Chemistry Pinoy Reviewer

14/09/2026

Which of the following solutions will have the lowest pH value?
a. NaCl ( aq)
b. NaF (aq)
c. NaHPO4 (aq)
d.NaHCO3 (aq)

13/09/2026

In a system in which the granular solid serves, as a mechanical support for a liquid stationary phase and another liquid is the mobile phase, the resulting set-up is appropriately referred to as;
a. Adsorption chromatography
b. Partition chromatography
c. Thin layer chromatography
d. Liquid-solid chromatography
e. None of these

05/09/2026

What is the maximum weight of SO3 that could be made from 40.0 g of SO2 and 8.0 gram of O2 by the reaction below?

2SO2 + O2 >> 2SO3

a. 40.0 g
b. 25.0 g
c. 20.0 g
d. 31.3 g

28/08/2026

16/08/2026

The analytical techniques which relates the degree of turbidity to the quantity of substance present in a sample is known as ;
a) Activation analysis
b) Nephelometry
c) Spectrophotometry
d) Magnetic resonance spectroscopy

12/08/2026

Which of the following is NOT true about steric hindrance?
a) It is related to the presence of large groups around a molecule.
b) It can influence the shape and reactivity of molecules.
c) Steric hindrance only occurs in organic compounds.
d) Steric hindrance can prevent certain chemical reactions

06/08/2026

Chem Tech Review Question

In using fume foods, the following shall be done, except for;
a) Ensure the exhaust is operating before using the hood.
b) The hood shall be keep closed, except during apparatus set-up or working within the hood
c) The hood may be used as a permanent storage area for volatile chemicals when an appropriate storage cabinet is not available.
d) Items contaminated with odor's or hazardous materials should be removed from the hood only after decontamination or if placed in a closed outer container to avoid releasing contaminants into the laboratory air.

03/08/2026

Physical Chemistry

Which of the following substance has the largest dipole moment?
a. CH4
b. CH3Cl
c. CH2Cl2
d. CHCl3
e. CCl4