Quartz crystals normally used in quartz clocks etc. is
chemically
1 Sodium silicate
2 Germanium oxide
3 Silicon dioxide
4 None of these
what is office automation?
Which type of fire extinguisher is used for petroleum fire? 1 Foam type 2 Soda acid type 3 Powder type 4 None of these
there are 3 sources of resistance in a parallel circuit's. 2 of them are rated at 20 ohms, the other at 10 ohms. what is the circuit's total resistance?
who is the father of sex?
Which of the following alloys is used for making magnets? 1 Duralumin 2 Stainless steel 3 Alnico 4 Magnalium
When was the second and third experimental explosion conducted?
Heavy water is 1 Sea water (H2O+Salt) 2 D2O 3 H2O2 4 None of these
The human skull rests on which bone? a)Manubrium b)Atlas c)Mandible d)Sternum
cause for earth-to-neutral voltage
A super conductor is characterized by 1 Zero permeability 2 Low permeability 3 High permeability 4 Infinite permeability
Rusting of iron involves 1 Oxidation 2 Reduction 3 Displacement 4 Decomposition
Which of the following fertilizers leaves acidic residue? 1 Urea 2 Ammonium phosphate 3 Ammonium sulphate 4 None of these