Answer; 1. Iron rods / iron safes 2. Steel vessels exposed to water 3. Car doors. 4. down the sink. 5. pins etc This can be reduced by p...
Chemistry लेबलों वाले संदेश दिखाए जा रहे हैं. सभी संदेश दिखाएं
Chemistry लेबलों वाले संदेश दिखाए जा रहे हैं. सभी संदेश दिखाएं
What is meant by RCC? write its two uses
Answer; RCC = Reinforced Cement Concrete. It is used in Building's roofs, slabs etc and it is used in Making gutters and bridges
Why does a dry cell become useless if not used for a long time?
Answer: A dry cell always has some internal resistance. Just because of its internal resistance there is some voltage drop associated w...
The chapati swells up when kept on hot plate
Answer: We make chapati with wet dough which has water in it. When the wet dough is put on the hot plate, the water in the dough gets c...
the mole fraction of ethanol in the ethanol water mixture is 0.25 . the percentage concentration of the mixture by weight of ethanol is ?
Answer: If ethanol is 0.25, then H2O will be 0.75. Mol wt of ethanol is 46.06g/mol, So, 0.25 mol= 11.515g of ethanol Mol wt of H2O is 18....
Mentions and describes the application of various types of reactions that are used in a variety of techniques or technology
Answer: Different type of Reactions used in varios techniques or technology The polymerase chain reaction (PCR) is a bio chemical techn...
State the atomicity of the following molecules, 1) Oxygen, 2) Phosphorous, 3) Sulphur, 4)argon
Answer: 1.Oxygen atomicity = Diatomic. 2.Argon atomicity = Monoatomic. 3.Phosphorus atomicity = Tetra atomic. 4.Sulphur atomicity ...
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