poster "كيمياء السيارات"

ماهو المركب الرئيسي الذي يستخدم كوقود في محركات السيارات؟

• الغاز الطبيعي

• الجازولين

• الكيروسين

• الديزل

poster "Fruits by chemical eyes"

Q: what essential vitamins and minerals can be found in blueberries?

• Vitamin B12 and magnesium

• Vitamin E and calcium

• Vitamin A and iron

• Vitamin C , K and manganese

Poster "mesomorphic and optical studies of azo-Ester materials: effect lateral fluoro and terminal substituents"

Q: how can we determine the chemical structure of the synthesized compounds?

• both

• 1H and 13C NMR

• FT-IR

Poster "type of corrosion"

Q: how can we prevent the corrosion?

• Both

• passivation

• Electroplating

Poster "using nanocatalyst for synthesis and anti-microbial activity of thiazole derivative"

Q: how to prepare superparamagnetic iron oxide nanoparticles nanomagnetic catalysis?

• None of them

• Prepared by reducing the KMno4

• Prepared by reducing the Fe(II) and Fe(III)

Poster "surfactant (Detegents and cleaning)

Q:surface tensions can be ................... by the addition of surfactants

• None of them

• decreased

• increased

Poster "Plastic sensor for losartan potassium determination based on ferroin and ionic liquid"

Q: determination of losartan potassium in pharmaceutical formulation done by......?

• Potentiometric sensors

• PH sensors

• Temperature sensors

Poster "studies on bioactive compounds in some medicinal plants and its relation to health"

Q: which acid is present in flaxseed?

• linolenic acid

• formic acid

• acetic acid

Poster "Review NMR of octahedral Ru(III) complexes"

Q: Electromagnetic signal with a frequency characteristic of magnetic field at the nucleus produced by nucle?

• True

• False

poster "how colored compounds form"

Q: bromobismuth changes from yellow to a deep cherry red color after the.................?

• d-d transition

• Oxidation number

• Charge transfer