What will happen if an aluminium spoon is used to stir a solution of iron (II) trioxonitrates (V)?
A. The spoon will be oxidized while the iron (II) ions will be reduced to the metal
B. The spoon will increase in size
C. The spoon will be reduced while the iron (II) ions will be oxidized
D. The spoon will be reduced

A urine sample of a patient, tested with Benedict/Felling solution, gave an orange coloured precipitate,
indicating the presence of
A. glucose
B. sucrose
C. lactose
D. maltose

Optimist1998:
Which of the following statements is correct about sodium chloride in the solid state?
A. it exists as aggregates of ions
B. it conducts electricity
C. its melting point is below 100oC
D. it exists as discrete molecules
E. its ions are linked by metallic bonds

Which of the following reactions is not feasible?
A. Cl2 + 2Kl → 2KCI + I2
B. Cl2 + 2NaF → 2NaCI + F2
C. Zn + CuCI2 ZnCl2 + Cu
D. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag

The second should be B. No way on earth chlorine displace flourine
I need time for d first one

Optimist1998:
What will happen if an aluminium spoon is used to stir a solution of iron (II) trioxonitrates (V)?
A. The spoon will be oxidized while the iron (II) ions will be reduced to the metal
B. The spoon will increase in size
C. The spoon will be reduced while the iron (II) ions will be oxidized
D. The spoon will be reduced

A urine sample of a patient, tested with Benedict/Felling solution, gave an orange coloured precipitate,
indicating the presence of
A. glucose
B. sucrose
C. lactose
D. maltose

.
I think I have answered d first one be4 it is A.
I am not sure of d second one at all but it should be A... Reducing sugar? Aldose or ketose? Pls reply with ans.
Guy and I think u shld start posting exclusively from d series from naw on

Optimist1998:
Which of the following statements is correct about sodium chloride in the solid state?
A. it exists as aggregates of ions
B. it conducts electricity
C. its melting point is below 100oC
D. it exists as discrete molecules
E. its ions are linked by metallic bonds

Which of the following reactions is not feasible?
A. Cl2 + 2Kl → 2KCI + I2
B. Cl2 + 2NaF → 2NaCI + F2
C. Zn + CuCI2 ZnCl2 + Cu
D. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag

.Regarding d first one, it should not be A I tink B is out it, I don't tink it shld be C or E. So am going with D

Optimist1998:
What will happen if an aluminium spoon is used to stir a solution of iron (II) trioxonitrates (V)?
A. The spoon will be oxidized while the iron (II) ions will be reduced to the metal
B. The spoon will increase in size
C. The spoon will be reduced while the iron (II) ions will be oxidized
D. The spoon will be reduced

A urine sample of a patient, tested with Benedict/Felling solution, gave an orange coloured precipitate,
indicating the presence of
A. glucose
B. sucrose
C. lactose
D. maltose

A and B
Hello guys!

Optimist1998:
Which of the following statements is correct about sodium chloride in the solid state?
A. it exists as aggregates of ions
B. it conducts electricity
C. its melting point is below 100oC
D. it exists as discrete molecules
E. its ions are linked by metallic bonds

Which of the following reactions is not feasible?
A. Cl2 + 2Kl → 2KCI + I2
B. Cl2 + 2NaF → 2NaCI + F2
C. Zn + CuCI2 ZnCl2 + Cu
D. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag

The first one should be D, in solid state they dearth mobile ions to conduct electricity, second is B

Optimist1998:
Which of the following statements is correct about sodium chloride in the solid state?
A. it exists as aggregates of ions
B. it conducts electricity
C. its melting point is below 100oC
D. it exists as discrete molecules
E. its ions are linked by metallic bonds

Which of the following reactions is not feasible?
A. Cl2 + 2Kl → 2KCI + I2
B. Cl2 + 2NaF → 2NaCI + F2
C. Zn + CuCI2 ZnCl2 + Cu
D. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag

since the Nacl is in solid state, E should be the answer cos solids have three dimensional shapes controlled by the type of force holding their crystal lattice structure together hence Nacl is held by metallic bond such dat each Na is surrounded by Cl ions nd each Cl is surrounded by Na ions nd since inter ionic bond is strong Nacl has high boiling point. It should have been (D) if the Nacl was in liquid state

Optimist1998:
Which of the following statements is correct about sodium chloride in the solid state?
A. it exists as aggregates of ions
B. it conducts electricity
C. its melting point is below 100oC
D. it exists as discrete molecules
E. its ions are linked by metallic bonds

Which of the following reactions is not feasible?
A. Cl2 + 2Kl → 2KCI + I2
B. Cl2 + 2NaF → 2NaCI + F2
C. Zn + CuCI2 ZnCl2 + Cu
D. Zn + 2AgNO3 → Zn(NO3)2 + 2Ag

