periodic classification of elements — Science STD 10 — Question

What is meant by reversible reaction?

Define the terms : Food web

Which defect of the eye occurs due to distortion of cornea?

What is the name of instrument to measure electric current?

why is re-use is considered better then recycling?

What happens to the pupil of the eye when the light is A. very bright and B. very dim?

Write the Ohm's law in the form of a formula.

Define:
Neutralisation reaction

Following events in flowering plants given below:
(a) Pollen tube develops in style
(b) Plumule develops as shoot system
(c) Ovule modified in seed
(d) Anther releases pollen and stigma receives it.
Arrange them in correct sequence.

Which fuel is considered as a cleaner source for vehicles?