Everyday Science MCQ — 216 Practice Questions with Answers

Explanation

An electric motor converts electrical energy into mechanical energy. This is the energy conversion used in devices that take electrical input and produce motion. Therefore option C is correct.

Explanation

Electromagnetic induction is the production of induced emf or current when the magnetic flux linked with a conductor or coil changes. Faraday's experiments show that relative motion or changing magnetic flux can induce current in another coil. Therefore option D is correct.

Explanation

Lithium is an alkali metal, and alkali metals are soft enough to be cut with a knife. Among the given options, lithium is the metal that can be cut easily with a knife. Therefore A is correct.

Explanation

Anemia is a condition in which the number of red blood cells, or the hemoglobin concentration in them, is below normal. Therefore a deficiency of red blood cells in the body is called anemia. C is the correct option.

Explanation

Lead sulphate has the chemical formula PbSO4. Among the given formulae, only option C matches this formula. Therefore C is correct.