Q. Every substance in our world is made up of

View solution

Q. By chemical means, chemical elements cannot be broken down into

View solution

Q. Elements which are found on their own as free elements are

View solution

Q. 1.67x10⁻²⁷ kg is the weight of a single atom of

View solution

Q. The most composition of sun is mainly

View solution

Q. Chemical elements contains only

View solution

Q. Losing a small molecule from the original organic molecule is

View solution

Q. During the elimination reaction of Halogenoalkanes, the reagent used is

View solution

Q. If ethanol will be used in the elimination reaction of Halogenoalkanes it will produce

View solution

Q. The enthalpy change of vaporization is lowest for

View solution

Q. Metals are good conductors due to

View solution

Q. What is true about metal atoms?

View solution

Q. The attractive forces between metal ions and delocalized electrons can be made weaker only at

View solution

Q. Covalent solids are

View solution

Q. Metals lose electrons from their lattice to become

View solution

Q. Neither ions nor electrons are free to move in

View solution

Q. The attractive forces between metal ions and delocalized electrons can be weakened or overcome by

View solution

Q. The conduction of electricity in metallic bonding is due to presence of

View solution

Q. The strength of metallic bonding also increases with the increase in

View solution

Q. The electrons which are not associated with a single type of atom are termed as

View solution