What is the Ecology ?
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It deals with the study of organism in relation to their
surroundings.
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Brass 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
Which of the following minerals has the lower numerical hardness value? 1 Talc 2 Gypsum 3 Apatite 4 Topaz
In laundry soaps, a material called ‘filler’ is used. Which of the following is a ‘filler? 1 Talc 2 Sodium silicate 3 Soda ash 4 Sodium phosphate
WHATE COLOUR OF STAR;SIZE;
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
Atoms of an element differ from those of all other elements in 1 Atomic number and electronic configuration 2 Atomic number and number of valence electrons 3 Number of neutrons and electronic configuration 4 None of these
Who was the first cosmonaut?
cause for earth-to-neutral voltage
Isotopes are separated by 1 Filtration 2 Sublimation 3 Distillation 4 Crystallization
10 Answers Bank Exams, dpdc, MPSC, NIFT, State Bank Of India SBI,
Which is the most famous comet?
An atom of an element with mass number 23 and atomic number 11 will have 1 11 neutrons, 12 protons and 11 electrons 2 11 protons, 12 neutrons and 11 electrons 3 11 neutrons, 11 protons and 12 electrons 4 23 protons and 11 electrons
Emerald is ----in colour 1 Violet 2 Yellow 3 Deep green 4 Prussian blue
Biological Sciences 
