Chemistry
Stainless steel is usually made by alloying the steel with

Copper and nickel
Chromium and nickel
Copper and chromium
Manganese and copper

ANSWER DOWNLOAD EXAMIANS APP

Chemistry
Why is water not suitable for putting out a petrol fire ?

The oxygen content of water is isolated by petrol and thus it helps in burning
The heat required for combustion of petrol is very low
Water, being heavy, slips below petrol which thus remains in contact with air and burns
Petrol is too inflammable to be extinguished by water

ANSWER DOWNLOAD EXAMIANS APP