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A rectifier is an electronic device used to convert

During sleep a mans blood pressure

In Which among the given substances all carbon atoms are quaternary in nature

The gas predominantly responsible for global warming is

The yellow colour of human urine is due to a pigment called?

Which among the given is biodegradable -

Which of the following phenomenon helps to conclude that light is a transverse wave?

A ripe Tomato is Red, Leaves are Green, Flower is Purple, Hair is Black. Bring out the pigments responsible for these colors respectively ?

During the day time plants

In which among the given will you look for E. Coli?

Which among the given is colourless

Which of the following places are main centers of silicosis and silico-tuberculosis diseases affecting the workers in India?

A rubber ball is dropped from a height of 2 metres. To what height will it rise if there is no loss of energy/velocity after rebounding -

Dynamo is

In which decade was the SPICE simulator introduced?

Pollutant from motor car exhaust that causes mental disease is

The gas that is used in the manufacture of vanaspati ghee is:

Therm is the unit of -

Which among the given is not a chemical action?

Which of the following process are associated with plants during dark period ?

A second pendulum is a pendulum whose time period is

Earth is a-

In which decade was the telephone invented?

The gas used for artificial fruit ripening of green fruit is -

This group of alumino-silicate minerals is widely used in making electrical insulators