2026 H2 Timed Practice Paper 1 MCQ (Question Paper)

1 NJC SH2 Timed Practice 9476/1/26 [Turn over NATIONAL JUNIOR COLLEGE SH2 TIMED PRACTICE Higher 2 CANDIDATE NAME SUBJECT CLASS REGISTRATION NUMBER CHEMISTRY Paper 1 Multiple Choice Additional Materials: Optical Answer Sheet Data Booklet 9476/01 16 July 2026 1 hour READ THESE INSTRUCTIONS FIRST Write in soft pencil. Do not use staples, paper clips, glue or correction fluid. Write your name, subject class and registration number on the Answer Sheet in the spaces provided unless this has been done for you. There are thirty questions on this paper. Answer all questions. For each question there are four possible answers A, B, C and D. Choose the one you consider correct and record your choice in soft pencil on the separate Answer Sheet. Read the instructions on the Answer Sheet very carefully. Each correct answer will score one mark. A mark will not be deducted for a wrong answer. Any rough working should be done in this booklet. The use of an approved scientific calculator is expected, where appropriate. A Data Booklet is provided. Instructions on how to fill in the Optical Mark Sheet Shade the index number in a 5 digit format on the optical mark sheet: 2nd digit and the last 4 digits of the Registration Number. Example: Student Examples of Registration No. Shade: 2505648 55648 This document consists of 16 printed pages including 1 blank page..

2 NJC SH2 Timed Practice 9476/1/26 1 Use of the Data Booklet is relevant to this question. Which sample of gas contains twice the number of atoms as 4 g of helium gas, He? A 4 g of hydrogen, H2 B 8 g of methane, CH4 C 12 g of steam, H2O D 22 g of carbon dioxide, CO2 2 The isotope of an element has a nucleon number of 112. It forms an ion with a charge of +2 with the electron configuration [Kr]4𝑑10. How many protons, neutrons, and electrons are present in this ion? A 46 protons, 66 neutrons, 44 electrons B 46 protons, 66 neutrons, 46 electrons C 48 protons, 64 neutrons, 46 electrons D 48 protons, 64 neutrons, 44 electrons 3 An element R consists of four isotopes. The table below shows the percentage abundance of the isotopes. Relative isotopic mass Percentage abundance /% 90.0 50.0 91.0 10.0 92.0 20.0 94.0 20.0 What is the relative atomic mass of R? A 91.00 B 91.30 C 91.75 D 92.00

3 NJC SH2 Timed Practice 9476/1/26 [Turn over 4 An element X has the following successive ionisation energies. 1st 2nd 3rd 4th 5th Ionisation energy /kJ mol⁻1 786 1580 3230 4360 16000 Given that the oxide of X is acidic and is insoluble in water, which statement about X is correct? A X is a gas at room temperature. B X forms a chloride with a formula XCl5. C The oxide of X has a linear shape with no