Chemistry Water is not effective in extinguishing a fire caused by petrol because Water and petrol react chemically Water and petrol are miscible with each other Water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn The flame is too hot for water to cool it down Water and petrol react chemically Water and petrol are miscible with each other Water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn The flame is too hot for water to cool it down ANSWER DOWNLOAD EXAMIANS APP
Chemistry Ultraviolet radiation striking the earth is due to the depletion of Ozone Carbon dioxide Carbon monoxide Oxygen Ozone Carbon dioxide Carbon monoxide Oxygen ANSWER DOWNLOAD EXAMIANS APP
Chemistry The ionic radii of N3-, O2-, F- and Na+ follows the order Na+ > O2- > N3- > F- N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- N3- > O2- > F- > Na+ Na+ > O2- > N3- > F- N3- > Na+ > O2- > F- O2- > F- > Na+ > N3- N3- > O2- > F- > Na+ ANSWER DOWNLOAD EXAMIANS APP
Chemistry The heat required to raise the temperature of body by 1 K is called specific heat None of these thermal capacity water equivalent specific heat None of these thermal capacity water equivalent ANSWER DOWNLOAD EXAMIANS APP
Chemistry Main source of lead pollution is from Sewage Leaded gasoline Tobacco Insecticides Sewage Leaded gasoline Tobacco Insecticides ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which among the following coal contains 90 per cent of carbon? Lignite Peat Bitumen Anthracite Lignite Peat Bitumen Anthracite ANSWER DOWNLOAD EXAMIANS APP