MODEL PAPER - 10 [2026] — Science STD 10 — Question

Give the pair of contrasting traits of the following characters in pea plant and mention which is dominant and recessive.

1. Yellow seed.
2. Round seed.

What kind of mirror, concave, convex or plane, would be best suited for use in a solar cooker? Why?

State the various characteristics of chemical reactions.

What type of respiration takes place in human muscles during vigorous physical exercise? Give reason for your answer.

What is the difference between the food habits of organisms belonging to the first and the third trophic levels? Give one example each of the organisms belonging to these two trophic levels.

Which type of synthetic detergents are biodegradable?

What is the function of our nervous system?

When a light ray passes from air into glass, what happens to its speed? Draw a diagram to show which way the ray of light bends.

You have been provided with three test-tubes. One of these test-tubes contains distilled water and the other two contain an acidic and a basic solution respectively. If you are given only blue litmus paper, how will you identify the contents of each test-tube?

At what potential and frequency are the domestic electric circuits operated?