The metallic constituents of hard water are
1 Magnesium, calcium and tin
2 Iron, tin and calcium
3 Calcium, ,magnesium and iron
4 None of these
Which of the following characteristics is not-shown by hydrogen? 1 It burns in air to form water 2 It supports combustion 3 It combines with almost all the metals forming hydrides 4 None of these
The ore of which of the following metals can be concentrated by hydraulic washing? 1 Tin 2 Sodium 3 Iron 4 Manganese
In vulcanization, natural rubber is heated with 1 Carbon 2 Sulphur 3 Silicon 4 Phosphorus
Which is the largest refractor telescope?
abbrivation for ROA in oracle?
how is rrb model question paper for science junior engineer gr.II
Which of the following is used as a filler in rubber tyres? 1 Graphite 2 Coal 3 Coke 4 Corbon black
what would be the fate of life on earth 10 yrs down the lane.
If today is Saturday what day will it be from 500 days?
Which metal is used for Galvanisation of iron?
13 Answers ncert, TCS, TNPSC Tamil Nadu Public Service Commission,
Name the indian states in which river ganga flows?
19 Answers College School Exams Tests, Intel, Yes Bank,
Rubber is coagulated from latex by adding 1 Hydrochloric acid 2 Acetic acid 3 Sulphuric acid 4 Carbonic acid