Materials for Storing Acids
Acids are substances that can be highly reactive and corrosive. This means they can potentially damage or react with the material of the container they are stored in. Therefore, choosing the right container material is crucial for safety and to prevent contamination or degradation of the acid.
Evaluating Container Material Options for Acids
When selecting materials for storing acids, it's important to consider their chemical inertness and resistance to corrosion. Let's look at the options provided:
- Rubber and cardboard: Cardboard is made from paper pulp and is highly susceptible to damage from liquids, especially corrosive acids. Rubber might offer some resistance to certain acids, but it's not a universal or primary choice for storing a wide range of acids.
- Wood and paper: Similar to cardboard, wood and paper are organic materials that readily absorb liquids and are easily degraded by acids. They offer virtually no protection and are unsuitable for acid storage.
- Metals and plastic: Many common metals react significantly with acids, leading to corrosion and potential container failure (e.g., rusting of iron). While certain specialized plastics (like polyethylene or polypropylene) are resistant to many acids, the combination with metals in this option makes it less ideal compared to other choices, as many metals are unsuitable.
- Glass and ceramics: These materials are known for their excellent chemical stability and resistance to corrosion by a wide variety of acids. Glass, in particular, is widely used in laboratories for storing and handling acids due to its inert nature. Glazed ceramics also provide a durable and non-reactive surface suitable for acid containment. (Note: Hydrofluoric acid is an exception as it attacks glass).
Preferred Materials for Acid Containers
Based on chemical properties, glass and ceramics stand out as highly suitable materials for storing most types of acids. Their resistance to chemical attack ensures the integrity of the container and prevents contamination of the stored acid. This makes them the most appropriate choice among the given options for general acid storage.
Important Questions from Miscellaneous
A stone is thrown horizontally from the top of a 20 m high building with a speed of 12 m/s. It hits the ground at a distance R from the building. Taking g = 10 m/s2 and neglecting air resistance will give :
A mass is attached to a spring that hangs vertically. The extension produced in the spring is 6 cm on Earth. The acceleration due to gravity on the surface of the Moon is one-sixth of its value on the surface of the Earth. The extension of the spring on the Moon would be:
Directions: Each item in this section consists of a sentence with an underlined word followed by four words (a), (b), (c), and (d). Select the option that is opposite in meaning to the underlined word and mark your response in your Answer Sheet accordingly.
The deluge affected the population.The major source of vitamins and minerals for vegetarians is
Which of the following statements about the Deccan Riots Commission is/are correct?
1. The Commission did not hold enquiries in the districts which were not affected.
2. The Commission did record the statements of ryots, sahukars and eye-witnesses.
Select the correct answer using the code given below:
