The chemical used as a ‘fixer’ in photography is
1 Borax
2 Sodium thiosulphate
3 Sodium sulphate
4 Ammonium persulphate
is there any device to convert to mechanical energy into electrical energy
Study of life in outer space is called A) Endobiology B) Exobiology C) Entrobiology D) Neobiology
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
Who is the second female cosmonaut?
Which of the following is the most stable element? 1 Uranium 2 Hydrogen 3 Oxygen 4 Lead
On what basis Friability limit NMT 1.0%w/w is recommended. what is impact on formulation if this limit exceeds.
Long distance photography is facilitated by 1 Visible light 2 X-rays 3 Infrared rays 4 Ultraviolet rays
the colour of a star is an indication of its?
The ratio of pure gold in 18 carat gold is 1 60% 2 75% 3 80% 4 100%
3 Answers DSSSB-Delhi Subordinate Service Selection Board,
meron po bang minerals ang astoroids po ba?
The pink color of Bayer’s reagent is discharged when acetylene is passed through it. This is due to the formation of 1 Acetic acid 2 Ethylene 3 Water 4 Oxalic acid
Why is ice wrapped in gunny sacks to prevent it from melting