If a metal R forms a compound with the formula R(NO3)2 the formula of its…
If a metal R forms a compound with the formula R(NO3)2 the formula of its tetraoxosulphate (VI) is…
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Which of the following decreases when a given mass of gas is compressed to half…
Which of the following decreases when a given mass of gas is compressed to half its initial volume?…
The atomic number of chlorine is 17. What is the number of electrons in a…
The atomic number of chlorine is 17. What is the number of electrons in a chloride ion? A.…
Waste plastics accumulate in the soil and pollute the environment because plastic materials are
Waste plastics accumulate in the soil and pollute the environment because plastic materials are A. insoluble in water…
If the relative molecular mass of an element is not a whole number, it can…
If the relative molecular mass of an element is not a whole number, it can be deduced that…
Acidic industrial waste can be treated with
Acidic industrial waste can be treated with A. lime B. brine C. water D. enthanol Correct Answer: Option…
Which of the following reactions represents the change that occurs when a photographic film is…
Which of the following reactions represents the change that occurs when a photographic film is exposed to sunlight?…
If 10 cm 3 of distilled water is added to 10 cm3 of an aqueous…
If 10 cm 3 of distilled water is added to 10 cm3 of an aqueous salt solution, the…
One of the products of combustion of pentane in excess air is
One of the products of combustion of pentane in excess air is A. pentanol B. pentene C. nitrogen…
Which of the following polymers contains nitrogen?
Which of the following polymers contains nitrogen? A. Nylon B. Polyvinyl chloride C. Polyethene D. Cellulose Correct Answer:…