Work and Energy — Science STD 9 — Question

Acceleration is calculated from v - t graph while __________ is area under v - t graph. (Distance, Displacement, Speed)

Growing wheat and groundnut on the same field is called __________. (Crop Rotation, Mixed Cropping, Monoculture)

In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the __________ by the body. (Distance travelled, Speed, Velocity)

Neon and chlorine have atomic numbers 10 and 17, respectively. Their valencies will be 0 and _________ respectively. (0, 1, 2)

The electricity meter installed in our home measures electric energy in the units of _____.

A heterogeneous mixture of liquid and solid is separated by ________. (Centrifugation, Filtration, Sublimation)

The separation of liquids by fractional distillation is based o the difference in their __________.

Fill in the following blanks with suitable words:
In a speed-time graph, the area enclosed by the speed-time curve and the time axis gives the _____ by the body.