N46,000
N45,000
N28,000
N27,000
Correct answer is C
Trading profit and Loss Account
|
opening stock 4,000 Gross profit 31,000 |
Sales 50,000 G.profit b/d 31000 |
To obtain pure carbon(ii)oxide from its mixture with carbon(iv)oxide, the mixture should be?
Passed over heated copper(ii)oxide
Bubbled through water
Bubbled through conc H\(_2\)SO\(_4\)
Bubbled through conc NAOH
Correct answer is D
carbon(ii)oxide is prepared from carbon(iv)oxide by passing the latter through red-hot carbon and the unchanged CO\(_2\) is removed when the mixture of the gases through conc NAOH.
The most important element on the earth's crust is?
Nitrogen
Hydrogen
Oxygen
Fluorine
Correct answer is C
Oxygen, O2, is by far the most abundant element in earth's crust at 46.6 percent, nearly half of the mass of the crust.
Aluminum hydroxide is used in the dyeing industry as a?
Dye
Dispersant
Salt
Mordant
Correct answer is D
Aluminum hydroxide is also used as a mordant in dyeing.
An electron can be added to a halogen atom to form a halide ion with?
8 valence electrons
7 valence electrons
2 valence electrons
3 valence electrons
Correct answer is A
A halide ion is a halogen atom bearing a negative charge (which is an anion with a charge of -1). The halide anions are fluoride (F−), chloride (Cl−), bromide (Br−), iodide (I−) and astatide (At−).