Quartz crystals normally used in quartz clocks etc. is
chemically
1 Sodium silicate
2 Germanium oxide
3 Silicon dioxide
4 None of these
A mixture of iron filings and sand can be separated by 1 Heating 2 Sublimation 3 Hand picking 4 Magnetic separation
Polythene is industrially prepared by the polymerization of 1 Methane 2 Styrene 3 Acetylene 4 Ethylene
3 Answers Amna Industries, HFI,
How can we calculate %difference in Weighing balance?
Rayon is chemically 1 Glucose 2 Amylase 3 Cellulose 4 Pectin
Bleaching powder is made from 1 Sulphur dioxide and gypsum 2 Chlorine and charcoal 3 Soda ash and lilme 4 Lime and chlorine
Wood is the main raw material for the manufacture of 1 Paint 2 Paper 3 Ink 4 Gun powder
5 Answers Jharkhand Staff Selection Commission JSSC, RRB,
1.how many bones are there in our human body? 2.who invented the aeroplane? 3.the full form for h2o is water 4.the name which is heavier is gold 5.name the symtom which is to cure for night blindness?
what are the advantages and disadvantages of empirical knowledge?
Which metal is used for Galvanisation of iron?
13 Answers ncert, TCS, TNPSC Tamil Nadu Public Service Commission,
WHATE COLOUR OF STAR;SIZE;
The purest form of iron is 1 Steel 2 Cast iron 3 Pig iron 4 Wrought iron
21 Answers CIPET, FCI, HCL, JIPMER, NTSE, PSI Data Systems, RRB, SSC,
Why we use nhexane inplace of hexane in mobilepase preparation