Technical Sciences Grade 11 P2 November Mock Exam 2 2026 QP

Mock hlayiso mock exams Practice Series: Grade 11 Exam Preparation WWW.HLAYISO.COM NATIONAL SENIOR CERTIFICATE GRADE 11 TECHNICAL SCIENCES P2 NOVEMBER EXAMINATION 2026 (MOCK) MARKS: 75 TIME: 1½ hours This question paper consists of 7 pages and 2 data sheets. Copyright reserved Please turn over

Technical Sciences/P2 2 Hlayiso/Mock 2026 NSC Mock INSTRUCTIONS AND INFORMATION 1. Write your centre number and examination number in the appropriate spaces on the ANSWER BOOK. 2. This question paper consists of FIVE questions. Answer ALL the questions in the ANSWER BOOK. 3. Start EACH question on a NEW page in the ANSWER BOOK. 4. Number the answers correctly according to the numbering system used in this question paper. 5. Leave ONE line between two subquestions, e.g. between QUESTION 2.1 and QUESTION 2.2. 6. You may use a non-programmable calculator. 7. You may use appropriate mathematical instruments. 8. You are advised to use the attached DATA SHEETS. 9. Show ALL formulae and substitutions in ALL calculations. 10. Round off your FINAL numerical answers to a minimum of TWO decimal places. 11. Give brief motivations, discussions, etc. where required. 12. Write neatly and legibly. Copyright reserved Please turn over

Technical Sciences/P2 3 Hlayiso/Mock 2026 NSC Mock QUESTION 1: MULTIPLE-CHOICE QUESTIONS Various options are provided as possible answers to the following questions. Choose the answer and write only the letter (A–D) next to the question numbers (1.1 to 1.5) in the ANSWER BOOK, e.g. 1.6 D. 1.1 Hot soup is poured into a vacuum flask and the lid is screwed on tightly. If NO heat or matter can pass through the walls or the lid, the flask and the soup form a/an … system. A open B closed C isolated D working (2) 1.2 The SI unit of HEAT CAPACITY is … A J. B J·K–1 . C J·kg–1 . D J·kg–1 ·K–1 . (2) 1.3 The quantity of heat needed to raise the temperature of a 2 kg aluminium block by 5 ◦ C is … A 4,5 kJ. B 9 kJ. C 18 kJ. D 90 kJ. (2) 1.4 Consider the reaction below: Cℓ2 (g) + 2Br– (aq) → 2Cℓ– (aq) + Br2 (ℓ) Which ONE of the following statements is CORRECT? A Cℓ2 is oxidised and is the reducing agent. B Br– is reduced and is the oxidising agent. C Br– is oxidised and is the reducing agent. D Cℓ– is reduced and is the oxidising agent. (2) Copyright reserved Please turn over

Technical Sciences/P2 4 Hlayiso/Mock 2026 NSC Mock 1.5 Which ONE of the following is NOT an application of electrolysis? A Chromium plating of car parts B Extraction of aluminium from its ore C Purification of copper D Supplying electrical energy from a car battery to start the engine (2) [10] QUESTION 2 (Start on a new page.) An old steam engine is displayed at a railway museum in KwaZulu-Natal. During each stroke, steam in the cylinder pushes a piston outwards, as shown in the simplified diagram below. steam in from boiler piston piston pushed out steam flywheel 2.1 Define the term internal energy of a system. (2) 2.2 Write down THREE thermodynamic variables that can be used to describe the state of the steam in the cylinder. (3) 2.3 The steam is the working substance in this engine. Define the term working substance. (2) 2.4 During one stroke, the steam does 1,5 kJ of work on the piston and its internal energy DECREASES by 600 J. Calculate the quantity of heat absorbed by the steam during this stroke, in kJ. (3) [10] Copyright reserved Please turn over

Technical Sciences/P2 5 Hlayiso/Mock 2026 NSC Mock QUESTION 3 (Start on a new page.) 3.1 Define the term heat capacity. (2) 3.2 A cast-iron potjie (pot) with a mass of 1,2 kg is placed on a gas burner. Its temperature rises from 22 ◦ C to 180 ◦ C. Ignore the contents of the pot. Use the specific heat capacity of iron given in TABLE 1 on the data sheet. 3.2.1 Calculate the heat capacity of the potjie. (3) 3.2.2 Calculate the quantity of heat absorbed by the potjie. (3) 3.3 A learner mixes 150 g of water at 85 ◦ C with an unknown mass of water at 15 ◦ C. The final temperature of the mixture is 40 ◦ C. Calculate the unknown mass of water. Assume that no heat is lost to the surroundings. (4) 3.4 To identify an unknown metal, a technician heats a 0,15 kg block of the metal in boiling water to 98 ◦ C. She then quickly places the block in 0,25 kg of water at 20 ◦ C in a polystyrene cup, as shown below. The highest temperature reached by the water is 24,8 ◦ C. thermometer polystyrene cup water metal block 3.4.1 State the law of conservation of heat in words. (2) 3.4.2 Calculate the specific heat capacity of the metal. (6) 3.4.3 Use TABLE 1 on the data sheet to identify the metal. (1) 3.4.4 In practice, some heat is lost from the cup to the surroundings. Will the TRUE specific heat capacity of the metal be HIGHER THAN, LOWER THAN or EQUAL TO the value calculated in QUESTION 3.4.2? Give a reason for the answer. (2) [23] Copyright reserved Please turn over

