Chemistry

Which of the following compounds is covalent?

A. CaCI2 B. MgO C. NaN D. CH4 Correct Answer: Option D D. CH4

6 years ago

One of the methods used for combating air pollution is?

A. burning of solid waste B. provision of sanitary land fills C. legislation against some industrial practices D. scavenging of…

6 years ago

Iron is often galvanized in order to?

A. make it more malleable B. remove the impurities in it C. protect it against corrosion D. render it passive…

6 years ago

The energy value of petrol can be determined by a?

A. bomb calorimeter B. catalytic cracker C. fractionating column D. thermometer Correct Answer: Option C C. fractionating column

6 years ago

A suitable reagent for distinguishing between ethanoic acid ethanol is?

A. bromine water B. Fehling's solution C. sodium hydrogentrioxocarbonate (IV) D. ammoniacal silver trioxonitrate (V) Correct Answer: Option C C.…

6 years ago

The reaction of sucrose with dilute HCI produces?

A. an alkanoate B. glucose and fructose C. a black mass of carbon D. a polysaccharide Correct Answer: Option B…

6 years ago

A visible change is observed when a strip of iron is placed in an aqueous solution of?

A. FeSO4 B. ZnSO4 C. CuSO4 D. MgSO4 Correct Answer: Option C C. CuSO4

6 years ago

Which of the following compounds will leave a metal residue when heated?

A. Cu(NO3)2 B. AgNO3 C. K2CO3 D. CaCO3 Correct Answer: Option B B. AgNO3

6 years ago

CuSO4.5H2O can be obtained from an aqueous solution of copper (ll) tetraoxosulphate (VI) by?

A. evaporation to dryness B. using chromatography C. precipitation D. crystallization Correct Answer: Option D D. crystallization

6 years ago