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Pre AP Chemistry -1.1B Measurement Precision and Experimental Data- MCQ Exam Style Questions -New Syllabus 2025-2026

Pre AP Chemistry -1.1B Measurement Precision and Experimental Data- MCQ Exam Style Questions – New Syllabus 2025-2026

Pre AP Chemistry -1.1B Measurement Precision and Experimental Data- MCQ Exam Style Questions – Pre AP Chemistry – per latest Pre AP Chemistry Syllabus.

Pre AP Chemistry – MCQ Exam Style Questions- All Topics

Question

A student mixes \(25 \mathrm{~cm}^3\) samples of dilute hydrochloric acid with different volumes of aqueous sodium hydroxide.

In each case, the student measures the change in temperature to test if the reaction is exothermic.
Which piece of apparatus is not needed?

▶️ Answer/Explanation
Solution

Ans: B

To measure the temperature change in an exothermic reaction, the following apparatus are needed:

  • Burette/Pipette: To accurately measure volumes of acid and alkali.
  • Thermometer: To record the temperature change.

A clock is unnecessary because the reaction is instantaneous, and temperature change does not require time measurement. Thus, the correct answer is B (clock).

Question

A thermocouple is used to measure temperature.

Which is an advantage of using a thermocouple instead of a liquid-in-glass thermometer?

  1. It can measure temperature in the range –10 °C to 110 °C.

  2. It can measure temperature that changes rapidly.

  3. It has a linear scale.

  4. It is more sensitive.

Answer/Explanation

Ans: B

Question

To mark a temperature scale on a thermometer, standard temperatures known as fixed points are needed.

Which of these is a fixed point on the Celsius scale?

A. room temperature

B. the temperature inside a freezer

C. the temperature of pure melting ice

D. the temperature of pure warm water

Answer/Explanation

Ans: C

Question 

A student measures the volumes of three liquids using three different measuring cylinders.

The table shows the volumes recorded by the student.

Which readings are correctly recorded?

A) 1, 2 and 3
B) 1 and 2 only
C) 1 and 3 only
D) 1 only

▶️Answer/Explanation

Ans: C

Question

A measuring cylinder contains water.
The diagrams show the measuring cylinder before and after some of the water is poured into a beaker.

How much water has been poured into the beaker?
A \(51 \mathrm{~cm}^3\)

B \(52 \mathrm{~cm}^3\)

C \(55 \mathrm{~cm}^3\)

D \(63 \mathrm{~cm}^3\)

▶️Answer/Explanation

Ans:C

Question

 student uses a measuring cylinder to measure the volume of some water. The diagram shows

part of the measuring cylinder. The top and bottom of the meniscus are labelled.

                    

What is the volume of the water?

A 47.0 cm^3

B 47.5 cm^3 ‘

C 49.0 cm^3

D 49.5 cm^3

Answer/Explanation

Ans: A

Question

A student is asked to find the volume of a small irregularly-shaped piece of rock.

He has the following apparatus available.

 

Which apparatus must the student use to find the volume of the small piece of rock?

    1. balance and rule

    2. rule only

    3. balance and measuring cylinder

    4. measuring cylinder only

Answer/Explanation

Ans: D

Question

The diagrams show the readings on a measuring cylinder before and after a small metal cube

is added.

               

How many more identical cubes can be added to the cylinder, without causing the water to

overflow? Do not include the cube already in the cylinder.

A 1

B 2

C 3

D 4

Answer/Explanation

Ans: B

Question

A student wishes to measure accurately the volume of approximately 40 cm3 of water. She has

two measuring cylinders, a larger one that can hold 100 cm3, and a smaller one that can hold

50 cm3. The water forms a meniscus where it touches the glass.

         

Which cylinder should the student use and which water level should she use to ensure an

accurate result?

 

cylinder

water level

A

larger one

bottom of meniscus

B

larger one

top of meniscus

C

smaller one

bottom of meniscus

D

smaller one

top of meniscus

Answer/Explanation

Ans: C

Question

A geologist compares the volumes of three rocks, X, Y and Z. Three measuring cylinders contain

different volumes of water. He places each rock into one of the measuring cylinders.

The diagrams show the measuring cylinders before and after the rocks are put in.

Which row shows the volumes of X, Y and Z in order, from largest to smallest?

Answer/Explanation

Ans: B

Question

Diagram 1 shows a measuring cylinder containing water.

Five identical steel balls are now lowered into the measuring cylinder. Diagram 2 shows the new

water level in the cylinder.

                       

What is the volume of each steel ball?

A 6 cm^3                  

B 14 cm^3                    

C 30 cm^3                   

D 70 cm^3       

Answer/Explanation

Ans: A

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