test for starch- dissolving in water+heating+cooling+3-4 drops of tincture iodine, if present, dark blue colour will appear.
test for colour- dissolving in water + HCL ,if metanil yellow colour is present, pink colour will appear.
Khoya/ Mawa is sweet evaporated milk used in many Indian dishes. These evaporated milks are readily available throughout India but many people choose to make their own at home due to purity problems with store bought versions. The purity of the milk can be tested with a lactometer, though these aren't really made for home use.
Khoya Khoya Chand was created on 2007-11-08.
Khoya Khoya Chand - 2007 is rated/received certificates of: Portugal:M/12
test tungsten purity
You test it by checking the melting point
The best and trusted way is by chemical test
Bisleri
monkey
Purity tests are used to determine the extent to which a particular substance is what is claimed. A classic purity test for gold is nitric acid; if the item being examined reacts to the acid it is not gold, or at least not pure gold.
Ephedrine can show a false positive for amphetamines on a drug test.
by mohr's method
malleability