisms of the same species/different species which outgrows the other and survives while the other cannot grow or survive In natural selection, Darwin proposed that evolution occurred because of the following conditions except In natural selection, Darwin proposed that evolution occurred because of the following conditions except food and other needs are abundant Which of the following substances has the highest amount of energy in joules per unit weight? Fats provides more energy to animal than carbohydrates therefore containing the highest amount of energy in joules per unit weight. Which of the following pairs of scientists discovered the Rhesus factor in human blood? Landsteiner and Lavine are scientist, they discovered the Rhesus factor in human blood The study of an individual organism or a single species of organism and its environment is Autecology is the study of an individual organism or a single specie of organism and no environment Which of the following is a nitrifying bacterium? Nitrobacter are chemoautrophic organisms found in soil and water responsible for the oxidation of ammonium to nitrite and nitrite to nitrate. Which of the following is the effect of using artificial pollination in plant breeding? One of the effect of using artificial pollination in plant breeding is that it improves the variety of crops.
Biology Free CBT Practice
Quiz-summary
Information
Results
Categories
1. Question
2. Question
6CO2 + 6H2O → C6H12O6 + 6O2 {Under sunlight & Chlorophyll)
3. Question
4. Question
5. Question
6. Question
7. Question
8. Question
9. Question
10. Question
11. Question
Hint
12. Question
Hint
13. Question
Hint
14. Question
Hint
15. Question
Hint
16. Question
Hint
17. Question
Hint
18. Question
The above organism can be classified under which phylum in the animal kingdom
Hint
19. Question
Hint
20. Question
Hint
21. Question
Hint
22. Question
Hint
23. Question
Hint
24. Question
Hint
25. Question
Hint
26. Question
Hint
27. Question
Hint
28. Question
Hint
29. Question
Hint
30. Question
Hint
31. Question
Hint
32. Question
Hint
33. Question
Hint
34. Question
Hint
35. Question
Hint
36. Question
Hint
37. Question
Hint
38. Question
Hint
39. Question
Hint
40. Question
Hint
Chemistry CBT Practice
Quiz-summary
0 of 40 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
Information
Welcome to ZAMGIST JAMB CBT Test Page for Chemistry, I hope you are fully ready? you are to answer 40 Questions in 27 minutes.
Best of Luck!
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 40 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- 31
- 32
- 33
- 34
- 35
- 36
- 37
- 38
- 39
- 40
- Answered
- Review
-
Question 1 of 40
1. Question
Which of the following will give a precipitate with an aqueous solution of copper (I) chloride?
Correct
Incorrect
-
Question 2 of 40
2. Question
The IUPAC name for CH33CH22COOCH22CH33 is
Correct
Incorrect
-
Question 3 of 40
3. Question
A certain hydrocarbon on complete combustion at s.t.p produced 89.6dm3 of CO2 and 54g of water. The hydrocarbon should be
Correct
Incorrect
Hint
CxHy + (x + y/4)O2 → x CO2 + y/2 H2O
89.6 dm3 → x moles CO2
22.4 dm3 → 1 mole CO2
x = 89.622.4
= 4 moles CO2
54g of H2O → k moles H2O
18g H2O → 1 mole H2O
k = 5418
= 3 moles H2O
From the equation above,
x = 4
k = y/2 = 3
y/2 = 3 ⟹ y = 6
∴ The hydrocarbon CxHy = C4H6
-
Question 4 of 40
4. Question
2-methylprop-1-ene is an isomer of
Correct
Incorrect
-
Question 5 of 40
5. Question
Hydrocarbons which will react with Tollen’s reagent conform to the general formula
Correct
Incorrect
-
Question 6 of 40
6. Question
A secondary alkanol can be oxidized to give an?
Correct
Incorrect
Hint
secondary alkanols (alcohols) can be oxidised to alkanones (ketones)
-
Question 7 of 40
7. Question
The IUPAC name of the compound CF3CHBrCl is
Correct
Incorrect
-
Question 8 of 40
8. Question
A synthetic rubber is not obtained from the polymerization of
Correct
Incorrect
-
Question 9 of 40
9. Question
Burning magnesium ribbon in air removes which of the following
(i) oxygen (ii) nitrogen (iii) argon and (iv) carbon(iv)oxide?Correct
Incorrect
-
Question 10 of 40
10. Question
Which of the following is the best starting material for the preparation of oxygen? Heating of trioxonitrate (v) with
Correct
Incorrect
-
Question 11 of 40
11. Question
Which of the following metals is the most essential in the regulation of blood volume, blood pressure and osmotic equilibrium?
