Which of the following is the most stable element?
1 Uranium
2 Hydrogen
3 Oxygen
4 Lead
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The Indian variety of which of the following plant has been proved to be the greatest pollution fighter in India: 1) Tea 2) Jute 3) Mustard 4) Groundnut
The location and energy of an electron in an atom can be specified by 1 Atomic mass 2 Atomic number 3 Quantum numbers 4 None of these
Which of the following is used to coagulate synthetic fibers from solution? 1 Hydrochloric acid 2 Sulphuric acid 3 Nitric acid 4 None of these
Soap is a mixture of sodium or potassium salts of 1 Monocarboxylic acids 2 Glycerol’s 3 Dicarboxylic acids 4 Tricarboxylic acids
Two or more forms of a chemical element having different physical properties but rising to identical chemical compounds are called 1 Allotropes 2 Isotopes 3 Isomers 4 Isotones
What is the Genetics?
The dark lines in the solar spectrum are due to 1 Absorption of corresponding wavelengths by the prism used in he spectrograph 2 Destructive interference between waves of certain definite wavelengths 3 Absorption of corresponding wavelengths by the outer layers of the sun 4 None of these
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
Quartz crystals normally used in quartz clocks etc. is chemically 1 Sodium silicate 2 Germanium oxide 3 Silicon dioxide 4 None of these
Permanent hardness of water may be removed by the addition of 1 Alum 2 Sodium carbonate 3 Lime 4 Potassium permanganate
who design the intelligent designer of the so called Intellegent design???
the basic approach to science was established by: