PHYSICS(P2) 2022 May/June Question 1 Activity

Activity Summary

0 of 10 Questions completed

Questions:

You have already completed the activity before. Hence you can not start it again.

Activity is loading…

You must sign in or sign up to start the activity.

You must first complete the following:

Results

Activity complete. Results are being recorded.

Results

0 of 10 Questions answered correctly

Your time:

You have reached 0 of 0 point(s), (0)

Average score
Your score

Categories

Physical Sciences Gr12 0%

maximum of 20 points
Pos.	Name	Entered on	Points	Result
Table is loading
No data available

Current
Review / Skip
Answered
Correct
Incorrect

Question 1 of 10

1. Question
QUESTION 1: MULTIPLE-CHOICE QUESTIONS
Various options are provided as possible answers to the following questions.
Each question has only ONE correct answer. Choose the answer and write only the
letter (A–D) next to the question numbers (1.1 to 1.10) in the ANSWER BOOK,
e.g. 1.11 E.
This is how your instructions will be in the exam. For this pratice, just select the correct answer.

1.1
Which ONE of the following compounds has the LOWEST melting point?
- A. Hexane
- B. Ethane
- C. Butane
- D. Octane
Correct

Incorrect
Question 2 of 10

2. Question
1.2
When
= is converted to ,
the type of reaction is …
- A. hydration.
- B. hydrolysis.
- C. halogenation.
- D. hydrogenation.
Correct

Incorrect
Question 3 of 10

3. Question
1.3
Which ONE of the following compounds in solution will change the colour of
bromothymol blue?
- A. ..
- B. ..
- C. .
- D.
Correct

Incorrect

Hint

Bromothymol blue is a pH indicator. It is mostly used in applications that require measuring substances that would have a relatively neutral pH. A common use is for measuring the presence of carbonic acid in a liquid. Bromothymol blue (BMB) is an indicator dye that turns yellow in the presence of acid. When carbon dioxide is added to the solution, it creates carbonic acid, lowering the pH of the solution.
Question 4 of 10

4. Question
1.4
Two DIFFERENT samples of IMPURE CaCO3 of EQUAL masses react with
. Assume that the impurities do not react.
The graph below shows the volume of CO2(g) produced for each reaction.

When compared to reaction 2, which ONE of the following statements BEST
explains the curve obtained for reaction 1?
- A. ..The temperature is higher in reaction 1.
- B. The surface area is greater in reaction 2
- C. The amount of impurities is greater in reaction 2.
- D. The amount of impurities is greater in reaction 1.
Correct

Incorrect
Question 5 of 10

5. Question
1.5
- A. .50
- B. 60
- C. 110
- D. 160
Correct

Incorrect
Question 6 of 10

6. Question
1.6
- A. .Adding water
- B. Cooling the flask
- C. Adding NaOH(aq)
- D. Adding NH4Cℓ(aq)
Correct

Incorrect
Question 7 of 10

7. Question
1.7
Dilute nitric acid is added to distilled water at 25 °C.
How will this affect the hydronium ion concentration [H3O+] and the ionisation
constant (Kw) of water at 25 °C?
- A.
- B.
- C.
- D.
Correct

Incorrect
Question 8 of 10

8. Question
1.8

Which ONE of the following combinations represents the formulae of X and Y
respectively?
- A.
- B.
- C.
- D.
Correct

Incorrect
Question 9 of 10

9. Question
1.9
- A.
- B.
- C.
- D.
Correct

Incorrect
Question 10 of 10

10. Question
1.10
The following reaction takes place in an electrochemical cell:
CuCℓ2(aq) → Cu(s) + Cℓ2(g)
Which ONE of the following is CORRECT for this cell?
- A. It is a galvanic cell.
- B. A power source is needed.
- C. The reaction is spontaneous.
- D. Copper acts as the oxidising agent.
Correct

Incorrect