Correct
Incorrect
-
Question 12 of 40
12. Question
Which of the following alkaline earth metals react more spontaneously with water?
Correct
Incorrect
Hint
The Group 2 metals become more reactive towards water as you go down the Group.
-
Question 13 of 40
13. Question
When chlorine water is exposed to bright sunlight, the following products are formed
Correct
Incorrect
-
Question 14 of 40
14. Question
Which process(es) is/are involved in the turning of starch iodide paper blue-black by chlorine gas?
Correct
Incorrect
-
Question 15 of 40
15. Question
Which of the following is a set of neutral oxides?
Correct
Incorrect
-
Question 16 of 40
16. Question
SO33 is not directly dissolved in water in the industrial preparation of H22SO44 by the contact process because
Correct
Incorrect
-
Question 17 of 40
17. Question
Which of the following statements does not show Rutherford’s account of Nuclear Theory? An atom contains a region
Correct
Incorrect
Hint
Rutherford’s account of Nuclear theory does not include the fact that atoms contain a massive region and cause deflection of from projectiles.
-
Question 18 of 40
18. Question
Elements X and Y have electronic configurations 1s222s222p44 and 1s222s222p663s223p11 respectively. When they combine, the formula of the compound formed is
Correct
Incorrect
-
Question 19 of 40
19. Question
By what amount must the temperature of 200cm33 of Nitrogen at 27°C be increased to double the pressure if the final volume is 150cm33 (Assume ideality)
Correct
Incorrect
Hint
Parameters given:
V11 = 200 cm33; T11 = 27 + 273 = 300K.
V22 = 150 cm33; T22 = ?
P22 = 2P11.
Using the Ideal Gas Equation:
P1V1T1=P2V2T2P1V1T1=P2V2T2
P1×200300=2P1×150T2P1×200300=2P1×150T2
23=300T223=300T2
T22 = 450K.
= 450K – 273K
= 177°C
177 – 27 = 150
That is the amount by which T1 must be increased.
-
Question 20 of 40
20. Question
The combustion of carbon(ii)oxide in oxygen can be represented by equation.
2CO + O22 → 2CO22
Calculate the volume of the resulting mixture at the end of the reaction if 50cm33 of carbon(ii)oxide was exploded in 100cm33 of oxygenCorrect
Incorrect
-
Question 21 of 40
21. Question
When ammonia and hydrogen ion bond together to form ammonium ion, the bond formed is called
Correct
Incorrect
Hint
When ammonia and hydrogen ion go into bonding, they form ammonium ion with a one dative covalent bond and three covalent bonds.
-
Question 22 of 40
22. Question
Which of the following represents the kind of bonding present in ammonium chloride?
Correct
Incorrect
-
Question 23 of 40
23. Question
Consider the reaction
A(s)(s) + 2B(g)(g) → 2C(aq)(aq) + D(g)(g)
What will be the effect of a decrease in pressure on the reaction?Correct
Incorrect
Hint
Given: The equation below
A(s)(s) + 2B(g)(g) → 2C(aq)(aq) + D(g)(g)
There are same amount of particles on both sides, so a decrease in the pressure on the rates of forward and backward reaction are not affected -
Question 24 of 40
24. Question
For the general equation of the nature
xP + yQ ⇌ mR + nS, the expression for the equilibrium constant isCorrect
Incorrect
Hint
Given:
xP + yQ ⇌ mR + nS
Let us assume they are all in aqueous solutionk = [R]m[S]n[P]x[Q]y
-
Question 25 of 40
25. Question
Which of the following reactions is an oxidation process?
Correct
Incorrect
-
Question 26 of 40
26. Question
If acidified Potassium Dichromate(VI) (K22Cr22O77) acts as oxidizing agent, color changes from
Correct
Incorrect
Hint
Potassium dichromate is an oxidising agent in organic chemistry. It is used to oxidize alcohols.
In an aqueous solution the color change exhibited can be used to test for distinguishing aldehydes from ketones. Aldehydes reduce dichromate from the +6 to the +3 oxidation state, changing color from orange to green. This color change arises because the aldehyde can be oxidized to the corresponding carboxylic acid.
