t.boy007:
When a solution containing a concentrated HCl is heated,the solution
a)remain costant
b)the concentration increases
c)the solution becomes dilute
d)the solution explode.

C- The solution becomes dilute
When concentrated hydrochloric acid is heated, it boils to liberate hydrogen chloride fumes, making the solution more dilute.
Hence the concentration of the acid decreases or diluted.

Prince adebayo: 1.Alkaline pyrogallol was used in an experiment.That experiment must have been connected with
A.excretion
B.germination
C.transpiration
D.digestion
E.photosynthesis
2.The one seeded fruit in which the pericarp and seed artery coat have become fused together is known as
A.achene
B.samara
C.caryopsis
D.legume
E.drupe
3.The conversion of excess amino acids into urea occurs in the
A.kidney
B.pancreas
C.villi
D.liver
E.spleen
4.The deficiency of vitamin D leads to
A.scurvy
B.pellagra
C.rickets
D.beriberi
E.polio
5.Nastic movement is
A.response to light stimulus
B.non-directional
C.directional
D.response to internal structure

1- E- photosynthesis
2- C- caryopsis
3- D- liver
4- C- ricket in children (osteomalacia in adult)
5- B- non-directional

Simplefemo:
B- The concentration increases i.e the higher the temperature, the higher the concentration

you're wrong sir

t.boy007:
you're wrong sir

When concentrated hydrochloric acid is heated, it boils to liberate hydrogen chloride fumes, making the solution more dilute.
Hence the concentration of the acid decreases or diluted.

Simplefemo:
1- E- photosynthesis
2- C- caryopsis
3- D- liver
4- C- ricket in children (osteomalacia in adult)
5- B- non-directional

5/5

A man stands one-third of the way between two walls and claps his hands.
He hears two distinct echoes 1second apart.
If the speed of sound is 330ms`1 the distance between the walls is A. 33m B. 110m C. 220m D. 330m E. 495m

Simplefemo: A man stands one-third of the way between two walls and claps his hands.
He hears two distinct echoes 1second apart.
If the speed of sound is 330ms`1 the distance between the walls is A. 33m B. 110m C. 220m D. 330m E. 495m

Lol,distance=speed x Time so answer =330m

Simplefemo: A man stands one-third of the way between two walls and claps his hands.
He hears two distinct echoes 1second apart.
If the speed of sound is 330ms`1 the distance between the walls is A. 33m B. 110m C. 220m D. 330m E. 495m

echo=2v/d
. : v=330/1=330m/s
2=2*330/d
d=660/2
. : d=330m
since the question says 1/3 of d,
d=1/3 * 330
d=110m
ansB)

Tizzie: Lol,distance=speed x Time so answer =330m

check 1980 question 45
subject- Physics
Exam type- UME (JAMB).

t.boy007:
echo=2v/d
. : v=330/1=330m/s
2=2*330/d
d=660/2
. : d=330m
since the question says 1/3 of d,
d=1/3 * 330
d=110m
ansB)

check 1980 question 45
subject- Physics
Exam type- UME (JAMB).

Simplefemo: Which of the following cannot be controlled by killing the vectors?
A. River blindness
B. Malaria
C. Polio
D. Cholera
E. Billhazia
2. All living organisms
A. Photosynthesis
B. Respire
C. Move
D. Feed
E. Transpire

question 1 has not been answered

An organism X lives entirely on the waste products in another organism Y. In this association X is a ?
A.symbiont
B. Commensal
C. Saprophyte
D. Parasite
E. Epiphyte.

1/3(t)-time 4 da 1st echoe,2/3(t) tym 4 da secnd ehoe,nd da diffrnce z 1secnd.which z 2/3(t)-1/3(t)=1,den t=3.solve for d in,v=2d/t.makin 445m

Simplefemo: A man stands one-third of the way between two walls and claps his hands.
He hears two distinct echoes 1second apart.
If the speed of sound is 330ms`1 the distance between the walls is A. 33m B. 110m C. 220m D. 330m E. 495m

Polio

Simplefemo:
question 1 has not been answered

B

Simplefemo: An organism X lives entirely on the waste products in another organism Y. In this association X is a ?
A.symbiont
B. Commensal
C. Saprophyte
D. Parasite
E. Epiphyte.