1.A 2.B
A z correct cz NaCl z an ionic compound,,so it exists as aggregate of ions in solid state
It cnt b D cz its mostly covalent compounds dat exist as discrete molecules and cnt b C cz it has an high meltn pt due to d strong electrostatic force
E z entirely out

Genius101:
since the Nacl is in solid state, E should be the answer cos solids have three dimensional shapes controlled by the type of force holding their crystal lattice structure together hence Nacl is held by metallic bond such dat each Na is surrounded by Cl ions nd each Cl is surrounded by Na ions nd since inter ionic bond is strong Nacl has high boiling point. It should have been (D) if the Nacl was in liquid state

Nacl z nt held by metallic bond...its d atoms of Na itself that r held by dat bond and nt NaCl

Adebunmiemmy:

1.A 2.B
A z correct cz NaCl z an ionic compound,,so it exists as aggregate of ions in solid state
It cnt b D cz its mostly covalent compounds dat exist as discrete molecules and cnt b C cz it has an high meltn pt due to d strong electrostatic force
E z entirely out

.
Take a bow... U are right about d first one

It only contains molecules in solid state.

Since molecules make up matter (solid, liquid or gases) D is most appropriate I think.

please
my brother wants to write this year jamb and he chooses to study animal production and health or any other agric related course...
how do you guys think he can choose subjects to partake in in jamb
because he wants to pick
agric,chemistry,physics, and English
with a NECO result in which he has D7 in agric and credit in all other compulsory subjects

Adebunmiemmy:

Nacl z nt held by metallic bond...its d atoms of Na itself that r held by dat bond and nt NaCl

yeah ur right Nacl is an iconic solid having ion at their lattice point...

If I Did Not Write Waec But Neco Instead, Can I Register For Jamb As Awaiting Result Candidate? i.e. Will Neco Result Be Out Before School Screening?

felix00:
.
I think I have answered d first one be4 it is A.
I am not sure of d second one at all but it should be A... Reducing sugar? Aldose or ketose? Pls reply with ans.
Guy and I think u shld start posting exclusively from d series from naw on

I think it's A too

Nuel25846:

A and B
Hello guys!

Where have you been?

The Nucleic acid that has Nitrogenous bases , Hydrogen bond and Ribose sugar but no Phosphoric acid is a what??

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Nuel25846:

why don't u open shop and do chemist like every other person??

so u think thats what pharmacy is all about Your comment really made me furious.
Check google about achievements of pharmacists and i bet u, it will leave u agog. You're implying pharmacy is not something worth learning whereas, its even a professional course. Pls avoid controversies

Good day guys, i really need your help on this one under mirror. The question goes thus

What is the radius of curvature of a concave mirror that magnifies an object placed 30.0 cm from the mirror by a factor of +3.0?

Optimist1998:
I think it's A too

. U are not even sure... No be u post question?

Optimist1998:
Where have you been?

.
Ans dis bro am lost.
Calcium tetraoxosulphate(VI) dissolves in water sparingly to form A solution B suspension C precipitate D colloid. Pls explain

kristian98:

so u think thats what pharmacy is all about Your comment really made me furious.
Check google about achievements of pharmacists and i bet u, it will leave u agog. You're implying pharmacy is not something worth learning whereas, its even a professional course. Pls avoid controversies

Kristian is taking it personal

felix00:

Kristian is taking it personal

not my fault. His comment irritated me. Its even pharmacists that produce drugs that doctors use sef

kristian98:

not my fault. His comment irritated me. Its even pharmacists that produce drugs that doctors use sef

Pharmacist in Nigeria kind of dispense drug only. At least that's what I know from d people I ask.
So phamacist are educated version of chemist I think

felix00:

Pharmacist in Nigeria kind of dispense drug only. At least that's what I know from d people I ask.
So phamacist are educated version of chemist I think

Tell the dude that after studying Pharmacy for six years in the university he will come back to open a small kiosk to sell drugs and will be called 'oga chemist' or if that one no too bad he will carry native medicine(agboo) on his head like those yoruba ladies.....is it not in this Nigeria??

Optimist1998:
Where have you been?

I got really sad I was failing most of the questions....so I had to go back to my text books......solving under tension.

Nuel25846:

I got really sad I was failing most of the questions....so I had to go back to my text books......solving under tension.

u don't need to solve under tension.
just cool your brain and jack d fucking hell out of the textbook.

felix00:

Pharmacist in Nigeria kind of dispense drug only. At least that's what I know from d people I ask.
So phamacist are educated version of chemist I think

wao!!! To think someone who wants to study pharmacy will say this baffles me. What happened to your dreams and aspirations Or you have none Are u really going to study pharmacy in uni based on your passion or u just need a certificate. Well, i guess u have set a path for yourself already. You have limited yourself to think pharmacists are chemist so i wish u a happy life dispensing drugs