Safety and First Aid (Class 5)

What this worksheet covers

This is an eighteen-question practice worksheet on safety and first aid for Class 5, written to the pattern of the SOF National Science Olympiad (NSO). It carries 24 marks and is designed to be attempted in 40 minutes, split across three sections — Staying Safe, Apply and Reason and Achievers Section. Every question is multiple choice with exactly one correct option, and every one comes with a fully worked solution rather than just an answer key — so a child who gets one wrong can see where the reasoning went astray instead of only learning that it did.

Skills your child practises

• Applied problem-solving on safety and first aid at Class 5 level
• Working accurately against a time limit, as the real paper demands
• Staying Safe questions in the olympiad format
• Apply and Reason questions in the olympiad format
• Achievers Section questions in the olympiad format
• Reading worked solutions to find the step that went wrong

How to use it

1. 1There are 18 questions in this worksheet. All questions are compulsory.
2. 2Each question has four options (A), (B), (C) and (D). Exactly one option is correct.
3. 3Questions 1–15 carry 1 mark each. Questions 16–18 (Achievers Section) carry 3 marks each.
4. 4There is no negative marking. Do not use a calculator.
5. 5Study every diagram and table carefully before answering.

Sample questions from this worksheet

A preview of what's inside Safety and First Aid (Class 5) — the PDF has the full set, and every question comes with a worked solution like these.

1. 1. At a traffic signal, a red light means that you should _______.

   • AGo ahead
   • BTurn left
   • CGet ready to move
   • DStopcorrect
   Solution: Red means stop, amber (yellow) means get ready and slow down, and green means go. Every vehicle and pedestrian must halt behind the stop line when the light is red.

2. 2. Assertion (A): Water should never be poured on a fire caused by an electrical short circuit.Reason (R): Water is a poor conductor of electricity.Choose the correct option.

   • ABoth A and R are true, and R explains A
   • BBoth A and R are true, but R does not explain A
   • CA is true but R is falsecorrect
   • DA is false but R is true
   Solution: A is true — water must never be used on an electrical fire. R, however, is false: ordinary water (with its dissolved salts) is a good conductor, and that is exactly why the shock can travel back up the stream of water to the person pouring it. The right action is to switch off the main supply and use a dry chemical or carbon dioxide extinguisher.

3. 3. Consider the following statements.(i) First aid is a complete substitute for treatment by a doctor.(ii) A fire needs fuel, heat and air in order to keep burning.(iii) Overloading a single socket with many appliances can cause a short circuit and a fire.Which of the statements is/are correct?

   • A(i) and (ii) only
   • B(ii) and (iii) onlycorrect
   • C(i) and (iii) only
   • DAll three
   Solution: Statement (i) is false — first aid only keeps the patient safe until proper medical treatment is available; it never replaces a doctor. Statement (ii) is true, and removing any one of the three (fuel, heat, air) puts the fire out. Statement (iii) is true; too many appliances draw a large current, the wires overheat and the insulation can catch fire. Hence (ii) and (iii).