Chemistry 103 Quiz: Trivia Questions!

15 Questions | By Pharmacgy | Last updated: Apr 6, 2021 | Total Attempts: 175

Questions

Settings

Why should we care about chemistry? If you’re asking yourself this question, you do not realize how important chemistry is to our daily lives. Chemistry is imperative for our basic needs, such as food, clothing, shelter, health, energy, clean water, and soil. Chemicals also help us to find new cures for deadly diseases or treatments for illnesses. Science is the reason why we now have a COVID vaccine. This quiz will show you how valuable chemistry is.

Questions and Answers

1.

Write the formula between ionic compounds K and S?
- A.
  
  KS2
- B.
  
  K3S2
- C.
  
  K2S
- D.
  
  K2S3
2.

What is the molar mass Ba(OH)2 .8H2O?
- A.
  
  281.4 g/mol
- B.
  
  298.4 g/mol
- C.
  
  299.5 g/mol
- D.
  
  315.5 g/mol
3.

Convert 5 km/h to m/sec?
- A.
  
  1.5 m/sec
- B.
  
  1.37 m/sec
- C.
  
  1.39 m/sec
- D.
  
  2 m/sec
4.

When 5g of H2 and 5g of O2 were reacted, the yield of H2O was 87.9%. What is the actual yield of H2O? 2H2 + O2 ——> 2H2O
- A.
  
  6.4 g
- B.
  
  4.9 g
- C.
  
  5.1 g
- D.
  
  12.8 g
5.

Calculate the mass in gram of cube if density = 19.32 g/cm3 and the length of the cube is 2 cm.
- A.
  
  154.56 g
- B.
  
  155 g
- C.
  
  154.1 g
- D.
  
  156 g
6.

Which one of the following is a correct expression for molarity?
- A.
  
  Mol solute / L solvent
- B.
  
  Mol solute / ml solvent
- C.
  
  Mmol solute / ml solution
- D.
  
  Mmol solute / L solution
7.

The group 6A called?
- A.
  
  Halogens
- B.
  
  Noble gases
- C.
  
  Alkali metal
- D.
  
  Chalcogens
8.

50.0 ml of water were added to 150 ml of 5.0 M H2SO4 solution, calculate the concentration of the solution.
- A.
  
  3.3 M
- B.
  
  3.5 M
- C.
  
  4.00 M
- D.
  
  3.75 M
9.

Round 0.00758 to two significant figures.
- A.
  
  0.0080
- B.
  
  0.00750
- C.
  
  0.0076
- D.
  
  0.0075
10.

How many Oxygen atoms are in 0.88 mol of C6H12O6? ( N.A = 6.02 *10^23 )
- A.
  
  31*10^23
- B.
  
  31.8*10^23
- C.
  
  32*10^24
- D.
  
  5.3*10^23
11.

What is the concentration M of Na+ in a solution by dissolving 23.4 g of Na2CO3 in 125.0 ml of solution? M.w(Na2CO3) = 106 g/mol
- A.
  
  3.4 M
- B.
  
  3.53 M
- C.
  
  3.00 M
- D.
  
  4.1 M
12.

The charge of element Ra?
- A.
  
  +1
- B.
  
  -1
- C.
  
  +2
- D.
  
  Non of the above
13.

6.5 grams of Al reacts with excess of Oxygen. How many grams of Al2O3 is formed ? ( M.W Al = 27 g/mol . M.W Al2O3 = 102 g/mol ) 4Al + 3O2 ——> 2Al2O3
- A.
  
  11.2 g
- B.
  
  12.1 g
- C.
  
  12.24 g
- D.
  
  13.35 g
14.

Calculate the molarity of NaOH solution if 10.42 ml of this solution are needed to neutralize 25.00 ml of 0.2043 M oxalic acid ( H2C2O4) ?
- A.
  
  1.500 M
- B.
  
  0.9803 M
- C.
  
  0.4902 M
- D.
  
  0.2500 M
15.

Carry out the following operation ( 4.02+5.612 ) ( 15.2-15.15 ) =
- A.
  
  0.48
- B.
  
  0.4
- C.
  
  0.5
- D.
  
  0.4816

Related Topics

More Chemistry Quizzes

A Test On Atoms, Elements, And Molecules!

This quiz can be used as a pre-test for a unit on atoms, molecules, elements, and compounds. The quiz will, along with a post-test, serve as a method to determine how much the students have learned after the science unit has been...

Questions: 10 | Attempts: 37231 | Last updated: Jun 23, 2020

Sample Question
All matter consists of particles called________________.

Units

Atoms

Cubes

Pints

Chemistry- Mixtures, Elements & Compounds Quiz!

We came to know the difference between a mixture, compound, and an element in chemistry class. A compound is a substance made up of two or more elements, whereas an element is a substance that cannot be split into simpler...

Questions: 33 | Attempts: 20886 | Last updated: Feb 17, 2021