Chemistry Oxygen which is vital for life is a product of photosynthesis and comes from Oxides of mineral elements Carbonates from soil Carbon dioxide Water Oxides of mineral elements Carbonates from soil Carbon dioxide Water ANSWER DOWNLOAD EXAMIANS APP
Chemistry A potato tuber has been cut into two halves. A few drops of iodine solution are placed on the cut surface of one of the halves. What colour change will be noticed? From brown to blue-black From blue to pink From brown to orange-red From pink to blue-green From brown to blue-black From blue to pink From brown to orange-red From pink to blue-green ANSWER DOWNLOAD EXAMIANS APP
Chemistry All isotopes of the same element have ________ The same atomic number but different atomic masses Different atomic numbers and the same atomic mass Different atomic numbers and different atomic mass The same atomic number and the atomic mass The same atomic number but different atomic masses Different atomic numbers and the same atomic mass Different atomic numbers and different atomic mass The same atomic number and the atomic mass ANSWER DOWNLOAD EXAMIANS APP
Chemistry Match the sourc in Column B with the product of Column A. (Product) Column B (Source)A. Formic acid1. LemonB. Citric acid 2. TamarindC. Tartaric acid3. Ants A B C 3 1 2 A B C3 2 1 A B C 2 3 1 A B C 2 1 3 A B C 3 1 2 A B C3 2 1 A B C 2 3 1 A B C 2 1 3 ANSWER DOWNLOAD EXAMIANS APP
Chemistry Which one of the following minerals is found in pure form? Iron Bauxite Copper Manganese Iron Bauxite Copper Manganese ANSWER DOWNLOAD EXAMIANS APP
Chemistry In vulcanisation process, rubber can be hardened by adding Nitrogen Alcohol Sulphur Silicon Nitrogen Alcohol Sulphur Silicon ANSWER DOWNLOAD EXAMIANS APP
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