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NCERT Solutions for Class 8 Science - Safety and First Aid

Q1: Name any three causes of fire.
Ans: The three causes of fire are:

  1. Carelessness while handling burning match sticks, candles etc.
  2. Electric faults
  3. Gas leakageNCERT Solutions for Class 8 Science - Safety and First Aid

Q2: Why should we not operate any electrical switches when there is a gas leak?
Ans: We should not operate any electrical switches when there is a gas leak because the electrical switches generate sparks while being switched on and off.  The fumes of gas are highly flammable and even the smallest of sparks, due to switching of the electric switch, can ignite a huge fire.

Q3: What should be done in case a person’s clothing catches fire?
Ans: In case a person’s clothing catches fire he or she should be rolled on the floor to control the flames quickly. One of the best ways to extinguish the fire is to cover the person with a woollen blanket. By covering with a blanket, we are preventing the supply of oxygen, which is a supporter of combustion. Water can also be used to control the flames but throwing water on them is not a suitable thing if the fire has been caused due to electricity. 

NCERT Solutions for Class 8 Science - Safety and First AidQ4: What is a fracture? What should be done in case of fracture?
Ans: A break or crack in a bone is called a fracture. The fractured part should not be moved and the victim should be taken to the hospital immediately. For example: If the fracture is in the hand, a cloth sling should be used to prevent movement.

Q5: How can fire hazards be prevented?
Ans: The ways to prevent fire hazards are:

  1. We should be very careful while handling fire.
  2. Electrical appliances and wiring should be checked regularly for faults or breaks in the plastic coverings of the wires.
  3. Synthetic clothes like nylon should not be worn while burning, handling fire or cooking as synthetic clothes can catch fire easily.
  4. In case of a gas leak, all the doors and windows should be opened. No one should strike a match or operate any electrical switches in such a case because electrical switches generate sparks while being switched on and off. Faulty gas pipes should also be replaced.

Q6: Explain how we put out different kinds of fires.
Ans: Different kinds of fires can be put out in the following ways:

Major fire:

  1. The nearest fire station should be informed.
  2. Firefighters put out fires with the help of their fire engines major fire small fires can be put out using a special instrument called the fire extinguisher.

Fire due to electric faults:

  1. This fire is never put out using water because electricity can flow through water.
  2. such fires are put using sand or fire extinguishers.

Fire from petrol:

  1. This is also put out using sand.

Q7: Define first aid. What first aid should be given to a person with minor burns?
Ans: The first or immediate help given to injured people before they are taken to a hospital is called a first aid. In case of minor burns, the burnt area should be held under cool running water for some time. An antiseptic cream or a paste of baking soda and water should be applied on the burn.
Minor burnMinor burnQ8: What is rabies? How can you give immediate help to a person in case of an animal bite?
Ans: Rabies is a disease caused due to an animal bite. In case of an animal bit, wash the wound with running water and cover it with a clean bandage. Take the patient to the hospital immediately. For bee stings, apply a paste of baking soda or toothpaste. For wasp stings apply vinegar or lemon juice.

Animal biteAnimal bite

The document NCERT Solutions for Class 8 Science - Safety and First Aid is a part of the Class 5 Course Science Class 5.
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FAQs on NCERT Solutions for Class 8 Science - Safety and First Aid

1. How can I ensure safety in my home?
Ans. You can ensure safety in your home by keeping all hazardous objects out of reach of children, installing smoke detectors, having a first aid kit handy, and practicing fire drills regularly.
2. What should I do in case of a minor burn?
Ans. In case of a minor burn, you should run cool water over the burn for about 10-15 minutes, clean the burn with mild soap and water, and cover it with a sterile bandage.
3. How can I help someone who is choking?
Ans. To help someone who is choking, perform the Heimlich maneuver by standing behind the person, wrapping your arms around their waist, and giving quick thrusts to their abdomen until the object is dislodged.
4. What should I do if someone is unconscious?
Ans. If someone is unconscious, check for breathing and pulse, call for emergency help, and perform CPR if necessary until help arrives.
5. How can I prevent accidents while playing outdoors?
Ans. To prevent accidents while playing outdoors, always wear appropriate safety gear, follow the rules of the game or activity, and be aware of your surroundings to avoid potential hazards.
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