जॉइन Examsbookउत्तर : 4. "white phosphorus"
An element which is preserved under water is5
प्र: An element which is preserved under water is
- 1sodiumfalse
- 2sulphurfalse
- 3red phosphorusfalse
- 4white phosphorustrue
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उत्तर : 4. "white phosphorus"
व्याख्या :
Answer: D) white phosphorus Explanation: White phosphorus undergoes spontaneous combustion when exposed to air. In order to prevent this spontaneous ignition, it is preserved under water.
समान प्रश्न
Since Nithya and Suganya exchange places, so Rita’s new position is the same as Monika’s earlier position. This position is 17th from the right and 10th from the left. Therefore Number of girls in the row = (16 + 1 + 9) = 26.