JAMB CBT ANSWERS FOR (DAY3) MONDAY 12TH MARCH 2018(7am,10am,1pm and 3pm)

JAMB 2018 CBT QUESTIONS/ANSWERS FOR DAY2 MARCH 10/03/2018(6am,10am,1pm and 3pm)

Answers will be posted shortly Keep on Refreshing…..

NOTE:- Our Answers Will Come In “WORDS” which means we are not sending you “ABC” we will send it in words;
Example is:
1) kingdom
2) The hall
3) At the center
4) physics teacher
5) Jimmy

So with this pattern you can locate your answers on our computer even if jamb decides to disarrange the answers.

Answers will be posted shortly Keep on Refreshing…

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7am Answers

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CALL 08069041389

PHYSICS 7AM
1 :- in the production of a pure spectrum of white light, the purpose of the collimator is to
CORRECT ANSWER =
produce a parallel beam
2 :- at what temperature will the contigrade scale triple the fahrenteit scale?
CORRECT ANSWER =
– 7.27 0F
3 :- a device that is commonly used as a switch in electronics is
CORRECT ANSWER =
transistor
4 :- a liquid with its angle of contacy being acute angle has greater
CORRECT ANSWER =
cohesive force
5 :- the type of motion desiplayed by a simple pendulum is
CORRECT ANSWER =
oscillatory
6 :- which of the liquid above are volatile?
CORRECT ANSWER =
I, II ,III and IV
7 :- dissolved impurities in water will
CORRECT ANSWER =
increase it boiling point
8 :- calculate the magnitude of the forces on a 0.0m wire carrying 20A current in 0.6T magnetic field at 90 0 to the straight wire
CORRECT ANSWER =
0.6N
9 :- the saturated vapour pressure of liquid depends only on
CORRECT ANSWER =
temperature
10 :- if the mass of metal is 0.012kg and its temperature is raised from 15 0C to 20 0C by 50J of heat, calculate its specific heat capacity
CORRECT ANSWER =
833.3 J kg -1 K-1
11 :- a stone hauled into water from a ship sinks while the ship remains afloadt due to
CORRECT ANSWER =
buoyancy
12 :- from the diagram above , what is the velocity ratio of the sytem of pulleys?
CORRECT ANSWER =
4
13 :- the above nuclear reaction is
CORRECT ANSWER =
Nuclear fission
14 :- thye moment of a force about a point is given as
CORRECT ANSWER =
the product of the force
15 :- from the diagram above, what is the effective resistance?
CORRECT ANSWER =
(R1 R2/R1+R2 + R3)
16 :- Alkaline accumulators may be preferred over lead – acid ones because
CORRECT ANSWER =
they have longer life
17 :- a glass block of thickness 4.5cm is placed on a black dot on a pieces of paper. Calculate the displacement of the dot when it is viewed vertically downwards.
CORRECT ANSWER =
1.5cm
18 :- waves used by ships in echo sounding have
CORRECT ANSWER =
very high frequency
19 :- the visocity of a liquid is
CORRECT ANSWER =
directly proportional
20 :- when there is an increase in pressure at any point in a confined fluid, there is an increased at every other point in the container. What principle is this based on?
CORRECT ANSWER =
pascal
21 :- to produce final images that are not inverted, the Galilean telescope is constructed using
CORRECT ANSWER =
two converging lens
22 :- convex mirrors are used as rear view mirrors in the vehicles because they produce images that are
CORRECT ANSWER =
erect and dimished
23 :- calculate the workdone per minute in lifting 1000kg of water through a height of 3m in 5minutes.
CORRECT ANSWER =
100W
24 :- which of the above are the industrial applications of electrolysis?
CORRECT ANSWER =
I and III
25 :- the unit for domestic electric power consumption is
CORRECT ANSWER =
Kwh
26 :- from the diagram above, calculate the strain on the string (g = 10ms-2; elastic constant = 500Nm -1)
CORRECT ANSWER =
0.08
27 :- the wavelenght of a component of the electromagnetic spectrum is 4.8 x 10-6m. Find its frequency ( c = 3.0 x 10 8ms-1)
CORRECT ANSWER =
6.25 x 1013 Hz
28 :- the pressure of fixed mass of a gas is inversely proportioanl to its volume, provide that the temperature is kept constant. This law is known as
CORRECT ANSWER =
Boyle’s Law
29 :- which of the instrument above gives the most accurate measurement?
CORRECT ANSWER =
II
30 :- the dialectric in a capacitor is usually
CORRECT ANSWER =
an insulator
31 :- if a container containing a certain liquid was heated and there was expansion of both liquid and the container, the liquid expriences
CORRECT ANSWER =
apparent expansivity
32 :- the wave given in the diagram above is
CORRECT ANSWER =
destructive interference
33 :- lighting conductions fixed in buildings conduct charges from the
CORRECT ANSWER =
building into the ground
34 :- calculate the current in a 0.12H coil connected to 110V, 20Hz source
CORRECT ANSWER =
7.290A
34 :- calculate the current in a 0.12H coil connected to 110V, 20Hz source
CORRECT ANSWER =
7.290A
36 :- a transformer which provide higher e.m.f at secondary coil than at the primary coil is called
CORRECT ANSWER =
step – up transformation
37 :- all objects dropped from the same height, in the same medium, irrespective of their masses have the same
CORRECT ANSWER =
acceleration due to gravity
38 :- the following statements are corretc about magnets and magnetic field EXCEPT
CORRECT ANSWER =
compass needle
39 :- a pipe of length 1.20m open at both ends resonance with a second overtone when a tuirning fork of frequency 442Hz is sounded at its end. Calculate the speed of sound in air
CORRECT ANSWER =
354m/s
40 :- energy level of the atom was proposed by
CORRECT ANSWER =
Bohr

WISH YOU GOODLUCK!

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