Electricity — Science STD 10 — Question

What is the name of those cells in the leaf of a plant which control the opening and closing of stomata?

What happens when a mature spirogyra filament attains considerable length?

Name two metals which are highly resistant to corrosion.

Write complete balanced equations for the following reactions:
Calcium (solid) + Water (liquid) → Calcium hydroxide (solution) + Hydrogen (gas)

Is it an example of monohybrid cross or dihybrid cross?

What name is given to the heat energy obtained from hot rocks inside the earth?

Give the usual name for the following:
A point inside a lens through which the light passes undeviated.

What will be the colour of litmus in an aqueous solution of ammonium chloride salt?

What is voluntary action?

What does the divergence of magnetic filed lines near the ends of a current carryimg straight solenoid indicate?