miscellaneous

Solar panel converts mechanical energy into solar energy

• true

• false

The positive electrode in a simple cell is

• zinc plate

• carbon plate

• copper plate

• both 1st and 2nd

1. The electrolyte in a dry cell is

• ammonium chloride plate

• dilute sulphuric acid

• copper plate

• ammonium chloride paste

4.5 g into kilogram

• 0.45 kilogram

• 45 kilogram

• 0.045 kilogram

• 0.0045 kilogram

58 years into decades

• 5.08 decades

• 580 decades

• 5.8 decades

• 0.58 decades

The mass of a moving bus is 4 kg and its velocity is 20 m/s. What is its kinetic energy?

• 800 J

• 8100 J

• 8000 J

• 0.008 J

Hydroelectricity converts mechanical energy into electrical energy

• true

• false

The components of blood can be separated by

(a)  

The components of colours in ink is separated by

• chromatography

• centrifugation

• distillation

• sedimentation and decantation

(a)   is the process in which evaporation and condensation goes on side by side.