Heredity and Evolution — Science STD 10 — Question

If fuses of 250mA, 500mA, 1A, 5A and 10A were available, which one would be the most suitable for protecting an amplifier rated at 240V, 180W?

Find the odd one out: Tube feet, Setae, Parapodia, Sucker

Write the balanced equations for the following reactions, and add the state symbols:
Magnesium carbonate reacts with hydrochloric acid to produce magnesium chloride, carbon dioxide and water.

Name two anti-oxidants which are usually added to fat and oil containing foods to prevent rancidity.

If oxidation means losing electrons, what is meant by reduction.

Convey the following information in the form of a balanced chemical equation:
“An aqueous solution of ferrous sulphate reacts with an aqueous solution of sodium hydroxide to form a precipitate of ferrous hydroxide and sodium sulphate remains in solution.”

What do you mean by latent heat of fusion?

An element has its electron configuration as 2, 8, 2. Now answer the following question.
What is the atomic number of this element?

Find the odd one out: Star fish, Sea-urchin, Nereis, Sea-cucumber

During the electrolysis of a saturated solution of sodium chloride, where is:
Hhydrogen formed?