A mixture of petrol and water can be separated through
A mixture of petrol and water can be separated through A. centrifugation B. distillation C. the use of…
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Which of the following represents an aromatic compound?
Which of the following represents an aromatic compound? A. C6H5OH B. C6H12 C. C6H9OH D. C6H8 Correct Answer:…
CH3CH2Cl + KCN → CH3CH2CN + KCl In the reaction above, the cyanide is
CH3CH2Cl + KCN → CH3CH2CN + KCl In the reaction above, the cyanide is A. hydrophobic B. hydrophilic…
A metal X forms two bromides with the formulae XBr2 and XBr3. What type of…
A metal X forms two bromides with the formulae XBr2 and XBr3. What type of bonding exists between…
the elements that belong to the third period of the periodic table are
the elements that belong to the third period of the periodic table are A. Li, Be, Al and…
Which of the following decrease when a given mass of gas is compressed to half…
Which of the following decrease when a given mass of gas is compressed to half its initial volume?…
If the electron configuration of a element is p1s2 2s2 2P5, how many unpaired electron…
If the electron configuration of a element is p1s2 2s2 2P5, how many unpaired electron are there? A.…
How many electrons are in the L shell of 3115P?
How many electrons are in the L shell of 3115P? A. 5 B. 8 C. 18 D. 2…
What is the volume of oxygen required to burn complete 45 cm3 of methane at…
What is the volume of oxygen required to burn complete 45 cm3 of methane at s.t.p? A. 135.0…
Which experiment led to the measurement of the charge on an electron?
Which experiment led to the measurement of the charge on an electron? A. Mass spectrometric experiment B. Oil-drop…