Basic EDS MCQs (Set 5)
Everyday Science MCQs are part of different competitive exams including PPSC Tests, FPSC Tests and PMS GK Paper. You need to prepare Basic EDS MCQs in order to get success in different competitive exams. Here is the Set 5 of most important Basic EDS MCQs.
1. Radioactivity was discovered by _______________.
A. Henri Becquerel
Explanation:
In 1896 Henri Becquerel was using naturally fluorescent minerals to study the properties of x-rays, which had been discovered in 1895 by Wilhelm Roentgen. He exposed potassium uranyl sulfate to sunlight and then placed it on photographic plates wrapped in black paper, believing that the uranium absorbed the sun’s energy and then emitted it as x-rays. This hypothesis was disproved on the 26th-27th of February, when his experiment “failed” because it was overcast in Paris. For some reason, Becquerel decided to develop his photographic plates anyway. To his surprise, the images were strong and clear, proving that the uranium emitted radiation without an external source of energy such as the sun. Becquerel had discovered radioactivity.
2. Which gas is used in the preparation of soft drinks?
B. Carbon Dioxide
Explanation:
The fizz that bubbles up when you open a bottle of soda is carbon dioxide gas (CO2). Soft drink manufacturers add fizz by dissolving carbon dioxide into the water at high pressures.
3. The three elements needed for healthy growth of plants are ___________.
D. N,P,K
Explanation:
Soil is a major source of nutrients needed by plants for growth. The three main nutrients are Nitrogen (N), Phosphorus (P) and Potassium (K). Together they make up the trio known as NPK.
4. Light year is a unit of ______________.
B. Distance
Explanation:
A light-year is a measurement of distance and not time (as the name might imply). A light-year is the distance a beam of light travels in a single Earth year, which equates to approximately 6 trillion miles (9.7 trillion kilometers).
5. Rickets is a disease of the ______________.
A. Bones
Explanation:
Rickets is a bone disease that affects infants and young children. The child’s growing bones fail to develop properly due to a lack of vitamin D. This can result in soft and weakened bones, fractures, bone and muscle pain, and bony deformities.