Technical Sciences/P2 6 Hlayiso/Mock 2026 NSC Mock QUESTION 4 (Start on a new page.) 4.1 Define the term reduction in terms of electron transfer. (2) 4.2 Determine the oxidation number of the UNDERLINED element in each of the following. Show ALL steps. 4.2.1 KCℓO3 (2) 4.2.2 NH+4 (2) 4.2.3 HNO2 (2) 4.3 In a school laboratory, hydrogen gas is passed over heated black copper(II) oxide. The black powder turns into a reddish-brown solid. The balanced equation for the reaction is: CuO(s) + H2 (g) → Cu(s) + H2 O(g) 4.3.1 Use oxidation numbers to explain why this is a REDOX reaction. (2) 4.3.2 Write down the FORMULA of the substance that is reduced. (1) 4.3.3 Which substance is the REDUCING AGENT? Give a reason for the answer by referring to oxidation numbers. (3) 4.4 An aluminium strip is placed in a blue copper(II) sulphate solution. The two half-reactions that take place are: Aℓ → Aℓ3+ + 3e– Cu2+ + 2e– → Cu Write down the balanced NET (overall) ionic equation for this reaction. (2) [16] Copyright reserved Please turn over

Technical Sciences/P2 7 Hlayiso/Mock 2026 NSC Mock QUESTION 5 (Start on a new page.) Grade 11 learners set up the electrochemical cell below to decompose a copper(II) chloride solution, CuCℓ2 (aq). Electrodes P and Q are carbon (graphite) rods. battery – + P Q CuCℓ2 (aq) (blue solution) 5.1 Define the term electrolyte. (2) 5.2 Give TWO reasons why carbon (graphite) is a suitable material for the electrodes in this cell. (2) 5.3 Which electrode, P or Q, is the CATHODE? Give a reason for the answer. (2) 5.4 Write down the half-reaction that takes place at the CATHODE. (2) 5.5 Write down the half-reaction that takes place at the ANODE. (2) 5.6 State what will be SEEN at electrode P and at electrode Q while the cell operates. (2) 5.7 How will the colour of the solution change as the electrolysis continues for a long time? (1) 5.8 Write down the FORMULA of the ion in the solution that moves towards electrode Q. (1) 5.9 The learners now want to use a similar cell to coat (electroplate) an iron key with copper. State TWO changes that they must make to the set-up above. (2) [16] TOTAL: 75 Copyright reserved

Technical Sciences/P2 1 Hlayiso/Mock 2026 NSC Mock DATA FOR TECHNICAL SCIENCES GRADE 11 PAPER 2 TABLE 1: SPECIFIC HEAT CAPACITIES SUBSTANCE SPECIFIC HEAT CAPACITY (J·kg–1 ·K–1 ) Water 4 200 Ice 2 100 Ethyl alcohol 2 460 Methylated spirits 2 400 Aluminium 900 Glass 700 Iron 460 Copper 400 Brass 380 Zinc 380 Mercury 140 Lead 130 TABLE 2: FORMULAE HEAT AND THERMODYNAMICS C = mc Q = mc∆T ∆Q = ∆U + ∆W Copyright reserved Please turn over

Technical Sciences/P2 2 Hlayiso/Mock 2026 NSC Mock TABLE 3: THE PERIODIC TABLE OF ELEMENTS 1 2 13 14 15 16 17 18 (I) (II) 3 4 5 6 7 8 9 10 11 12 (III) (IV) (V) (VI) (VII) (VIII) 1 2 Atomic number 2,1 H He 1 KEY 4 29 3 4 5 6 7 8 9 10 1,0 1,5 Electronegativity 1,9 Cu Symbol 2,0 2,5 3,0 3,5 4,0 Li Be B C N O F Ne 7 9 63,5 11 12 14 16 19 20 11 12 13 14 15 16 17 18 0,9 Na 1,2 Mg 1,5 Aℓ 1,8 Si 2,1 P 2,5 S 3,0 Cℓ Ar Approximate relative atomic mass 23 24 27 28 31 32 35,5 40 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 0,8 K 1,0 Ca 1,3 Sc 1,5 Ti 1,6 V 1,6 Cr 1,5 Mn 1,8 Fe 1,8 Co 1,8 Ni 1,9 Cu 1,6 Zn 1,6 Ga 1,8 Ge 2,0 As 2,4 Se 2,8 Br Kr 39 40 45 48 51 52 55 56 59 59 63,5 65 70 73 75 79 80 84 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 0,8 Rb 1,0 Sr 1,2 Y 1,4 Zr Nb 1,8 Mo 1,9 Tc 2,2 Ru 2,2 Rh 2,2 Pd 1,9 Ag 1,7 Cd 1,7 In 1,8 Sn 1,9 Sb 2,1 Te 2,5 I Xe 86 88 89 91 92 96 101 103 106 108 112 115 119 122 128 127 131 55 56 57 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 0,7 Cs 0,9 Ba La 1,6 Hf Ta W Re Os Ir Pt Au Hg 1,8 Tℓ 1,8 Pb 1,9 Bi 2,0 Po 2,5 At Rn 133 137 139 179 181 184 186 190 192 195 197 201 204 207 209 87 88 89 0,7 Fr 0,9 Ra Ac 226 58 59 60 61 62 63 64 65 66 67 68 69 70 71 Ce Pr Nd Pm Sm Eu Gd Tb Dy Ho Er Tm Yb Lu 140 141 144 150 152 157 159 163 165 167 169 173 175 90 91 92 93 94 95 96 97 98 99 100 101 102 103 Th Pa U Np Pu Am Cm Bk Cf Es Fm Md No Lr 232 238 Copyright reserved