Hamad Everyday Science Mcqs 15/12/2022 A. Nitrogen B. Hydrogen C. Nickle D. Oxygen Related Mcqs: The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it? A. 10% B. 20% C. 30% D. 50%... Approximate age of earth is ________? A. 4.14 billion years B. 4.64 billion years C. 4.54 billion years D. 4.34 billion years... Epsom salt is chemically known as_________? A. Copper Sulfate B. Magnesium Sulfate C. Ferrous Sulfate D. None of these... Which of the following gases do plants and trees give out during photosynthesis? A. Hydrogen B. Nitrogen C. Oxygen D. Carbon dioxide... Which of the following vitamin is known as Biotin? vitamin B-3 vitamin B-4 vitamin B-5 vitamin B-7...
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