NEW
Font size
Worksheetstransition elements(1)
Total questions: 10
Worksheet time: 12mins
Four elements A, B, C and D: the element (A) used as a catalyst in the preparation of Ammonia gas in industry , one of the compounds of element (B) used as oxidizing agent in the dry cell, the element (C) used in manufacture of heating coils and element (D) is the first discovered metal . Based on the previous information, the correct arrange of these four element will be:
Fe - Ni - Cu - Mn
Mn - V - Fe - Zn
V - Zn - Mn - Fe
Fe - Mn - Ni - Cu
Chromium is a transition element, it used to
protect metals from chemical reaction with acids
increases hardness and elasticity of metals
protect metals from chemical reaction with oxygen and water
protect metals from chemical reaction with strong alkalis
The following transition metal oxides are used for colouring different materials, which one of them could be used to color the t-shirts of my favored team
Cr2O3
V2O5
MnO2
Fe2O3
concord airplane is the fastest civil airplane, which metal you expect to be used in the manufacture of its nose and wings
iron
manganese
vanadium
titanium
in the extraction of aluminium from its ore(Al2O3), the ores should be melted at the first at (1750oC), then the extraction process is conducted by passing electric current in the molten ores. which of the following alloys could be used in the manufacture of the container used to hold that molten substances
iron- vanadium
chromium - vanadium
titanium - chromium
secondium - cobalt
n order to protect the expansive engine in modern cars, the engine is carried over a metal rod. That metal rod should be easily broken in case of the front hit, so the engine falls down in a special shield for its protection. The metal rode is made of
Iron
manganese
titanium
nickel
the addition of fehling solution to that juice then boiling
the blue colour remain unchanged
the blue colour changed into red
the blue colour changed into green
that metal bowl is used in cleaning purposes in poor countries, which of the following methods you expect to be used in its manufacturing process
iron coated with chromium
galvanization of iron
iron coated with titanium
الحريق في خط خام (شقير - مسطرد) فى طريق القاهرة - الاسماعيلية الصحراوى. تم السيطره على النيران بواسطة سيارات إطفاء
الحريق ، والحماية المدنية ، وتم تشكيل لجنة للتحقيق في الحدث
after the disaster, the workers investigate the performance and safety of the other underground pipes using.........
vanadium pentaoxide change in colour
copper sulphate solution
cobalt 60 isotpe
potassium permenganate solution
the cathode ray experement is concedered as the firest step in side the atom and the discovarey of the electrons. if both anode and cathode are made of secondium, and the added gas is mercury vapour ...............is observed.
red light
green light
normal light with increased intensity
