Science Test No. 1

Science I Test. I. Give scientific Reasons. 1. 2. 3. 4. 5.

α – particles show less deflection as compared to β – particles. Radioactive transformation does not take place when an atom emits γ – rays. X – rays can penetrate through skin but not through bones. X – rays are used to detect fracture of bones. X – rays are used to detect smuggled of gold or silver.

II. Answer briefly. 1. Many appliances in daily use are based on inter – changeability of different forms of energy explain. 2. Classify the following examples into potential energy and Kinetic energy. 1. A book kept on a table. 2. A compressed spring 3. Running water 4. A rotating top.

Science I Test. I. Give scientific Reasons. 1. 2. 3. 4. 5.

γ – radiations are not deflected by electric or magnetic field. X – rays are invisible. Exposure of X – rays for a long time should be avoided. X - rays are used in industries. It is difficult to achieve controlled fusion reaction in the laboratory.

II. Answer briefly. 1. State the types of solution and give one example of each. 2. Causes of Noise pollution.