Download App

Materials : Metals and Non-Metals — Science STD 8 — Question

Gujarat BoardEnglish MediumSTD 8ScienceMaterials : Metals and Non-Metals2 Marks
Question
Why is phosphorus kept under water?
✓

Answer

Metals react with water to produce hydrogen gas. Phosphorus cannot be kept open in the air because it combines with oxygen so easily that it catches fire automatically. For safety, phosphorus is stored under water in chemical laboratories.

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 "questions in short. [2 marks ]" from Materials : Metals and Non-Metals→Materials : Metals and Non-Metals — all question types→Science STD 8 question papers→Gujarat Board STD 8 question papers→Gujarat Board question paper generator→

Similar questions

What are the two types of crops based on seasons? Give one e ample of each type.
→
Why is tin electroplated on iron to make cans used for storing food?
→
What is meant by lubrication ? Why is it important?
→
In an electroscope, if a negatively charged body is brought in contact with the metal clip, the strips of the electroscope diverge. If now another charged object carrying an equal amount of positive charge is brought in contact with the clip, what will happen?
→
What type of reflection of light takes place from?
$i.$ A cinema screen?
$ii.$ A plane mirror?
→
What is the role of muscular force in daily life?
→
A father and son pushed their car to the side of road as it had stalled in the middle of the road. They experienced that although they had to push with all their might initially to move the car, the push required to keep the car rolling was smaller, once the car started rolling. Explain.
→
Is it possible to predict the occurrence of an earthquake?
→
A person is in open space during a thunderstorm with no shelter (not even a tree) available nearby. Describe the safe position which he should take to protect himself from lightning. Why is this position considered safe?
→
Explain how can we purify the impure metals?
→