Question : Oil raises the wick in a lamp because

Option 1: Oil is very light.

Option 2: Of the diffusion of oil through wick

Option 3: Of the surface tension phenomenon

Option 4: Of the capillary action phenomenon

Question : In the grasslands, trees do not replace the grasses as a part of an ecological succession because of:

Option 1: Limited sun light and paucity of nutrients

Option 2: None of options

Option 3: Insect and fungi

Option 4: Water limits and fire

Question : When metal is heated in a flame , the electrons absorb energy and jump to higher energy state. On coming back to lower energy state hey emit light which we can observe in

Option 1: Raman spectra

Option 2: Absorbtion spectra

Option 3: Emission spectra

Option 4: Fluorescence

Question : Before the rise of the modern industrial system, Indian exports consisted chiefly of manufactures like________.

Option 1: electricals

Option 2: chemicals

Option 3: light machinery

Option 4: cotton and silk fabrics

Question : Select the most appropriate option to fill in the blank.

The Magic Fountain is renowned for ______ spectacular light and music shows.

Option 1: its

Option 2: their

Option 3: his

Option 4: it’s