Apyday nd readn to all,itz bn a wyl.kudoz to u all 4 ur contributns nd simplet. U dae try joor i lov dat.

buzyguy: Itz bn a lng tym,watzup evry1.for sum tym nw av nt bn enabled to post.kudoz to odunnu!

even same here for almost a week nw

Take JAMB mock exam for all your science subjects log onto http://passjamb.com.ng

Practice on the go all your JAMB subjects use http://passjamb.com.ng for FREE

What is and intermediate product of ethen used in reducing freezing point. 2) which of the following hydrocarbons is the most reactive. a) butanol b)propane c) alkyne d) benzene. 3) what is the first stage of treatment of water for township supply.

edreesabiodun: What is and intermediate product of ethen used in reducing freezing point. 2) which of the following hydrocarbons is the most reactive. a) butanol b)propane c) alkyne d) benzene. 3) what is the first stage of treatment of water for township supply.

1- ethy hydrogentetraoxosulphate (vi), C2H5H2S04
2-benzene
3-coagulation.

1-ethyleneglycol(ethane1,2 diol) 2-butanol z nt an hydrocarbn,ansa z alkyne 3-coagulation

edreesabiodun: What is and intermediate product of ethen used in reducing freezing point. 2) which of the following hydrocarbons is the most reactive. a) butanol b)propane c) alkyne d) benzene. 3) what is the first stage of treatment of water for township supply.

Which of da following z likely to have the net electronegativity of approxim. 1.0 (a)co2 (b)HCL (c)Nacl (d)NH4cl

buzyguy: Which of da following z likely to have the net electronegativity of approxim. 1.0 (a)co2 (b)HCL (c)Nacl (d)NH4cl

NH4Cl

Simplefemo:
1- ethy hydrogentetraoxosulphate (vi), C2H5H2S04
2-benzene
3-coagulation.

1/3

buzyguy: 1-ethyleneglycol(ethane1,2 diol) 2-butanol z nt an hydrocarbn,ansa z alkyne 3-coagulation

3/3.

Co2-covalent wit zero net electronegativity,HCL-covalent wit appr. 1.0 dat is low net electronegatvity,Nacl-ionic wit high net electronegativity,NHCL-ionic,thou we stil av sum dative nd covalent bond there also hz a high net electronegativity.ansa z B

Nemidav:
NH4Cl

28g soil sample was heated to a constant weight of 24g. When further heated to red hot and cooled, it weighed 18g. What is the percentage of humus in the soil?
A. 22.2
B. 55.6
C. 75.0
D. 25.0
E. 35.7

2. Normally the flow of blood is never from
a. Artery to arterioles
b. Arterioles to capillaries
c. Capillaries to venules
d. Arterioles to the artery
e. Venules to the vein

buzyguy: 1-ethyleneglycol(ethane1,2 diol) 2-butanol z nt an hydrocarbn,ansa z alkyne 3-coagulation

But I think benzene should be the correct answer since the degree of unsaturation in a benzene is higher than that of the corresponding alkyne,
2- The number of sigma and pi- bonds in benzene is higher.
Make your answer more elaborate as regard the 2nd question.

Simplefemo: 28g soil sample was heated to a constant weight of 24g. When further heated to red hot and cooled, it weighed 18g. What is the percentage of humus in the soil?
A. 22.2
B. 55.6
C. 75.0
D. 25.0
E. 35.7

2. Normally the flow of blood is never from
a. Artery to arterioles
b. Arterioles to capillaries
c. Capillaries to venules
d. Arterioles to the artery
e. Venules to the vein

1. e 35.7
28-18/28 x 100
10/28 x 100
=35.7
2.d arterioles to the artery cos it is

veins<----venules------capillary(ies)<-----arterioles-----artery

Am back...Mayorella vespertillo, king of the amoeba kingdom that uses lobopoda for movement..Governor of phylum sarcodina....president of kingdom animalia...Hw are you guys doin

24-18=6,datz da humus given out in gram,6/24*100=25g.ansa D

Simplefemo: 28g soil sample was heated to a constant weight of 24g. When further heated to red hot and cooled, it weighed 18g. What is the percentage of humus in the soil?
A. 22.2
B. 55.6
C. 75.0
D. 25.0
E. 35.7

2. Normally the flow of blood is never from
a. Artery to arterioles
b. Arterioles to capillaries
c. Capillaries to venules
d. Arterioles to the artery
e. Venules to the vein