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Ignition Temp

The ignition ...

Question

The ignition temperatures of the substances P, Q, R, and S are $20^{o}$ C, $30^{o}$ C, $40^{o}$ C and $50^{o}$ C respectively. Which of them will undergo spontaneous combustion at a room temperature of $25^{o}$ C?

A

R

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B

P

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C

S

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D

Q

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Solution

The correct option is B P

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