Chemistry The number of hydrogen bonds between guanine and cytosine in DNA is 4 2 1 3 4 2 1 3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry The atomic number of carbon is 6 and its atomic mass is 12. How many are there protons in the nucleus of carbon ? 12 6 18 Zero 12 6 18 Zero ANSWER DOWNLOAD EXAMIANS APP
Chemistry Global warming is mainly due to accumulation of Carbon monoxide Oxides of sulphur Oxides of nitrogen Carbon dioxide Carbon monoxide Oxides of sulphur Oxides of nitrogen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which acid is used in Lead storage battery? Acetic acid Hydrochloric acid Nitric acid Sulphuric acid Acetic acid Hydrochloric acid Nitric acid Sulphuric acid ANSWER DOWNLOAD EXAMIANS APP
Chemistry Electric bulbs are filled with : Oxygen Argon Nitrogen Carbon dioxide Oxygen Argon Nitrogen Carbon dioxide ANSWER DOWNLOAD EXAMIANS APP
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 The flame is too hot for water to cool it down Water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn Water and petrol react chemically Water and petrol are miscible with each other The flame is too hot for water to cool it down Water and petrol are immiscible with each other and petrol which forms the upper layer continues to burn ANSWER DOWNLOAD EXAMIANS APP
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