Which among the following statements are TRUE regarding synthetic fibre?
I. They melt after catching fire.
II. They are more durable.
III. They are prepared by a number of processes using petrochemicals.
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Organs having different structure and components but perform similar functions are called ______.
Which group in the modern periodic table contains elements that are inert gases?
The process of transferring of charge from a charged object to the earth is called ______________.
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What is the position of metallic ion and non-metallic ion in a chemical formula?
Nuclear sizes are expressed in a unit named
Nuclear sizes are expressed in a unit called "Fermi" which is a unit of length equal to 10−15 metre (one femtometre), used in nuclear physics. It is similar to the diameter of a proton.
Patanjali is well known for the compilation of