Directions: In the following chemistry general knowledge questions, four answers are given, and only one answer is correct. Read the questions and choose the correct answers. If you want to check the answer, click on the answer button and know the correct answer with an explanation.
1. What is the chemical name of baking soda?
Answer: (c) Sodium bicarbonate
Solution: The chemical name of baking soda is Sodium bicarbonate (NaHCO3). It is also known as the bicarbonate of soda.
2. What is the use of an atomic pile?
For X-rays experiments
For proton reactions
For nuclear fission reactions
For Electron experiments
Answer: (c) For nuclear fission reactions
Solution: The atomic pile is a nuclear reactor that uses a controlled nuclear fission chain reaction to generate energy.
3. Which radioactive element is used in heart pacemakers?
Answer: (b) Plutonium
Solution: Pacemakers are used to stimulate a regular heartbeat when the body's natural electrical pacing system is not transmitting properly. Plutonium is used for pacemakers as a power source.
4. Which among the following is a carbohydrate?
Answer: (a) Cane-sugar
Solution: Cane sugar is a carbohydrate and composed of carbon, hydrogen and oxygen. It is a source of extracting sugar. Simple sugars are called monosaccharides which includes glucose, fructose and galactose.
5. Bronze is an alloy of______.
Tin and Zinc
Copper and Iron
Copper and Silver
Copper and Tin
Answer: (d) Copper and Tin
Solution: Bronze is a metal alloy consisting primarily of copper, usually with 12–12.5% tin as the main additive and often with the addition of other metals such as aluminium, manganese, nickel or zinc.