Physicswallah Smart class Coordinator Interview Questions and Answers

Chlorine gas reacts differently with cold and hot alkali.

• Chlorine gas reacts with cold alkali to form hypochlorite and chloride ions.

• With hot alkali, it reacts to form chlorate and chloride ions.

• The reaction with hot alkali is more vigorous than with cold alkali.

• Chlorine gas is a strong oxidizing agent and can react with many substances.

Yes, red phosphorous can react with alkali.

• Red phosphorous can react with strong alkalis like sodium hydroxide or potassium hydroxide.

• The reaction produces phosphine gas and the corresponding salt of the alkali metal.

• The reaction is exothermic and can be dangerous if not carried out properly.

• Red phosphorous is often used in the production of methamphetamine, where it is reacted with alkalis to produce phosphine gas.

To check if the CPU is not powering on, follow these steps:

• Check if the power cable is properly connected to the CPU

• Ensure that the power outlet is functioning correctly

• Check if the power button on the CPU is working

• Inspect the power supply unit for any signs of damage

• Try using a different power cable or power outlet

• If none of the above steps work, consider seeking professional assistance

The PC is not functioning and cannot be turned on.

• Check if the power cable is properly connected to the PC and the power outlet.

• Ensure that the power outlet is working by plugging in another device.

• Try pressing the power button to turn on the PC.

• Check if there are any error messages or beeping sounds when attempting to turn on the PC.

• If the PC still doesn't turn on, it may be a hardware issue and professional assistanc