MCQ
Which of the following undergoes spontaneous combustion?
- AYellow sulphur
- BRed phosphorus
- ✓White phosphorus
- DBrown sulphur
✓
Answer
Correct option: C.
White phosphorus
White phosphorus undergoes spontaneous combustion. It catches fire on its own at room temperature.
Need a full question paper?
Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.
Explore more
Similar questions
Different zones of a candle flame are marked by the letters $\text{P, Q, R}$ and $\text{S}$.
Which of the following statements are correct?
$i. P$ is the luminous zone and is the hottest part of candle flame.
$ii.$ In zone $Q$, there is inadequate supply of oxygen.
$iii.$ Zone $R$ contains unburnt wax vapours produced by melting of wax.
$iv.$ In $S$ zone, carbon monoxide burns with a blue flame.
→Which of the following statements are correct?
$i. P$ is the luminous zone and is the hottest part of candle flame.
$ii.$ In zone $Q$, there is inadequate supply of oxygen.
$iii.$ Zone $R$ contains unburnt wax vapours produced by melting of wax.
$iv.$ In $S$ zone, carbon monoxide burns with a blue flame.
The pitch of sound depends on:
The epicentre of an earthquake is:
In the above problem, find the position of lower edge of the mirror relative to the ground is.
A student wants to move a heavy block from one place to another. What method the student should apply to reduce the effort?
Four cubical boxes, made up of the same material, are placed on the ground and are pushed with a constant force $d_1, d_2, d_3$ and $d_4$ are the distances travelled by the boxes. They are related as $d_3 > d_2 > d_4 > d_1$ The sides $a_1, a_2, a_3$ and $a_4$ of the respective boxes are related as.
→Animals are protected in their natural habitats in a __________ .
Identify $R, S$ and $T$ in the given figure.
→What is the gap between the orbit of mars and Jupiter called?
Two boys $A$ (left side) and $B$ (right side) are applying force on a block. If the block moves towards the right, which one of the following statements is correct?
→