9. How many grams are in 0.90 mol Pd?
A. 95.88
B. 106.48
C. 0.900 g
D.1.80 g
10. What is the number of moles in 0.025 g (NH4)2Cr207?
A. 1.5 x 1022
B. 4.2 x 10-26
C. 6.3
D. 1.0 x 10-4
11. Which of the following statements is not correct about carbon atom?
A. Carbon atom is unique in its ability to combine with other carbon.
B. Carbon atoms form stable carbon compounds.
C. Carbon atoms form single, double, or triple bonds with other carbon atoms.
D. Carbon atoms combine only with nonmetals like P, S, N, O and CI.
12. Which statement best describes hydrocarbons?
A. Hydrocarbons are soluble in water,
B. Hydrocarbons are only made of hydrogen and carbon.
C. Hydrocarbons form the framework of all compounds.
D. Hydrocarbons occur naturally in fossil fuels.
13. Which of the following hydrocarbons fits the formula, CnH2n-2.
A. hexane B. hexane C. hexyne D. hexanol
14. Which of the following compound does not have the carbonyl group?
A. alkene B. aldehyde C. carboxylic acid D. ketone
15. Which of the following is not an example of hydrocarbon?
A. C2H2
B. C2H C. C2H6 D. C2H5OH
16. Since the lockdown last March, Jose has been using a bicycle as his means of
transportation to his workplace 20 kilometers away from his boarding house.
One afternoon while returning home from work, the wheei of his bicycie could
hardly turn because the friction in its ball bearing is great. Which hydrocarbon
should he buy and use to lessen friction?
A. gasoline B. isopropyl alcohol C. kerosene D. lubricating oil
17. Which of the following alcohols is produced from the fermentation of sugar
or starch?
A. methyl alcohol
C. Isopropyl alcohol
B. ethyl alcohol
D. butanol
18. What is not a correct description of acetone?
A. It contains a carbonyl group in its molecule.
B. It is a ketone.
C. It is used to preserve tissues of specimens.
D. It is used to remove paints, varnish and nail polish.​