please tell the answers question no. 6
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brass is made up of Copper and Zinc
materials in duralumin are copper, manganese and magnesium
tap water consists of water and calcium and magnesium salts which are helpful for our body
crude petroleum consists of petrol ke Rosy and diesel works natural gas etc cetera which can be extracted from crude petroleum through fractional distillation process
materials in duralumin are copper, manganese and magnesium
tap water consists of water and calcium and magnesium salts which are helpful for our body
crude petroleum consists of petrol ke Rosy and diesel works natural gas etc cetera which can be extracted from crude petroleum through fractional distillation process
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a)Brass is an alloy of copper and zinc
b) Duralumin contains 4 percent copper, 0.5–1%manganese, 0.5–1.5 %magnesium,some silicon.
c) Tap water contains contaminants like toxic metal salts, hormones and pesticides.
d)The hydrocarbons in crude oil are mostly paraffins, cycloalkanes and various aromatic hydrocarbons while the other organic compounds contain nitrogen, oxygen and sulfur, and trace amounts of metals such as iron, nickel, copper and vanadium.
b) Duralumin contains 4 percent copper, 0.5–1%manganese, 0.5–1.5 %magnesium,some silicon.
c) Tap water contains contaminants like toxic metal salts, hormones and pesticides.
d)The hydrocarbons in crude oil are mostly paraffins, cycloalkanes and various aromatic hydrocarbons while the other organic compounds contain nitrogen, oxygen and sulfur, and trace amounts of metals such as iron, nickel, copper and vanadium.
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