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Which of the following elements is obtained from sea weeds? 1 Argon 2 Sulpur 3 Vanadium 4 Iodine
1 6478The 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
1 10125The property of a substance to absorb moisture from the air on exposure is called 1 Osmosis 2 Dessication 3 Efflorescence 4 Deliquescence
3 17923Which gas is used for preparation of soda water? 1 Ammonia 2 carbon dioxide 3 Hydrogen 4 Nitric oxide
7 24670Which of the following minerals has the lower numerical hardness value? 1 Talc 2 Gypsum 3 Apatite 4 Topaz
3 8505Brass gets discolored in air because of the presence of which of the following gases in air? 1 Carbon dioxide 2 Oxygen 3 Hydrogen sulphide 4 Nitrogen
2 17526Quartz crystals normally used in quartz clocks etc. is chemically 1 Sodium silicate 2 Germanium oxide 3 Silicon dioxide 4 None of these
1 12163Bell metal is an alloy of 1 Brass an nickel 2 Zinc and copper 3 Tin and copper 4 None of these
1 9625The high-temperature superconductors are 1 Metal alloys 2 Ceramic oxides 3 Inorganic polymers 4 Pure rare earth metals
1 3783Which of the following are the ingredients of gun metal? 1 Iron, Tin 2 Copper, Tin 3 Iron, Brass, Tin 4 Iron, Zinc, Titanium
2 12239The variety of coal in which the deposit contains recognizable traces of the orginal plant material is 1 Anthracite 2 Lignite 3 Peat 4 Bitumen
1 8123The gas that usually causes explosions in coal mines is 1 Hydrogen 2 Carbon monoxide 3 Air 4 Methane
8 14865In fireworks, the green flame is produced because of 1 Mercury 2 Sodium 3 Potassium 4 Barium
1 12725The element required for solar energy conversion is 1 Germanium 2 Silicon 3 Uranium 4 None of these
2 20530Which of the following was to be discovered first in the chromo sphere of the sun? 1 Xenon 2 Helium 3 Neon 4 Krypton
1 3706Post New General Science Questions
Which country has no sunrise?
When and where was the tata institute of fundamental research founded?
What are the important factors of cosmic rays?
hai i am koti reddy panta.studying 3rd mca.i failed in my degree. shell i consider those subjects as backlogs
what are advantages of excess populatoin?
how is rrb model question paper for science junior engineer gr.II
Explain the role of Science for sustainable Development
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????
a private address 172.116.0.0 will borrow ? bits from the HOST to give one 120 subnets - range = ?
The Purest form of water can be obtained from:- I) a deep tube well II) a running stream III) a hot water spring IV) a heavy shower of rain
Explain how you can integrate Life skills in Science Teaching
what would be the fate of life on earth 10 yrs down the lane.
Which is the largest refractor telescope?
Where is the biggest solar telescope in india situated?
What is one light minute?
