P-2 Animal Classification — Science STD 10 — Question

Identify the correlation between the first two words and suggest the suitable words: Amoeba : Fission : : Hydra : ………….

Name a gas used in photosynthesis.

Arrange the following fuels in the order of decreasing calorific values (keeping the fuel with highest calorific value first): Biogas, Kerosene, Wood, Petrol, Hydrogen gas, Methane

Condensation of chromosomes : Prophase :: Formation of spindle fibres : …………

Write balanced chemical equation from the following information:
An aqueous calcium hydroxide solution (lime water) reacts with carbon dioxide gas to produce a solid calcium carbonate precipitate and water.

A ray of light is incident on a plane mirror at an angle of 30°. What is the angle of reflection?

Explain why, filament type electric bulbs are not power efficient.

What type of lens is used to correct:

1. Hypermetropia?
2. Myopia?

State the property of the metals due to which they can be drawn into wires.

For what position of an object, a concave mirror forms a real image equal in size to the object?