₦airaland Forum

Morin to all!

Sum1 tak ds:what z da kinetic energy of a ston of mass 4kg dropped frm an height of 15m,reachd one-third of the total height wit a velocity of 20m/s? A.400j b.800j c.200j d.1000j

Gr8 ife...here we go! D wk of gr8 commitmnt nd sacrific.we shall mak it big ijn

Apy sundae,itz a nw wk 2day...datz da wk of roundn off.i pray miracle apens ds wk ijn

B,chck under metallic sulphidez

t.boy007:
D

What part does exchang of water occur in castor-oil seed? A.testa b.caruncle c.seed pores d.micropyle

Chem:Wich of da follwn cld shw a orange-yellow colour in a sample of paint. A.cds b.as2s3 C.sb2s3 d.mns

Wot i gav z diffrnt frm (g n r) n b wich z white

Simplefemo: D- White

Oh i undstnd u,mayb itz nt wel xplanatory.n-intersect,b'-compliment of colour b so use the idea of venn diagram xcludn da universal compliment.i bliev it wld be done lyk dat

quivah: sowi ooo buzyboy! Bt red n blue givs magenta nt g n r .. D ans is cyan!

K then.

t.boy007:
my brother,it's actually 3, which are lead (1V) tetraethyl,1,2-dibromoethane and 1,2-dichloroethane......

Magenta

t.boy007:
CYAN

Sum1 Grab ds,when 3colours overlap on one anoda to form 7distinct colours such dat b-blue,g-green nd r-red.what colour z believd to be seen at da segment,(g n r) n b' is,a.cyan b.yellow c.magenta d.white.

Ahan,dnt tel me chloroethane z a petrol additiv,we av two wich r lead(iv)tetraethyl nd 1,2dibromoethane,datz y fuel exhaustz containz bromine nt chlorin.

t.boy007:
Correction:
Chem:
1.c
2.c
3.d
4.a
5.9 isomers not 7
6.c
phy:
1.c
2.a
3.b

Hi to evry1,am jst bak by olawalez help.thks to him!NEVA relent on readn,da tym z already 'COME',apy readn!

Oh,really made two mistakz 1 in chm n 1 in phy...cuz i wz lyk dozy then.besyds hw z heptane 7sevn isomeric?

t.boy007:
Correction:
Chem:
1.c
2.c
3.d
4.a
5.9 isomers not 7
6.c
phy:
1.c
2.a
3.b

Wich of da follown z used to test btwn the amines?a.N2 B.HNO3 C.HNO2 D.(NH3)2CO3

4chem' 1-c 2-d 3-d 4-a 5-none,itz 9 isomers 6-d physcz,1-b 2-a 3-a

t.boy007:
ok grab this:
chemistry:
which of the following is the increasing sensitivity to light?
a)AgI >AgCL>AgBr
b)AgBr >AgCL>AgI
c)AgCl >AgBr>AgI
d)AgBr >Agi>Agcl
2)the compressibility factor for a real gas is?
a)equal to 1
b)zero
c)not equal to 1
d)constant
3)at what ph scale will magnesium metal librate gas
a)>1
b)<1
c)>7
d)<7
4)what is the hybridyzation for diamond
a)sp3
b)sp3d2
c)sp2
d)sp3d
5)how many isomer has an heptane
a)5
b)8
c)7
d)6
6)which of the following is an antiknock
a)ethyne
b)2-methyl pentane
c)1,2-dichloroethane
d)none of the above

physics:
1)the major difference between x-ray spectrum and optical spectrum is?
a)they differ with intensity
b)they differ with colours
c)they differ with different metal
d)they differ with number of electron
2)in the conversion of galvanometer to ammeter,
a)a wire of low resistance in parallel
b)high resistance in series
c)multiplier in parallel
d)multiplier in series
3)the conductivity of a semiconductor increases with
a)decrease temperature
b)increased temp
c)increased pressure
d)constant
GOOD LUCK

D

t.boy007:
Which of the following DOES NOT undergoes additional reaction?
a) C2H4
b)CH3-CH triple bond CH-CH3
c)benzene
d)non of the above

Datz 4modern.

Simplefemo: C-cerebrum is the right answer
check modern Biology page 407.

Hmm,pepipalp in spider z neva used for grasping.it funtnz as da antennae of da insectz so far antennae z absent in spider

klem93: 4/5 1. A

B

Simplefemo: C- cerebrum

Correct

Simplefemo: B- divergent evolution

B

Simplefemo: C

The radiation shown by sum bird beakz z an example of wot evolutn. A.convergent b.divergent c.continuous d.co-evolution

The part of da brain whre nerves croz in wich the right hemisphere controls the left side of da body nd left hemi. controls da right side of da body is,a.cerebellum b.medulla oblongata c.cerebrum d.pons varolli

The fruit with itz epicarp fused with mesocarp z,a.achene b.pepo c.caryopsis d.samara

1-c,2-c,3-c,4-c,5-c

klem93: 1.the pedipalpi in spiders are used for a. Grasping b. Walking c. Feeling d. Web spinning. 2. In a dicotyledonous stem, each companion cell is found besidd the a. Endodermal cell b. Xylem vessel c. Sieve tube d. Pericyclic fibre 3. Which of d ffg moults a. Rat b. Snail c. Snake d. Earthworm. 4. D region that controls most of the unconscious proceses of a mamalian body is the a. Cerebellum b. Cerebrum c. Spinal cord d. Medulla oblongata. 5. When d 2 alleles present in an organism d same type, d genotype is a. Heterozygous b. Heterogamous c. Homozygous d. Homologous.

Let questnz troop in plsss!

Jesus!If jmb sets ds questn i wld prefer to tear my ansa buklet.

emmyeuler1: Calculate the crystal field stabilization energy for a d^8 ion such as Ni2+ in octahedral complexes

I dnt tnk sickle cell z sex-linked

emmyeuler1: THIS THREAD IS MEANT 4 JAMB CHEMISTRY AND PHYSICS NOT BIOLOGY....THOUGH THE ANSWER IS A AND C....SICKLE CELL AND COLOUR BLINDNESS ARE SEX LINKED

Emmer@,ur questnz r 2tough 4me oo. I dnt tnk i cn tackle them as xpectd unlez i consult sum oda txts,bt da tym z already gone 4dat cuz da xam z already brngn out itz aroma showing itz nearer dan b4.mayb afta jamb then we button on our search lightz nd brng diverse questnz,i pray nd prophesize dat evry1 of us here would emerge vry far abov 300,evn one of the top scorerz in jesus' name