Download App

Acids, Bases and Salts — Science STD 10 — Question

CBSE BoardEnglish MediumSTD 10ScienceAcids, Bases and Salts5 Marks
Question
What does a soda-acid type fire extinguisher contain? How does it work?
Explain the working of a soda- acid fire extinguisher with the help of a labelled diagram.
✓

Answer

Working: A soda-acid type fire extinguisher contains a solution of sodium hydrogencarbonate and sulphuric acid in separate containers in separate containers inside them. When the knob of the fire extinguisher is pressed, then sulphuric acid mixes with sodium hydrogencarbonate solution to produce carbon dioxide gas which forms a blanket around the burning substance and cuts off the supply of air to burning substance; this stops the process of burning and fire gets extinguished.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "[5 marks Questions]" from Acids, Bases and Salts→Acids, Bases and Salts — all question types→Science STD 10 question papers→CBSE Board STD 10 question papers→CBSE Board question paper generator→

Similar questions

An element is placed in 2nd Group and 3rd Period of the Periodic Table, burns in presence of oxygen to form a basic oxide.
  1. Identify the element.
  2. Write the electronic configuration.
  3. Write the balanced equation when it burns in the presence of air.
  4. Write a balanced equation when this oxide is dissolved in water.
  5. Draw the electron dot structure for the formation of this oxide.
→
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits-blood group A or O - is dominant? Why or why not?
→
The chemical substance P is made and secreted by the meristematic tissue at the tip of stem (or shoot) of a plant. The chemical substance P is responsible for a phenomenon Q in plants in which the stem bends towards a source of light. The same chemical substance P has an opposite effect on the root of a plant. It causes the root of a plant to bend away from the source of light in a process called R.
  1. What is the chemical substance P?
  2. State whether P prefers to remains in the sunlit side of a stem or in shade.
  3. What is the effect of substance P on the rate of growth of (i) a root, and (ii) a stem?
  4. What is the name of process (i) Q, and (ii) R?
  5. What is the general name of chemical substances like P? Name another substance which belongs to this class of chemical substances.
→
State one difference between artificial kidney and natural kidney?
→
How would you distinguish between baking powder and washing soda by heating?
→
State whether an electric heater will consume more electrical energy or less electrical energy per second when the length of its heating element is reduced. Give reasons for your answer.
→
With a schematic diagram, explain the overall process of respiration.
→
  1. A $6 \Omega$ resistance wire is doubled on itself. Calculate the new resistance of the wire.
  2. Three $2 \Omega$ resistors A, B and C are connected in such a way that the total resistance of the combination is $3\Omega.$ Show the arrangement of the three resistors and justify your answer.
→
With the help of a labelled ray-diagram, describe how a plane mirror forms an image of a point source of light placed in front of it. State the characteristics of the image formed in a plane mirror.
→
Divide the wastes generated from your house into biodegradable and non-biodegradable categories. Suggest methods for their disposal.
→