# Physical Sciences Grade 11 KwaZulu Natal June 2021 QP

> Grade 11 Physical Sciences question paper from the KwaZulu Natal June 2021, 9 pages. Read online or get the free PDF download, memo linked when available.

- Page: https://www.hlayiso.com/library/physical-science-grade-11-june-2021-qp-only/acc1a9bd-b2c3-458a-b433-77f621061748
- Updated: 2026-09-27
- Subject: Physical Sciences
- Grade: Grade 11
- Document type: Question paper
- Year: 2021
- Exam period: KwaZulu Natal June
- Curriculum: CAPS
- Pages: 9

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## About this document

Physical Sciences · Grade 11 · KwaZulu Natal June · 2021. Question paper, 9 pages. Read online or download the PDF.

Read it free online on the page above; download the PDF from there.

## Document text

Text extracted from the PDF. Layout, diagrams and tables may not survive extraction.

### Page 1

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EDUCATION
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PHYSICAL SCIENCES
COMMON TEST
JUNE 2021

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GRADE 11 |

TIME: 1hour

MARKS: 50

| This question paper consists of 7 pages and 2 data sheets.

### Page 2

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Physical Sciences 2 June 2021 Common Test

NSC

INSTRUCTIONS AND INFORMATION TO CANDIDATES

8.
9.

Write your name on the ANSWER BOOK.

This question paper consists of FOUR questions. Answer ALL the questions in the
ANSWER BOOK.

Start EACH question on a NEW page in the ANSWER BOOK.

Number the answers correctly according to the numbering system used in this
question paper.

Leave ONE line between two subsections, for example between
QUESTION 2.1 and QUESTION 2.2.

You may use a non-programmable calculator.
You may use appropriate mathematical instruments.

You are advised to use the attached DATA SHEET.

Show ALL formulae and substitutions in ALL calculations.

10. Round off your final numerical answers to a minimum of TWO decimal places.

dd.

Give brief motivations, discussions, et cetera where required.

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Physical Sciences 3 June 2021 Common Test
NSC

QUESTION 1 : MULTIPLE CHOICE QUESTIONS

Four options are provided as possible answers to the following questions. Each
question has only ONE correct answer. Write only the letter (A - D) next to the
question number (1.1 — 1.4) in the ANSWER BOOK, for example 1.5 E.

1.1 Two neutral metal spheres X and Y, on an insulating stand, are brought into
contact with each other. A negatively charged rod is held near X without touching

OO)

[ =]

Negatively charged
rod

vat

cae

The spheres are separated and the rod is removed. The charges on the spheres
X and Y after separation will be...

Positive and negative respectively

Both neutral

Both positive

Negative and positive respectively (2)

0QWD

1.2 Two identical small metal spheres on insulated stands carry equal charges and
are a distance d apart. Each sphere experiences an electrostatic force of
magnitude F. The spheres are now placed a distance 3 d apart.

The magnitude of the electrostatic force each sphere now experiences is ...

A 3F

B Y, F

Cc 9F

D I/.F (2)

1.3. Which ONE of the following substances has dipole-dipole forces between
the molecules?

A te

B CO,

Cc  H,0

DCH, (2)

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Physical Sciences 4 June 2021 Common Test
NSC

1.4 The number of atoms in 2g of Hz is:

A 3,01 x 1078

B 6,02 x 10

Cc 2

D 12,04 x 1078 (2)

[8]

QUESTION TWO
2.1 Two identical spheres, X and Y, are suspended by insulated threads from

a ceiling, as shown in the diagram below.

[ ]
X Y

Sphere X has an excess of 25 electrons and the charge on Y

is unknown.

The spheres are brought into contact with each other and then separated.

The charge on each sphere after separation is 8x10"® C,

Calculate the charge on sphere Y before it made contact with sphere X. (3)

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Physical Sciences 5 June 2021 Common Test
NSC

2.2 A small sphere, P, with a charge of + 15 x 10°C, is suspended from a
light string attached to the ceiling. Sphere, Q, with a charge of
— 30 x 10°C is fixed on an insulated stand directly below P. The
distance between the centres of the two spheres is 2,8 cm. The tension
in the string holding sphere P is 0,05 N.

c

2,8 cm
Sooxi0.c( 2 |

2.2.1 State Coulombs law in words. (2)
2.2.2 Calculate the magnitude of the electrostatic force the spheres exert on

each other. (3)
2.2.3 Calculate the weight of sphere P. (4)
2.3
2.3.1 Define electric field at a point. (2)

2.3.2 The electric field at a distance of 0,032 m from a charged object is
3.61x10° N-C’. What is the magnitude of the electric field at a distance of
0,195 m from the same object? (4)

[18]

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Physical Sciences 6 June 2021 Common Test
NSC

QUESTION 3 (Start on a new page)

A group of learners decided to carry out an investigation to study the effect of intermolecular
forces on the boiling point of the liquids listed in the table below.
The following apparatus was used.

b—— Beaker

Test tube
with liquid

t-——— Thermometer

# +-— Water

re ef Wire gauze
Fripod stand
LIQUID BOILING POINT
(°C)
Acetone 56
Ethanol 78,37
Water 100
3.1. Define boiling point. (2)
3.2 Identify the independent variable in this investigation. (1)
3.3 Why must ethanol be heated in a water bath? (1)
3.4 Explain the difference in the boiling points of acetone and water by referring
to the TYPES of intermolecular forces in these compounds. (4)
3.5 Write a conclusion for this investigation. (1)

3.6 Will the vapour pressure of ethanol to be HIGHER THAN or LOWER THAN
acetone? Give a reason for the answer. (2)
[11]

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Physical Sciences if June 2021 Common Test
NSC

QUESTION 4 (Start on a new page)

4.1. Acompound has the following percentage composition:

58,065% C 7,527%H 34,408 %O

Determine the molecular formula of this compound if its molar mass is
372 g-mol" (5)

4.2 1,29 of magnesium (Mg), is reacted with 250 cm of a hydrochloric acid (HC2)
solution of concentration 0,5 mol-dm® according to the following balanced

equation:
Mg(s) + 2HCl(aq) ————> MgCé,(aq) + Hha(g)
4.2.1 Define limiting reagent (2)
4,2,2 Determine the limiting reagent by means of a calculation (3)

4.2.3 Calculate the volume of H2(g produced if the molar gas volume is 23,2 dm?-mol' (3)

[13}

TOTAL MARKS: 50

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riysival Ourenives June 2021 Common Test

re}
NSC

DATA FOR PHYSICAL SCIENCES GRADE 11

PHYSICS
TABLE 1: PHYSICAL CONSTANTS
NAME SYMBOL VALUE
Acceleration due to gravity g 9,8 ms”
Coulomb's constant k 9,0x 10 N-m -C
Charge on electron e o16 x 102.6
Electron mass Me 9,11 x 107" kg
TABLE 2 : FORMULAE
ELECTROSTATICS
k F
FOS. (kK = 9,0 x 10°N.m?-C*) 4
ge. ke (k= 9,0 x 10°N.m2-c2) | y=.
r Q
TABLE 3: PHYSICAL CONSTANTS
NAME SYMBOL VALUE
Avogadro's constant Na 6,02 x 107 mor’
Molar gas constant R 8,31 J-K*-mol™
Standard pressure p? 1,013 x 10° Pa
Standard temperature T° 273K
TABLE 4: FORMULAE
n= m a= ck
“M Ny
n m V
=— OR = 1 =——
ery °= MV 72

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