What mass of copper is deposited when 6.5g of granulated zinc reacts with excess copper(II) tetraoxosulphate(VI) solution?
The equation for the reaction is: Zn(s) + CuSO4(aq)→ZnSO4(aq)+Cu(s) [CU= 64; Zn=65] A. 3.2 g B. 3.25 g C. 6.4 g D. 6.5 g E. 64.0 g Correct Answer: Option C – 6.4 g
Which element is the most electronegative?
A. calcium B. fluorine C. iodine D. oxygen E. sodium Correct Answer: Option B – fluorine
What is the IUPAC name of CH3CCI=C(CH3)2?
A. 2-chloro -3 methylbut -2yne B. 2 -chloro -3 methylbut -2ene C. 2 -chloro -3 methylbutene D. 3- methyl -2-chlorobut -2-ene E. 3- methyl -2. chlorobut -2 yne Correct Answer: Option B – 2 -chloro -3 methylbutene
Which compound will give propane when it Is dehydrated by an excess of hot concentrated tetraoxosvlphate(VI) acid?
A. CH3CH2CHO B. CH3CH2CH2OH C. CH3CH2COOH D. CH3CH2OCH E. CH3CH3OH Correct Answer: Option B
A calcium atom and a calcium ion have the same?
A. chemical properties B. electric charge C. electronic structure D. number of electrons E. number of neutrons Correct Answer: Option E – number of neutronsProducts
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