-
Question 27 of 40
27. Question
The heat of formation of ethene, C22H44 is 50 kJmol−1−1, and that of ethane, C22H66 is -82kJmol−1−1. Calculate the heat evolved in the process:
C22H44 + H22 →→ C22H6
Correct
Incorrect
-
Question 28 of 40
28. Question
Which of the following statements about catalyst is false?
Correct
Incorrect
-
Question 29 of 40
29. Question
Which of the following does not support the fact that air is a mixture?
Correct
Incorrect
-
Question 30 of 40
30. Question
What technique is suitable for separating a binary solution of potassium chloride and potassium trioxochlorate (V)?
Correct
Incorrect
-
Question 31 of 40
31. Question
At 27°C, 58.5g of sodium chloride is present in 250cm33 of a solution. The solubility of sodium chloride at this temperature is?
(molar mass of sodium chloride = 111.0gmol−1−1)Correct
Incorrect
Hint
Given the Mass of the salt = 58.5g
Volume = 250 cm33 = 0.25 dm33
Mass concentration = MassVolumeMassVolume
= 58.50.2558.50.25 = 234 gdm−3−3
Solubility (in moldm−3−3 = 234111234111
= 2.11 moldm−3−3
≊≊ 2.0 moldm−3
-
Question 32 of 40
32. Question
Which of the following properties increases from left to right along the period but decreases down the group in the Periodic Table?
i. Atomic Number ii. Ionization energy iii. Metallic character iv. Electron affinityCorrect
Incorrect
Hint
Ionization energy and electron affinity increase across a period, and decrease down a group.
-
Question 33 of 40
33. Question
The molecular shape and bond angle of water are respectively
Correct
Incorrect
-
Question 34 of 40
34. Question
Na22CO33 + 2HCl →→ 2NaCl + H22O + CO22
The indicator most suitable for this reaction should have a pH equal to
Correct
Incorrect
Hint
Methyl orange is the best indicator for the reaction with range 3.1 – 4.4.
-
Question 35 of 40
35. Question
A radioactive nucleus has a half-life of 20 years, starting with 100,000 particles, how many particles will be left exactly at the end of 40 years
Correct
Incorrect
Hint
Given:
t_{\frac{1}{2}_{\frac{1}{2} = 20 years
After the first 20 years, half of the substance (12×100,000=50,00012×100,000=50,000) will have decayed. Hence, we have 100,000 – 50,000 = 50,000 particles left.
After the second 20 years (being 40 years in all), half of the remaining substance (12×50,000=25,00012×50,000=25,000) will have decayed.
Remaining particles after 40 years = 50,000 – 25,000
= 25,000 particles.
-
Question 36 of 40
36. Question
Which two gases can be used for the demonstration of the fountain experiment?
Correct
Incorrect
-
Question 37 of 40
37. Question
Which of the following pollutants will lead to the depletion of ozone layer?
Correct
Incorrect
-
Question 38 of 40
38. Question
Which of the following describes the chemical property of acids?
Correct
Incorrect
-
Question 39 of 40
39. Question
Which of the following pairs cannot be represented with a chemical formula?
Correct
Incorrect
-
Question 40 of 40
40. Question
Consider the equation below:
Cr22O2−772− + 6Fe2+2+ + 14H++ →→ 2Cr3+3+ + 6Fe3+3+ + 7H22O.
The oxidation number of chromium changes from
Correct
Incorrect
Hint
Cr22O2−772− + 6Fe2+2+ + 14H++ →→ 2Cr3+3+ + 6Fe3+3+ + 7H22O
The oxidation of Cr in Cr22O2−772− :
Let the oxidation of Cr = x;
2x + (-2 x 7) = -2 ⟹⟹ 2x – 14 = -2
2x = 12 ; x = +6
Hence, the change in oxidation of Cr = +6 to +3
Physics CBT Practice
Quiz-summary
0 of 30 questions completed
Questions:
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
Information
Welcome to ZAMGIST JAMB CBT Test Page for Physics, I hope you are fully ready? you are to answer 40 Questions in 27 minutes.
Best of Luck!
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading...
You must sign in or sign up to start the quiz.
