Chemistry

When alkynes are hydrogenated completely, they produce compounds with the general molecular formula?

A. CnH n B. C nH2n+2 C. CnH2n D. CnH2n-2 Correct Answer: Option D D. CnH2n-2

6 years ago

Which of the following compounds can be represented by the molecular formula C2H6O?

A. Propanal B. Ethanol C. Methanoic acid D. Glucose Correct Answer: Option B B. Ethanol

6 years ago

Which of the following processes takes place during the production of margarine from vegetable oils?

A. Esterification B. Hydrolysis C. Hydrogenation D. Saponification Correct Answer: Option C C. Hydrogenation

6 years ago

If two metallic ions of the same concentration migrate to a graphite cathode, the one that would be preferentially discharged is the one that has the

A. smaller mass B. lower electrical charge C. greater stability in solution D. stronger tendency to accept electrons Correct Answer:…

6 years ago

When concentrated sodium chloride solution is electrolysed using inert electrodes the products are?

A. oxygen and hydrogen B. hydrogen and oxygen C. sodium and oxygen D. soduim and chlorine Correct Answer: Option B…

6 years ago

Which of the following ions require the largest quantity of electricity for discharge at an electrode?

A. 2.0 mole of Q³+ B. 2.5 mole of R²+ C. 4.0 mole of Y‾ D. 3.0 mole of T‾…

6 years ago

The atomic number of chlorine is 17. What is the number of electrons in a chloride ion?

A. 16 B. 17 C. 18 D. 19 Correct Answer: Option C C. 18

6 years ago

If the relative molecular mass of an element is not a whole number, it can be deduced that the element is?

A. naturally radioactive B. abundant in nature C. a transition metal D. an isotopic mixture Correct Answer: Option D D.…

6 years ago

Which of the following processes will pollute water?

A. Exposure of a body of water ultraviolet rays B. Discharge of industrial effluents into waterways C. Passage of river…

6 years ago