In testing of Cement the formula for water requirement for setting time is as below- Water required for setting time = NC x 0.85 The question is that what is the logic of 0.85 in this formula??

2030

In which situation we require to prepare the standard solution from sample in Related substance method?

284

which batch require to use for analytical method validation?

326

What happens when the excess of stannous chloride is not removed

680

in each media we require to use SLS? how to proceed?

290

pls send me ongc privious entarnace exam papers

1792

What is the Formula for coreletion coefficient in plhplc calibration

1237

why using HCLO4 in potentiometry?. what are the chacterestics of HCLO4.

3191

how the compound separate in coulunm,explain

1943

My question about gas chromatography sulfur chemiluminsecence detector. I test unknown sample gas by GC-SCD (calibrated ) and the result of *H2S is 279 PPM , *but when I test the same sample with the GC-TCD (calibrated ) the value of *H2S is 2500 PPM . I'd like to inform you that both GCs are calibrated and have very good operation conditions with stable parameters . the question is if the sample gas with higher H2S over detection limits of SCD detector (1000 ppm). why the result it 279 ppm Best regards

1105

How to caluclate %w/v& %w/w ple give examples solids&liquids 10%NAOH W/W 10%W/V- 20%HCL W/W &W/V

2060

what is the procedure for cleaning of lenses of hatr accesory of ftir instrument?

1798

Explain Thiele's structure for benzene. What is the difference between thiele's structure and modern structure (resonance hybrid) of benzene?

4617

Barc in chemistry

833

In HPLC Calibration, On which basis RSD Limit of noise test is fixed (NMT 33.0 % )

2955