Cuscuta and vanda are growing oh a mango tree. Which plant makes harm to the mango tree. Justify your answer

a) Which one has greater size, Na or K? b) Justify your answer.

Which is bigger unit J or eV? Justify for your answer.

Complete the table given below and answer the following questions (symbol used are not true) Which element in the table is the most stable one? Justify your answer. .

Analyse the merits and demerits of the following lamps and find out which is the best in the group . Justify your answers. Filament lamp

Analyse the merits and demerits of the following lamps and find out which is the best in the group . Justify your answers. Fluorescent lamp

Analyse the merits and demerits of the following lamps and find out which is the best in the group . Justify your answers. Arc lamp

Analyse the merits and demerits of the following lamps and find out which is the best in the group . Justify your answers. CFL

Analyse the merits and demerits of the following lamps and find out which is the best in the group . Justify your answers. LED Bulb