Define electron volt.

While rotating an object or while openning a door or a water tap we apply a force or forces. Under which conditions is this process easy for us? Why? Define the vector quantity concerned. How does it differ for a single force and for two opposite forces with different lines of action?

How are fungi different from plants?

Give reason nert gases have positive value of electron gain enthalpy

Identify the element with more negative value of electron gain enthalpy from the following pairs. Justify. Cl and Br

Identify the element with more negative value of electron gain enthalpy from the following pairs. Justify. F and O

The attractive force which exists due to the mutual sharing of electrons between the two atoms of similar electronegativity or having small difference in electronegativities is called a __________.

Answer the following : Describe a clinical thermometer . How does it differ from the thermometer used in laboratory ?

Explain properties of group 16 elements with respect to Electron gain enthalpy

Define aneuploidy. How is it different from polyploidy? Describe the individuals having following chromosomal abnormalities. Trisomy of 21st Chromosome