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Q. Name the various steps required for making water suitable for domestic use.
Ans. Treatment process for domestic use
S. No.
Process use for treatment
Impurities removed
1.
screening
Floating materials like sand, clay etc.
2.
Sedimentation with coagulation
Fine suspended inorganic matter
3.
Filtration
Colloidal impurities and larger organisms
4.
Disinfection
Pathogenic bacteria
5.
sedimentation
Suspended impurities like sand, clay etc.
The charge of an electron is -1.6 x10 -19 C. The value of free charge on Li + ion will be: (1) 3.6x 10 -19 c (2) 1x 10 -19 c (3) 1.6 x 10 -19
h2c2o4 + mno-4 - mno-4 +co2
Laboratory safety During your observation of chemistry you will conduct experiments in the laboratory. When working in the lab you are accountable for the safety of yourself and o
copper reacts with oxygen to form two oxide X and Y .On analysis 1.535g of X yielded 1.365g of copper and 1.450g of Y yielded 1.160g of copper. [I] determine the chemical formula
Q. Major functions of emulsifiers? The major functions of emulsifiers in food systems are as follows. The emulsifier: • modifies the intermolecular forces which stabilize
reactions in a mercury button cell
Is liquid ammonia is solvent?
caustic embrittlement
Treatment of water by Clarks method
i) Electrophillic substitution in case of aromatic amines takes place more readily than benzene. ii) Nitro compounds have higher boiling points than hydrocarbons having almost s
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