Question : What type of energy conversion takes place in a battery?

Option 1: Chemical energy into light energy

Option 2: Chemical energy into electrical energy

Option 3: Mechanical energy into chemical energy

Option 4: Chemical energy into sound energy

Question : dynamo is a device for converting 

Option 1: heat energy into electrical energy

Option 2: mechanical energy into electrical energy

Option 3: megnetic energy into electrical energy

Option 4: chemical energy into electrical energy

Question : A ______ is used to detect acoustic signals under the water.

Option 1: ammeter

Option 2: hydrophone

Option 3: pyrometer

Option 4: bolometer

Question : Which of the following is known as the graveyard of Red Blood Corpuscles (RBC)?

Option 1: Liver

Option 2: Spleen

Option 3: Brain

Option 4: Heart

Question : In terms of their magnetic properties, the elements named nickel and cobalt are classified as:

Option 1: paramagnetic

Option 2: anti-ferromagnetic

Option 3: ferromagnetic

Option 4: diamagnetic