You have to finish following quiz, to start this quiz:
Results
0 of 30 questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 points, (0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- 9
- 10
- 11
- 12
- 13
- 14
- 15
- 16
- 17
- 18
- 19
- 20
- 21
- 22
- 23
- 24
- 25
- 26
- 27
- 28
- 29
- 30
- Answered
- Review
-
Question 1 of 30
1. Question
The limiting frictional force between two surface depends on
I. the gaseous reaction between the surfaces
II. the nature of the surfaces in contact
III. the relative velocity between the surfaces
Correct
Incorrect
Hint
Friction depends on the nature of the surfaces in contact
-
Question 2 of 30
2. Question
If a body moves with a constant speed and at the same time undergoes an acceleration, its motion is said to be
Correct
Incorrect
Hint
Circular motion has uniform
-
Question 3 of 30
3. Question
When blue and green colours of light are mixed, the resultant colour is?
Correct
Incorrect
Hint
Cyan is a bluish-green colour
-
Question 4 of 30
4. Question
A metal rod has a length of 100cm at 200oCoC. At what temperature will its length be 99.4cm. If the linear expansivity of the material of the rod is 2 x 10−5C−1
Correct
Incorrect
Hint
L11 = 100cm, T11 = 200ooC
L22 = 99.4cm,T22 = ?
αα = 2 x 10−5−5C−1−1
αα = L2−L1L1(T2−T1)L2−L1L1(T2−T1)
2 x 10−5=100−99.4100(200−T2)=0.6100(200−T2)−5=100−99.4100(200−T2)=0.6100(200−T2)
2 x 10−5−5 x 100(200−T2)=0.6100(200−T2)=0.6
200−T2=0.60.002=300oC200−T2=0.60.002=300oC
T2=200−300=−100oC
-
Question 5 of 30
5. Question
According to kinetic molecular model, in gases
Correct
Incorrect
Hint
In kinetic molecular model, gases are energized and thus moves freely, fast as they occupy specific space
-
Question 6 of 30
6. Question
A train has an initial velocity of 44m/s and an acceleration of -4m/s22. Calculate its velocity after 10 seconds
Correct
Incorrect
Hint
V = u _ at, at u = 44m/s
44 + [-4]10
4m/s
-
Question 7 of 30
7. Question
Lamps in domestic lightings are usually in
Correct
Incorrect
Hint
Lamps in lightenings are arranged to reduce the heat losses
– resultant resistance is small for parallel arrangement which indicate low heat losses [Heat αα R]
-
Question 8 of 30
8. Question
During the transformation of matter from the solid to the liquid state, the heat supplied does not produce temperature increase because
Correct
Incorrect
Hint
During the transformation of the matter from the solid to the liquid state, the heat supplied does not produce a temperature increase because all the heat is used to break the bonds holding the molecules of the solid together
-
Question 9 of 30
9. Question
In a slide wire bridge, the balance is obtained at a point 25cm from one end of wire 1m long. The resistance to be tested is connected to that end and a standard resistance of 3.6Ω is connected to the other end of the wire. Determine the value of the unknown resistance
Correct
Incorrect
-
Question 10 of 30
10. Question
Electrons were discovered by
Correct
Incorrect
-
Question 11 of 30
11. Question
Which of the following is/are the limitations to the Rutherford’s atomic models?
I. It is applicable when energy is radiated as electrons are revolving
II. It is applicable when energy is radiated in a continuous mode
III. It is applicable to an atom with only one electron in the other shell
Correct
Incorrect
Hint
Rutherford assumed that (I) energy is radiated when electrons are revolving (II) energy is radiated in a continuous mode. These are limitations of Rutherford’s model
-
Question 12 of 30
12. Question
Which of the following equations is the correct definition of the reactance of an indicator L?
Correct
Incorrect
Reactance is the value of an indicator or a capacitor in ohms
-
Question 13 of 30
13. Question
Ripple in a power supply unit is caused by
Correct
Incorrect
Hint
The correct option is “Using a zener diode” as fluctuation of d.c signal results from the rectification of a.c to d.c.
