Using an applied force of a Newton across one meter is known
as a:
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which element most resembles silicom for chemical bonding
ability?
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Which unit is used to measure sound frequency?
Permanent hardness of water may be removed by the addition of 1 Alum 2 Sodium carbonate 3 Lime 4 Potassium permanganate
Caustic soda is 1 NaC1 2 Na2CO3 3 NaOH 4 NaHCO3
The isotope of uranium capable of sustaining chain reactions is 1 U-235 2 U-238 3 U-239 4 None of these
Write two characteristics of Science.
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Which gas is used in cold store ?
Science is both a process and product-Substantiate
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what are the advantages and disadvantages of rational knowledge?
What is used in arihant’s atomic reactor?
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
Rubber is coagulated from latex by adding 1 Hydrochloric acid 2 Acetic acid 3 Sulphuric acid 4 Carbonic acid
Which radioactive pollutant has recently drawn the attention of the public, due to its occurrence in the building material? 1 Radium 2 Radon 3 Thorium 4 Plutonium