sustainable management of natrual resources — Science STD 10 — Question

________ animal can change sex.
(Lizard, Snail, Frog)

At night stars are seen slightly at a higher position than their actual position because of the ______________ (Atmospheric refraction, Reflection, Refraction in water)

Pepsin is an enzyme that can act only in ….. medium. (basic, acidic, phenolic)

Litmus is a __________ indicator.(Natural, Synthetic, Olfactory)

Burning of coal and formation of water is _________ type of reaction.(Combination, Decomposition, Displacement)

For a light ray passing through the prism, the angle between the incident ray and the emergent ray is known as the ______________ (Angle of deviation, Angle of incidence, Angle of reflection)

Use of ...... mirror would be best for in solar cooker. (convex, plane, concave)

All animals are ……….. in food chain. (producer, consumers, decomposer)