-
Question 14 of 30
14. Question
When th temperature of a liquid is increased, its surface tension
Correct
Incorrect
Hint
Surface tension or elasticity of a fluid decreases with increased in temperature
-
Question 15 of 30
15. Question
The distance between an object and its real image in a convex lens is 40cm. If the magnification of the image is 3, calculate the focal length of the lens
Correct
Incorrect
Hint
u + v = 40
vuvu = 3
v = 3u
u + 3u = 40
4u = 40
u = 10cm
v = 3u = 30cm
f = uvu+v=10(30)10+30=30040uvu+v=10(30)10+30=30040
= 7.5 cm
-
Question 16 of 30
16. Question
A ray of light passes through the centre of curvature of a concave mirror and strikes the mirror. At what angle is the ray reflected?
Correct
Incorrect
Hint
– a ray of light passing through the centre of a curvature is returned along the same path
– angle difference along the same path is zero
-
Question 17 of 30
17. Question
The pin-hole camera produces a less sharply defined image when the
Correct
Incorrect
Hint
– a less sharp or blurred image is due to increased brightness
– increase brightness is also due to large hole or many pin holes
-
Question 18 of 30
18. Question
A straight wire 15cm long, carrying a current of 6.0A is in a uniform field of 0.40T. What is the force on the wire when it is at right angle to the field
Correct
Incorrect
-
Question 19 of 30
19. Question
The pitch of a screw jack is 0.45cm and the arm is 60cm long. If the efficiency of the Jack is 75/π %, calculate the mechanical advantage.
Correct
Incorrect
Hint
P = 0.45cm, L = 60cm, Eff = 75/π%
VR (Screw system) = 2πr
P
= 2πL
P
M.A = Eff% × VR
100
= 75
π
× 1
100
× 2π × 60
0.45
= 75 × 800
300
-
Question 20 of 30
20. Question
When the downward current flows in a straight vertical conductor, the direction of its magnetic field at a point due north of the wire is
Correct
Incorrect
-
Question 21 of 30
21. Question
Aluminium is sometimes used as the leaf of an electroscope because it
Correct
Incorrect
Hint
– Aluminium can be made in thin sheet like Gold.
– the leaf is a thin material that can be diverged easily. -
Question 22 of 30
22. Question
A supply of 400V is connected across capacitors of 3μf and 6μf in series. Calculate the charge
Correct
Incorrect
-
Question 23 of 30
23. Question
A vibrator causes water ripples to travel across the surface of a tank. The wave travels 50cm in 2s and the distance between successive crests is 5cm. Calculate the frequency of the vibrator
Correct
Incorrect
-
Question 24 of 30
24. Question
A thermocouple thermometer is connected to a millivoltmeter which can read up to 10mV. When one junction is in ice at 0°C and the other is steam at 100°C, the millivoltmeter reads 4mV. What is the maximum temperature which this arrangement can measure
Correct
Incorrect
-
Question 25 of 30
25. Question
A vibrator causes water ripples to travel across the surface of a tank. The wave travels 50cm in 2s and the distance between successive crests is 5cm. Calculate the frequency of the vibrator
Correct
Incorrect
-
Question 26 of 30
26. Question
A thermocouple thermometer is connected to a millivoltmeter which can read up to 10mV. When one junction is in ice at 0°C and the other is steam at 100°C, the millivoltmeter reads 4mV. What is the maximum temperature which this arrangement can measure
Correct
Incorrect
-
Question 27 of 30
27. Question
An alternating current can induce voltage because it has
Correct
Incorrect
Hint
As induced voltage is produced by varying magnetic field. The induced voltage is proportional to the rate of change of magnetic flux linking the coil.
-
Question 28 of 30
28. Question
The limiting frictional force between two surfaces depends on
I. the cohesive force of the material
II. the nature of the surfaces in contact
III. the relative velocity between the surfaces
Correct
Incorrect
Hint
Friction depends on the nature of the surfaces in contact
-
Question 29 of 30
29. Question
During the transformation of matter from the solid to the liquid state, the heat supplied does not produce a temperature increase because
Correct
Incorrect
-
Question 30 of 30
30. Question
The statement ‘Heat lost by the hot body equals that gained by the cold one’ is assumed when determining specific that heat capacity by the method of mixtures. Which of the following validates the assumption?
I. Lagging the Calorimeter
II. Ensuring that only S.I units are used
III. Weighing the calorimeter, the lid and the stirrer.Correct
Incorrect
MORE SUBJECTS TO BE UPLOADED SOON…KEEP INVITING UR FRIENDS & LOVE ONES
