The highest grade of coal whose surface is shining and has the highest calorific value, is 1 Bituminous 2 Lignite 3 Anthracite 4 Peat1 8679
The average salinity of sea water is 1 2% 2 2.5% 3 3% 4 3.5%1 2415
Which of the following is the most stable element? 1 Uranium 2 Hydrogen 3 Oxygen 4 Lead
Find the odd one: 1 Marble 2 Chalk 3 Limestone 4 Slaked lime2 10247
Diamond is harder than graphite because of 1 Difference of layers of atoms 2 Tetrahedral structure of diamond 3 Difference of crystalline structures 4 None of these3 13261
A super conductor is characterized by 1 Zero permeability 2 Low permeability 3 High permeability 4 Infinite permeability1 8958
Of the various forms of carbon, the one which is used for adsorption purpose, is 1 Diamond 2 Graphite 3 Coke 4 Wood charcoal1 2429
The chemical (ethyl merceptan) added to the otherwise odorless LPG cooking gas for imparting a detectable smell to the gas is a compound of 1 Sulphur 2 Fluorine 3 Chlorine 4 Bromine2 7717
An element that does not occur in nature but can be produced artificially is 1 Thorium 2 Radium 3 Plutonium 4 Uranium4 17975
The inert gas which is substituted for nitrogen in the air, used by deep sea divers for breathing, is 1 Helium 2 Argon 3 Krypton 4 Xenon3 14660
The group of metals Fe, Co, Ni may be best called as 1 Alkali metals 2 Rare metals 3 Main group metals 4 Transition metals2 7323
Heavy water is 1 Sea water (H2O+Salt) 2 D2O 3 H2O2 4 None of these3 4891
Amalgams are 1 Alloys which contain carbon 2 Alloys which have great resistance to abrasion 3 Alloys which contain mercury as one of the contents 4 None of these2 2319
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 these1 2576
Which is the most famous comet?
how longs & what conditions will a matter, say for example U, after an atomic explosion and was converted completely into energy will again condensed back into a matter named U'
whate is the difference b/w aflatoxions&ocharatoxions
I am a student of class 12. PCMB group. I am not getting admission in any of the medical colleges. And I am not good at math. So what are the options available for me????
On what basis Friability limit NMT 1.0%w/w is recommended. what is impact on formulation if this limit exceeds.
What is practical frequency. ? How create a frequency band?
Why the diesel generator suddenly increases the output voltage and avr get shorted ... And also increases the load the generator decreases the voltage why ..and also the output power in amps generated in 30 kv diesel generator ..
What is one light year?
first aid to person affected with electrical shock
Who is the chairman od atomic energy commission of india?
Which is india’s largest nuclear research reactor?
Who is the second female cosmonaut?
What is super nova?
Explain any four values that can be developed through teaching Physical Science
exactly how does an RTD 3 wire or 4 wire device cancel out the resistance of the wires , opposed to a 2 wire RTD? Is it because you have resistors in parallel , or because something to do with the electronic circuit the RTD is connected to ?